How To Do Cool Light Experiments

In this video, I am going to show you how to do some cool light experiments. For this you will need, some cardboards cut into a disk with a hole in the middle. You will need two of those.

You will need circular paper, one with divided segments drawn or printed on. And one, that has half of it coloured in black and the other half with black dashes or dots. You will need some colouring pens and you will need either half of, sort of, barbeque stick or a pencil.





The first experiment I am going to do is Newton's disc. For this you will need one of the cardboard disc and your paper disc with the divided segments on it. Then you will need to use your pens to colour each of the segments in a different colour.

So you should end up with a disc that looks like that. I have stuck this onto the back of one of my cardboard discs. This is nice and sturdy.

Then, what you can do is put your pencil or barbeque stick through to make a little spinning top, so like that.



Now, how Newton's disc works, is when you spin it you won't see colours, you would see no colours at all. So I have got a motor, I am going to use to demonstrate it spinning really fast.

So I am just going to use a bit of glue tag to put at the back of my disk. I am going to attach that to the top of my motor. Then, just link these up.

I am going to touch the battery and you see the colours disappear.



Now the next experiment we are going to do is Benenze disc which similar, expect that this time we are going to see colours instead of the colours disappearing. So this is where our black and white decorated disc comes in.

So again, attach that to the cardboard disc with a hole through the middle. And again you can use your pencil or barbeque stick. But I am going to demonstrate once again with the motor.

Now this time we should see colours. So I would attach the motor, there. Now, touch the battery and you should see circles of colour as it spins around.

And there you go.



That is how to do cool light experiments.
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