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Author Topic: Making a rainbow  (Read 2452 times)

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Offline JonathanM

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Making a rainbow
« on: April 27, 2013, 12:11:07 PM »
Make a rainbow!

You will need


   Plastic cup of water
   Sheet of white paper
   The sun

Process

Fill the plastic cup all the way to the top with water.
Put the plastic cup of water on a table so that it is half on the table and half off of the table. Be careful that the plastic cup doesn't fall.
Next, make sure that the sun can shine through the plastic cup of water and place the sheet of white paper on the floor
Adjust the piece of white paper and the plastic cup of water until a rainbow forms on the paper.

Explanation

Why does this happen? Light is made up of a lot of colours. Specifically, the colours are red, orange, yellow, green, blue, indigo and violet. When light passes through the water, it is broken up into the colours seen in a rainbow.

Offline Weather Display

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Re: Making a rainbow
« Reply #1 on: April 27, 2013, 07:26:37 PM »
ah, cool, so its liking like a prism :)
how long did you have to wait to see the sun for that experiment in the UK?
hehe

Offline CotswoldWeather

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Re: Making a rainbow
« Reply #2 on: April 27, 2013, 07:53:24 PM »
Haha, too damn long !!

Offline JonathanM

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Re: Making a rainbow
« Reply #3 on: April 27, 2013, 08:00:39 PM »
So far, I there hasn't actually been enough sun when I've had time to do things, so I'm looking for an opportune moment to try this out for myself. I'll report back to you here when I've managed to do it, maybe I'll include a picture. Keep your eyes open for more 8O

 

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