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 You will have one Glass prism, screen and ray- box  Try to use the apparatus above to make rainbow Questions  What did you observe from the above.

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Presentation on theme: " You will have one Glass prism, screen and ray- box  Try to use the apparatus above to make rainbow Questions  What did you observe from the above."— Presentation transcript:

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2  You will have one Glass prism, screen and ray- box  Try to use the apparatus above to make rainbow Questions  What did you observe from the above settings?  If you are a scientist, what hypothesis will you suggest?

3  When the white light passes the prism, it will refract and disperse into seven colours.  White light is a mixture of coloured lights.  They are red, orange, yellow, green, indigo, blue and violet.  This is called colour spectrum.

4  How to make rainbow by yourself? http://hk.youtube.com/watch?v=fIbxHqPyF2U

5  Why does the man stand against the sunlight when he is making the rainbow?  Answer: Only when the sun light from our backside can produce totally internal reflection, and received by ours eyes.

6  Misconception Rainbow is produced just by one droplet

7  http://hk.youtube.com/watch?v=LoL1Mn5v6GY http://hk.youtube.com/watch?v=LoL1Mn5v6GY


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