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hello friends this video on fun with
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magnets part 1 is brought to you by exam
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vo calm no more fear from exam topics to
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be covered in this lesson our
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introduction magnet discovery of magnet
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magnetic and non-magnetic materials
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poles of magnet magnet finds directions
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different types of magnets attraction
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and repulsion between magnets so before
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we have fun with magnets you might be
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interested or curious to know what a
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magnet is now have I ever noticed that
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sometimes if you bring objects like
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nails or any other objects made up of
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iDEN specially when you try to bring
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them near an object what happens they
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try to stick to that object they get
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attracted towards that object so so
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right now you don't know what that
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object is but it is like a small piece
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of some heavy better light thing that's
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how it appear to be but whenever you
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bring some specific metals near it like
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Ireland nails so these males tend to get
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attracted towards that object not only
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that if you have ever noticed a magnetic
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compass I mean this is a small dial
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which looks almost like the dial of your
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wristwatch but it doesn't show you time
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instead it tells you directions that
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which there is not which this out so it
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has a needle with a red and this needle
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points and the directions so what does
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this little I mean how does that needle
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detect directions so these are
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interesting stuffs think of a
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screwdriver have you ever seen a
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screwdriver you must have I mean it is
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if it is something which is very
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commonly kept in houses because it helps
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you to you know screw and unscrew little
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stubs in your house so if you look at
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the tip of the screwdriver so there is
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some
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at the tip of the screwdriver that
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whenever you bring these kind of objects
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like iron nails near it they tend to get
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attracted towards it
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think of the doors of the trains not the
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not all the trains of course but mostly
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the Metro so if you have ever been into
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the Metro in Delhi or Calcutta or Mumbai
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in the metro trains you would see that
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how the doors get closed and when the
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doors get closed on their own and that
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is something due to which the two doors
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get attracted towards each other as they
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come nearer
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so not only the doors in Metro take
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trains but a lot of in a lot of other
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places for example when you look at the
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refrigerators are even the glass doors
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in many companies or malls you see that
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they tend to get the two slides of the
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door when they come nearer they tend to
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get attracted to each other so wherever
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you are seeing these kind of attraction
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there is no magic there is a simple
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science behind so you talk about the CDs
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or you talk about the fridge magnets so
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have you ever seen that there are some
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small small objects maybe some cartoons
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or some pictures and they wherever you
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take them near the surface of the fridge
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they stick to the fridge so we often
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want them as fridge magnets so why do
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they stick to the body of the
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refrigerator what special is there
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behind these objects so in each of these
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examples you see that there is some
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object which is trying to attract some
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certain objects so this object which has
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this property of you know kind of
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attracting certain materials this object
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is a magnet and magnet is widely used in
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various applications for example you
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look at various electrical devices
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whether you talk about the generators
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the motors so you see that a magnet
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a very important role inside them so we
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were not getting to that detail but here
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in this lesson I will just introduce
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magnet what a magnet is what are the
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basic properties of a magnet so so we
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will just have a very brief introduction
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of magnet so what is a magnet it is an
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object that exhibits the property to
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attract certain materials towards itself
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now please make a note of it that it can
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attract only certain materials and not
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all so please do not think that if you
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have a magnet you can attract anything a
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human being will not get attracted
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towards the magnet or a piece of paper
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will not get attracted towards the
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magnet so there are certain specific
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materials which only get attracted
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towards a magnet but why the magnet
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attracts to specific materials and what
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are those specific materials so we will
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learn about them gradually step by step
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so the best example of magnet that you
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can think of is the fridge magnet so
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maybe if any one of you have never seen
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a magnet so I think this would be the
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most easily available magnet so if even
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if you don't have it in your home you
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can just worry any shop and you can ask
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for a fridge magnet and then you will
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see that it's like a any picture or
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statue or something and behind it there
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is a small magnet so as you bring it
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near the refrigerator it sticks to the
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refrigerator so again while it sticks to
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the refrigerator because the body of the
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refrigerator is made up of iron so again
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as I say there are only certain
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materials in spirit similarly if you
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have a screwdriver in your home then
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just have a observe the tip of the
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screwdriver now let me ask you something
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why do we use true driver so mostly when
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you want to say screw up something maybe
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in screw up in the sense when you want
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to fit a screw into something to fit to
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different parts of any object or when
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you want to remove separate the two
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parts then
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and you want to unscrew it so what
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happens is even these kind of nails so
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these are also made up of iron so these
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materials get attracted towards this tip
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of the screwdriver so that helps the
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screwdriver to do its job so here also
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you see that the tip has up it is
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actually a magnetic tip so there is a
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small magnet at the tip of the
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screwdriver so just try it out you also
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just try to bring some iron nails near
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the tip of a screwdriver and you will
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see that the nails tend to get attracted
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towards it so these are some very common
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examples of magnets so just try to
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observe them and try to see the this
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beautiful property of magnets this will
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help you to understand what a magnet is
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thank you
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please visit www.payoor.com to watch
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more educational videos with a better
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experience please do not forget to Like
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