iit (1st trial of slideshare)
TRANSCRIPT
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You will have one Glass prism, screen and ray-box
Try to set your apparatus as you like
Questions what will you observe after your
setting? If you are scientist, what hypothesis will
you suggest?
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When white light pass the prism, the light 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.
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How to make rainbow by yourself?
http://hk.youtube.com/watch?v=fIbxHqPyF2U
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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.
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Misconception Rainbow is produced just by one
droplet
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http://hk.youtube.com/watch?v=LoL1Mn5v6GY