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Iit_teaching _aid

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Iit_teaching _aid

  1. 2. <ul><li>You will have one Glass prism, screen and ray-box </li></ul><ul><li>Try to set your apparatus as you like </li></ul><ul><li>Questions </li></ul><ul><li>what will you observe after your setting? </li></ul><ul><li>If you are scientist, what hypothesis will you suggest? </li></ul>
  2. 3. <ul><li>When white light pass the prism, the light will refract and disperse into seven colours. </li></ul><ul><li>White light is a mixture of coloured lights. </li></ul><ul><li>They are red, orange, yellow, green, indigo, blue and violet. </li></ul><ul><li>This is called colour spectrum. </li></ul>
  3. 4. <ul><li>How to make rainbow by yourself? </li></ul><ul><li>http://hk.youtube.com/watch?v=fIbxHqPyF2U </li></ul>
  4. 5. <ul><li>Why does the man stand against the sunlight when he is making the rainbow? </li></ul><ul><li>Answer: Only when the sun light from our backside can produce totally internal reflection, and received by ours eyes. </li></ul>
  5. 6. <ul><li>Misconception </li></ul><ul><li>Rainbow is produced just by one droplet </li></ul>
  6. 7. <ul><li>http://hk.youtube.com/watch?v=LoL1Mn5v6GY </li></ul>

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