All language subtitles for S05E01 - Paving Asphalt; Marshmallow Cookies; Loudspeakers; Electronic Door Locks (576p AMZN WEB-DL x265 Garshasp)_track4_[eng]
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>> narrator: today on
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"How it's made"...
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Paving asphalt...
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Marshmallow cookies...
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Loudspeakers...
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And electronic door locks.
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Asphalt is a black, liquid
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Substance that's a by-product of
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Processing crude petroleum.
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Asphalt is a key component of
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Waterproofing and insulation
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Materials and roofing shingles.
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But its best-known use is for
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Paving roads.
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Asphalt cement is a by-product
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Of crude oil -- the key
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Ingredient they mix with crushed
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Rocks and other minerals to make
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Paving asphalt.
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So, production begins at the
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Paving plant's quarry, where
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Some 50 feet below ground,
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Workers driving heavy machinery
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Collect boulders of granite that
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Have been blasted off the rock
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Walls.
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Trucks transport the rocks to
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The paving plant, which is right
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On the quarry site.
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They dump their cargo into the
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Primary crusher -- a machine
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Whose steel jaws crush these big
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Rocks into pieces smaller than
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8 inches.
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It takes mammoth force to crush
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Solid rock.
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The fly wheels that amplify the
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Motor's energy weigh more than
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6 tons.
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The primary crusher empties onto
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A mobile conveyor belt, which
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Transports the crushed rocks
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To an outdoor storage area.
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When it's time to make the
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Asphalt, the rocks travel, via
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Conveyer belt, from the storage
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Area to a screening building to
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Be classified by size.
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There, the rocks tumble
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Downward over a series of
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Inclined screens whose largest
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Holes are 4 inches wide.
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What's too large to drop through
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Goes to a secondary crusher,
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That reduces the rocks to
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4 inches or smaller, then sends
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Them to a third, or tertiary,
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Crusher that further reduces
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Them to 1 inch or smaller.
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What's small enough to pass
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Through the screens bypasses the
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Secondary crusher and goes
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Directly to the tertiary
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Crusher.
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After this last crushing stage,
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The largest stones are 1 inch
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In size.
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Everything smaller than 1/4 inch
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Goes in one pile -- that
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Includes stone dust created by
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The crushing process.
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Stones that are 1/2 to 3/4 of an
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Inch go into another pile...
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Stones 1/4 to 1/2 inch into
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Another.
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Trucks transfer material from
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Each pile to separate
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Compartments called feed bins.
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Exactly what goes into the
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Paving asphalt depends on what's
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Being paved.
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But, generally, these are the
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Four ingredients...
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Sand...
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Stone dust...
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1/4- to 1/2-inch stone...
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And 1/2 to 3/4 of an inch stone.
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The ingredient proportions vary
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According to what the paving
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Asphalt will be used for.
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Stones, along with sand and
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Stone dust as fillers, usually
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Make up about 95% of the mix.
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The remainder, added later, will
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Be liquid asphalt cement.
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Each bin releases a specific
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Amount of material onto a
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Conveyor belt running under it.
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The belts lead to a main
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Collecting belt that dumps
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The ingredients, combined,
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Onto yet another belt that leads
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To a drier.
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The drying process, which takes
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About a minute, removes all
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Traces of humidity.
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This will enable the materials
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To bond better with the asphalt
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Cement.
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Screening equipment then
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Reseparates the dried
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Ingredients, making it possible
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To precisely weigh out the
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Required amount of each one.
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Everything then goes into a
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Mixer.
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As this demonstration shows, the
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Mixer blends everything
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Thoroughly.
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Then it's time to pump in hot
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Asphalt cement.
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Oil refineries make asphalt
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Cement from what's left over
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After they've processed crude
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Oil.
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The paving mix contains about 5%
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Asphalt cement.
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This is what happens inside the
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Mixer.
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The hot asphalt cement binds the
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Ingredients in about 30 seconds.
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The result is ready-to-lay
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Paving asphalt.
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The mixer empties directly into
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Trucks destined for the paving
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Site.
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There, a paving machine will
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Spread the hot asphalt on the
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Road bed.
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Then a compactor roller will
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Pack it down.
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The asphalt cools and hardens in
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About one hour, depending on the
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Weather.
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>> narrator: the next time you
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Bite into a marshmallow cookie,
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You can thank the ancient
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Egyptians.
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They invented marshmallow
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Candy by thickening honey with
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Sap from the root of the
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Marshmallow plant -- a herb that
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Grows in salt marshes and along
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Large bodies of water.
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Modern marshmallow contains
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Gelatin instead of sap from the
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Mallow root.
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The snap test -- to make sure
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The coating is hard and thick
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Enough.
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Then, the taste test.
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If you've got a sweet tooth,
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Doing quality control in the
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Marshmallow cookie factory is
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Your dream job.
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To make a batch of dough for the
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Cookie base, they mix wheat
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Flour, salt, baking soda and
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Powder, cornstarch, whey powder,
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And potassium sorbate.
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Then they add several liquid
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Ingredients.
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This one causes a chemical
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Reaction, making the biscuit
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Lighter.
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This cream-colored liquid is
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Vegetable oil shortening.
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This transparent liquid is
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Glucose fructose, a sweetener.
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The ingredient proportions are
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Also a company secret.
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From the mixer, the dough goes
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Into a machine called the
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Chipper.
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It shreds the big blob into
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Pieces about the size of the cap
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On a highlighter pen.
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This makes the dough more
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Manageable for the next machine,
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Called a rotary mold.
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Inside that machine, a large
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Roller flattens the dough
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Pieces, forming them into a
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Dense sheet about 1/2 inch
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Thick.
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It then presses the sheet
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Against another roller whose
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Surface is a cookie mold.
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The factory uses the rotary mold
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Machine for many different types
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Of cookies.
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It simply installs the
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Appropriate roller for the
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Cookie in production.
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For marshmallow cookie bases,
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The mold cavities are round.
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The bases exit the rotary mold
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And make their way onto a moving
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Baking sheet.
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That transports them to an oven.
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The baking time and temperature
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Are, once again, top secret.
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The baked cookie bases exit the
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Oven and move onto a conveyer
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Belt that transports them to a
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Cooling area.
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Once they cool to room
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Temperature, the bases go into a
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Machine called the base feeder.
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It lines them up like marching
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Soldiers to receive their
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Marshmallow filling and
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Chocolate coating.
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The process does require
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Military precision.
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Factory technicians have to
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Adjust this machine daily to
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Ensure accuracy to 1/32 of an
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Inch.
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A portion of filling has to land
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Perfectly centered on each base,
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Finishing off in a curled peak,
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This brand's trademark.
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The company won't divulge how
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Much marshmallow filling goes
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Into each cookie, nor will it
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Reveal its marshmallow recipe.
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But marshmallow is usually made
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From either corn syrup or sugar
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And gelatin.
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And now for the final layer --
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The chocolate coating.
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Not only are the marshmallow and
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Base covered in hot, melted
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Chocolate, the base floats in
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It, which coats the underside,
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As well.
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Built-in air jets blow off the
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Excess.
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The chocolate hardens inside a
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Cooling tunnel.
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How long that takes in the
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Tunnel temperature are -- you
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Guessed it -- classified
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Information.
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As the cookies exit the cooling
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Tunnel, a quality-control worker
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Does spot-checks to ensure the
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Coating is thorough, hard
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Enough, and thick enough.
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On the packaging line, the
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Cookies go into plastic trays.
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To keep up to speed, the workers
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Have to grab four cookies in
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Each hand without breaking the
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Coating.
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The trays pass through a machine
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That wraps them in plastic film.
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This keeps the cookies fresh and
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Also prevents them from falling
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Out of the tray.
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Meanwhile, another machine
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Assembles the boxes -- first
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Folding and gluing one end shut.
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Once workers load the trays, the
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Machine glues the open end
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Closed, as well.
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Then with the go-ahead from
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Quality control, the box's next
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Stop is the cookie aisle of your
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Local supermarket.
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>> narrator: loudspeakers take
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An electrical signal and turn it
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Into sound.
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The key to it all is a magnetic
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Wire voice coil and a permanent
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Magnet that attract and repel
288
00:11:17,100 --> 00:11:18,067
Each other.
289
00:11:18,067 --> 00:11:19,833
As the coil moves back and
290
00:11:19,833 --> 00:11:21,733
Forth, it rapidly vibrates a
291
00:11:21,733 --> 00:11:22,733
Flexible cone.
292
00:11:22,733 --> 00:11:24,567
This vibrates the air in front
293
00:11:24,567 --> 00:11:26,400
Of the speaker, creating sound
294
00:11:26,400 --> 00:11:32,533
Waves.
295
00:11:32,533 --> 00:11:34,233
Loudspeakers contain at least
296
00:11:34,233 --> 00:11:36,067
Two magnet-and-cone assemblies
297
00:11:36,067 --> 00:11:37,100
Known as drivers.
298
00:11:37,100 --> 00:11:38,800
They're typically housed in a
299
00:11:38,800 --> 00:11:44,567
Box called a speaker enclosure.
300
00:11:44,567 --> 00:11:46,400
To build the internal magnetic
301
00:11:46,400 --> 00:11:48,333
Structure, the factory begins by
302
00:11:48,333 --> 00:11:50,267
Cutting two plates of iron, each
303
00:11:50,267 --> 00:11:52,100
About 1/2 inch thick.
304
00:11:52,100 --> 00:11:54,400
They go one at a time onto a
305
00:11:54,400 --> 00:11:54,967
Lathe.
306
00:11:54,967 --> 00:11:56,467
First, the machining tool
307
00:11:56,467 --> 00:11:58,067
Smoothes and evens out the
308
00:11:58,067 --> 00:11:59,700
Surfaces, getting rid of the
309
00:11:59,700 --> 00:12:02,067
Marks the saw made.
310
00:12:02,067 --> 00:12:03,767
Then it cuts out a small hole in
311
00:12:03,767 --> 00:12:05,300
The center of one plate and a
312
00:12:05,300 --> 00:12:07,067
Larger hole in the center of the
313
00:12:07,067 --> 00:12:09,267
Other.
314
00:12:09,267 --> 00:12:10,800
Next, they cut a smaller and
315
00:12:10,800 --> 00:12:12,267
Thicker round piece of iron
316
00:12:12,267 --> 00:12:13,733
Called the core.
317
00:12:13,733 --> 00:12:15,933
A reamer bores a large hole
318
00:12:15,933 --> 00:12:18,233
Through it.
319
00:12:18,233 --> 00:12:20,067
They apply superhigh-strength
320
00:12:20,067 --> 00:12:21,833
Epoxy glue to the core and to
321
00:12:21,833 --> 00:12:23,667
The back plate -- the plate with
322
00:12:23,667 --> 00:12:26,433
The smaller hole.
323
00:12:26,433 --> 00:12:28,100
They glue and screw the pieces
324
00:12:28,100 --> 00:12:29,833
Together because the bond has to
325
00:12:29,833 --> 00:12:31,433
Be strong enough to withstand
326
00:12:31,433 --> 00:12:33,900
Intense magnetic pull.
327
00:12:33,900 --> 00:12:35,633
They glue a foam filter in the
328
00:12:35,633 --> 00:12:37,267
Hole to ensure the vibrating
329
00:12:37,267 --> 00:12:38,933
Cone doesn't draw in dust and
330
00:12:38,933 --> 00:12:41,767
Cause internal damage.
331
00:12:41,767 --> 00:12:43,567
Now they spread the glue on the
332
00:12:43,567 --> 00:12:45,367
Narrow end of what's called the
333
00:12:45,367 --> 00:12:46,800
Metal basket, a die-cast
334
00:12:46,800 --> 00:12:48,500
Aluminum frame that will hold
335
00:12:48,500 --> 00:12:50,567
The magnetic structure and cone.
336
00:12:50,567 --> 00:12:52,567
They screw the front plate, the
337
00:12:52,567 --> 00:12:54,633
Plate with the bigger hole, onto
338
00:12:54,633 --> 00:12:59,900
The glued surface.
339
00:12:59,900 --> 00:13:01,800
Then they glue the underside of
340
00:13:01,800 --> 00:13:03,633
The front plate and one side of
341
00:13:03,633 --> 00:13:05,433
A ferrite, a ceramic ring made
342
00:13:05,433 --> 00:13:08,767
From the iron powder.
343
00:13:08,767 --> 00:13:10,400
After adhering the ferrite to
344
00:13:10,400 --> 00:13:12,200
The front plate, they apply glue
345
00:13:12,200 --> 00:13:13,600
To the other side of the
346
00:13:13,600 --> 00:13:15,233
Ferrite, then flip the basket
347
00:13:15,233 --> 00:13:17,933
Over to attach the back plate.
348
00:13:17,933 --> 00:13:19,667
The core fits through the large
349
00:13:19,667 --> 00:13:21,067
Hole in the front plate.
350
00:13:21,067 --> 00:13:22,767
They insert shims to center it
351
00:13:22,767 --> 00:13:25,367
While the glue dries.
352
00:13:25,367 --> 00:13:27,200
After screwing terminals to the
353
00:13:27,200 --> 00:13:28,833
Basket, they put the entire
354
00:13:28,833 --> 00:13:30,700
Structure they've just assembled
355
00:13:30,700 --> 00:13:32,533
Into a magnetizing machine with
356
00:13:32,533 --> 00:13:36,133
600 volts of direct current.
357
00:13:36,133 --> 00:13:37,867
The machine creates positive and
358
00:13:37,867 --> 00:13:39,633
Negative poles, transforming the
359
00:13:39,633 --> 00:13:41,067
Magnetic structure into a
360
00:13:41,067 --> 00:13:42,800
Permanent magnet, meaning it has
361
00:13:42,800 --> 00:13:44,533
A constant magnetic field around
362
00:13:44,533 --> 00:13:46,800
It.
363
00:13:46,800 --> 00:13:48,933
Now they wind the voice coil --
364
00:13:48,933 --> 00:13:51,067
The electronic magnet that will
365
00:13:51,067 --> 00:13:52,967
Interact with the permanent
366
00:13:52,967 --> 00:13:54,433
Magnet.
367
00:13:54,433 --> 00:13:55,700
An electromagnet is an
368
00:13:55,700 --> 00:13:57,400
Object that generates a magnetic
369
00:13:57,400 --> 00:13:58,800
Field only when there's a
370
00:13:58,800 --> 00:14:00,767
Current running through it.
371
00:14:00,767 --> 00:14:02,567
They wind enamel-insulated
372
00:14:02,567 --> 00:14:04,400
Copper wire, gluing it to a
373
00:14:04,400 --> 00:14:05,767
Rigid plastic sheet.
374
00:14:05,767 --> 00:14:07,400
The positive pole of this
375
00:14:07,400 --> 00:14:09,367
Voice coil will be attracted to
376
00:14:09,367 --> 00:14:10,933
The negative pole of the
377
00:14:10,933 --> 00:14:12,267
Permanent magnet.
378
00:14:12,267 --> 00:14:14,367
The negative poles will repel
379
00:14:14,367 --> 00:14:15,267
Each other.
380
00:14:15,267 --> 00:14:17,333
The key is that the voice coil's
381
00:14:17,333 --> 00:14:19,267
Poles are constantly reversing
382
00:14:19,267 --> 00:14:21,067
Position because the electrical
383
00:14:21,067 --> 00:14:22,667
Current running to the speaker
384
00:14:22,667 --> 00:14:24,167
Is an alternating current,
385
00:14:24,167 --> 00:14:26,067
Meaning it switches between a
386
00:14:26,067 --> 00:14:27,767
Positive and negative charge
387
00:14:27,767 --> 00:14:31,400
Several times per second.
388
00:14:31,400 --> 00:14:33,067
This makes the magnets attract
389
00:14:33,067 --> 00:14:34,133
And repel each other
390
00:14:34,133 --> 00:14:35,500
Continuously, causing the
391
00:14:35,500 --> 00:14:36,967
Voice coil to move back and
392
00:14:36,967 --> 00:14:39,233
Forth rapidly.
393
00:14:39,233 --> 00:14:40,900
This vibrates the cone, which
394
00:14:40,900 --> 00:14:44,333
Creates sound waves.
395
00:14:44,333 --> 00:14:45,967
After slipping the voice coil
396
00:14:45,967 --> 00:14:47,700
Between the front plate and the
397
00:14:47,700 --> 00:14:49,367
Core, they glue on the bottom
398
00:14:49,367 --> 00:14:51,067
Suspension -- flexible fabric
399
00:14:51,067 --> 00:14:52,400
Rings that move with the
400
00:14:52,400 --> 00:14:54,067
Voice coil and prevent it from
401
00:14:54,067 --> 00:14:55,433
Rubbing on the magnetic
402
00:14:55,433 --> 00:14:56,733
Structure.
403
00:14:56,733 --> 00:14:58,767
Next, they glue the cone.
404
00:14:58,767 --> 00:15:01,267
It's usually made of cardboard,
405
00:15:01,267 --> 00:15:02,833
Plastic, or metal.
406
00:15:02,833 --> 00:15:04,400
Then solder the electrical
407
00:15:04,400 --> 00:15:05,267
Connections.
408
00:15:05,267 --> 00:15:06,900
The current coming from the
409
00:15:06,900 --> 00:15:08,800
Amplifier travels by wire to the
410
00:15:08,800 --> 00:15:09,933
Two terminals.
411
00:15:09,933 --> 00:15:11,967
The terminal wires connect to
412
00:15:11,967 --> 00:15:13,500
The voice coil wires.
413
00:15:13,500 --> 00:15:15,700
After making sure the cone moves
414
00:15:15,700 --> 00:15:17,667
Freely without rubbing, they
415
00:15:17,667 --> 00:15:19,700
Glue on a rigid cardboard cap
416
00:15:19,700 --> 00:15:22,533
To keep out dust.
417
00:15:22,533 --> 00:15:24,067
The last step is to take the
418
00:15:24,067 --> 00:15:27,067
Speaker for an audio test drive.
419
00:15:27,067 --> 00:15:28,667
They connect it to a machine
420
00:15:28,667 --> 00:15:30,100
That transmits different
421
00:15:30,100 --> 00:15:30,967
Frequencies.
422
00:15:30,967 --> 00:15:32,733
They make sure the movement of
423
00:15:32,733 --> 00:15:34,433
The voice coil and cone isn't
424
00:15:34,433 --> 00:15:36,067
Obstructed in any way.
425
00:15:36,067 --> 00:15:38,267
Then a computer device analyzes
426
00:15:38,267 --> 00:15:40,467
The sound wave the driver sends
427
00:15:40,467 --> 00:15:41,867
Out.
428
00:15:41,867 --> 00:15:44,067
Two-way speaker systems have two
429
00:15:44,067 --> 00:15:46,067
Drivers in each enclosure -- a
430
00:15:46,067 --> 00:15:47,433
Woofer and tweeter.
431
00:15:47,433 --> 00:15:49,467
A woofer has a large cone that
432
00:15:49,467 --> 00:15:51,400
Vibrates more slowly for low
433
00:15:51,400 --> 00:15:52,433
Frequencies.
434
00:15:52,433 --> 00:15:54,600
A tweeter has a small cone that
435
00:15:54,600 --> 00:15:56,433
Vibrates quickly for high
436
00:15:56,433 --> 00:15:57,467
Frequencies.
437
00:15:57,467 --> 00:15:59,533
Three-way systems have a third
438
00:15:59,533 --> 00:16:01,767
Driver with a medium-sized cone
439
00:16:01,767 --> 00:16:05,533
For the midranges.
440
00:16:14,500 --> 00:16:16,067
>> narrator: at most hotels,
441
00:16:16,067 --> 00:16:17,533
Room keys are a thing of the
442
00:16:17,533 --> 00:16:17,967
Past.
443
00:16:17,967 --> 00:16:19,667
You're more likely these days to
444
00:16:19,667 --> 00:16:20,833
Be given a key card.
445
00:16:20,833 --> 00:16:22,467
When you arrive at the door to
446
00:16:22,467 --> 00:16:24,100
Your room, you swipe or insert
447
00:16:24,100 --> 00:16:25,767
It to unlock the handle and get
448
00:16:25,767 --> 00:16:27,400
In.
449
00:16:27,400 --> 00:16:29,167
Because the room number doesn't
450
00:16:29,167 --> 00:16:30,967
Appear on the card, this system
451
00:16:30,967 --> 00:16:32,600
Is far more secure than door
452
00:16:32,600 --> 00:16:38,800
Locks with a keyhole.
453
00:16:38,800 --> 00:16:40,367
The metal case that houses the
454
00:16:40,367 --> 00:16:41,767
Door lock's mechanical and
455
00:16:41,767 --> 00:16:43,367
Electronic components is called
456
00:16:43,367 --> 00:16:47,200
The housing.
457
00:16:47,200 --> 00:16:49,067
To make it, they begin by
458
00:16:49,067 --> 00:16:50,600
Melting zinc ingots.
459
00:16:50,600 --> 00:16:52,733
To melt zinc, you have to heat
460
00:16:52,733 --> 00:16:54,467
It to about 734 degrees
461
00:16:54,467 --> 00:16:55,633
Fahrenheit.
462
00:16:55,633 --> 00:16:58,300
Die-cast machinery then injects
463
00:16:58,300 --> 00:17:00,900
The molten zinc into molds.
464
00:17:00,900 --> 00:17:02,733
Between injections, sprayers
465
00:17:02,733 --> 00:17:04,600
Coat the empty mold cavities
466
00:17:04,600 --> 00:17:06,600
With a release agent, the
467
00:17:06,600 --> 00:17:08,533
Industrial equivalent of
468
00:17:08,533 --> 00:17:10,767
Greasing a baking pan.
469
00:17:10,767 --> 00:17:12,367
A built-in cooling system
470
00:17:12,367 --> 00:17:13,600
Hardens the metal.
471
00:17:13,600 --> 00:17:15,367
Then a trimming die cuts off
472
00:17:15,367 --> 00:17:17,167
Excess zinc around each piece
473
00:17:17,167 --> 00:17:22,400
And in the openings.
474
00:17:22,400 --> 00:17:24,100
Meanwhile, the electronic
475
00:17:24,100 --> 00:17:26,167
Circuit board, the brain of the
476
00:17:26,167 --> 00:17:27,767
Lock, takes shape.
477
00:17:27,767 --> 00:17:30,067
They call this the "Pick and
478
00:17:30,067 --> 00:17:31,100
Place" machine.
479
00:17:31,100 --> 00:17:32,467
It picks up the 60-odd
480
00:17:32,467 --> 00:17:34,367
Electronic components and places
481
00:17:34,367 --> 00:17:36,100
Them in the right position on
482
00:17:36,100 --> 00:17:38,267
Each board.
483
00:17:38,267 --> 00:17:40,200
This computer-guided machine
484
00:17:40,200 --> 00:17:42,233
Installs 15,000 components per
485
00:17:42,233 --> 00:17:44,700
Hour.
486
00:17:44,700 --> 00:17:46,633
Next, the boards undergo what's
487
00:17:46,633 --> 00:17:48,100
Called wave soldering.
488
00:17:48,100 --> 00:17:49,867
A mix of molten lead and tin
489
00:17:49,867 --> 00:17:51,533
Surges up from underneath,
490
00:17:51,533 --> 00:17:53,467
Fusing components in place and
491
00:17:53,467 --> 00:17:57,633
Creating electrical bonds.
492
00:17:57,633 --> 00:17:59,600
Then, both sides of each circuit
493
00:17:59,600 --> 00:18:00,933
Board get a coat of
494
00:18:00,933 --> 00:18:02,433
Silicon-based sealant.
495
00:18:02,433 --> 00:18:04,267
This protects the components
496
00:18:04,267 --> 00:18:06,367
Against the elements.
497
00:18:06,367 --> 00:18:08,500
Back to the housings now.
498
00:18:08,500 --> 00:18:10,133
Workers lubricate them with
499
00:18:10,133 --> 00:18:12,067
Grease and apply what's called a
500
00:18:12,067 --> 00:18:13,500
Sleeve bearing -- a nylon
501
00:18:13,500 --> 00:18:15,333
Bearing that enables the handle
502
00:18:15,333 --> 00:18:18,333
To turn smoothly.
503
00:18:18,333 --> 00:18:20,400
Next comes the drive tube onto
504
00:18:20,400 --> 00:18:22,067
Which the lever will be
505
00:18:22,067 --> 00:18:24,233
Assembled on the other side.
506
00:18:24,233 --> 00:18:25,600
There are several clutch
507
00:18:25,600 --> 00:18:27,267
Components that link the lever
508
00:18:27,267 --> 00:18:28,133
To the latch.
509
00:18:28,133 --> 00:18:29,800
Swipe the right card, and they
510
00:18:29,800 --> 00:18:34,267
Permit the latch to retract.
511
00:18:34,267 --> 00:18:36,067
After applying more lubricant,
512
00:18:36,067 --> 00:18:37,667
They install an override that
513
00:18:37,667 --> 00:18:39,367
Enables the hotel to open the
514
00:18:39,367 --> 00:18:41,067
Door with a key, if, for some
515
00:18:41,067 --> 00:18:42,433
Reason, the electronics
516
00:18:42,433 --> 00:18:47,200
Malfunction.
517
00:18:47,200 --> 00:18:48,600
They install the circuit board
518
00:18:48,600 --> 00:18:49,967
And connect it to the various
519
00:18:49,967 --> 00:18:51,767
Parts it controls, such as the
520
00:18:51,767 --> 00:18:53,667
Clutch motor, which they install
521
00:18:53,667 --> 00:18:55,467
Next.
522
00:18:55,467 --> 00:18:57,200
Now they close up the completed
523
00:18:57,200 --> 00:18:58,433
Housing with the steel
524
00:18:58,433 --> 00:18:59,300
Back plate.
525
00:18:59,300 --> 00:19:01,433
This protects the components
526
00:19:01,433 --> 00:19:03,067
Inside from rusting.
527
00:19:03,067 --> 00:19:05,100
The last step is to insert a
528
00:19:05,100 --> 00:19:06,100
Battery pack.
529
00:19:06,100 --> 00:19:08,200
It holds three standard double-a
530
00:19:08,200 --> 00:19:11,900
Batteries.
531
00:19:11,900 --> 00:19:13,733
The factory tests the lock using
532
00:19:13,733 --> 00:19:15,567
A test key card because the lock
533
00:19:15,567 --> 00:19:17,200
Isn't yet programmed to work
534
00:19:17,200 --> 00:19:18,767
With a specific card.
535
00:19:18,767 --> 00:19:23,867
That's done after installation.
536
00:19:23,867 --> 00:19:25,433
Elsewhere in the factory, they
537
00:19:25,433 --> 00:19:27,067
Assemble the mortise -- the part
538
00:19:27,067 --> 00:19:28,733
Of the lock that goes inside the
539
00:19:28,733 --> 00:19:29,300
Door.
540
00:19:29,300 --> 00:19:31,167
When you lock up, the mortise's
541
00:19:31,167 --> 00:19:33,067
Bolt comes out of the door's
542
00:19:33,067 --> 00:19:35,067
Edge and fits into the hole of a
543
00:19:35,067 --> 00:19:37,133
Receiving piece, called a strike
544
00:19:37,133 --> 00:19:39,400
Plate, in the door frame.
545
00:19:49,767 --> 00:19:51,067
They close up the mortise with
546
00:19:51,067 --> 00:20:00,067
The back plate.
547
00:20:00,067 --> 00:20:01,367
This demonstration shows how
548
00:20:01,367 --> 00:20:02,900
They install the mortise in the
549
00:20:02,900 --> 00:20:03,767
Door.
550
00:20:03,767 --> 00:20:06,467
Once it's in, they screw a
551
00:20:06,467 --> 00:20:08,767
Decorative plate on top.
552
00:20:16,233 --> 00:20:18,400
This is what the finished
553
00:20:18,400 --> 00:20:20,667
Electronic door looks like.
554
00:20:20,667 --> 00:20:23,133
Key cards have instructions on
555
00:20:23,133 --> 00:20:25,767
One side, a magnetic data stripe
556
00:20:25,767 --> 00:20:27,467
On the other.
557
00:20:27,467 --> 00:20:29,133
They use a generic card to test
558
00:20:29,133 --> 00:20:30,700
Every lock that comes off the
559
00:20:30,700 --> 00:20:36,300
Production line.
560
00:20:36,300 --> 00:20:38,200
In the quality-control lab, they
561
00:20:38,200 --> 00:20:39,867
Subject every new design to
562
00:20:39,867 --> 00:20:41,800
Several rigorous tests.
563
00:20:41,967 --> 00:20:43,933
They open and close 1 million
564
00:20:43,933 --> 00:20:47,733
Times.
565
00:20:47,733 --> 00:20:49,600
They subject the lever, latch,
566
00:20:49,600 --> 00:20:55,667
And lock to repeated impacts.
567
00:20:55,667 --> 00:20:57,567
They also test lock function in
568
00:20:57,567 --> 00:21:02,167
Extreme temperatures.
569
00:21:02,167 --> 00:21:04,267
These electronic door locks come
570
00:21:04,267 --> 00:21:06,333
In several metal finishes plated
571
00:21:06,333 --> 00:21:08,133
Over the zinc and even in a
572
00:21:08,133 --> 00:21:10,067
Painted finish that simulates
573
00:21:10,067 --> 00:21:13,267
Wood.
574
00:21:18,467 --> 00:21:20,167
If you have any comments about
575
00:21:20,167 --> 00:21:21,767
The show, or if you'd like to
576
00:21:21,767 --> 00:21:23,067
Suggest topics for future shows,
577
00:21:23,067 --> 00:21:23,600
Drop us a line at...
578
00:21:24,867 --> 00:21:26,900
-- captions by vitac --
Www.Vitac.Com
579
00:21:26,900 --> 00:21:28,933
Captions paid for by
Discovery communications, inc.
37670
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