What causes a rainbow
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13 سال پیش
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A demonstration of how light
A demonstration of how light passes through and round a raindrop by a combination of refraction and reflection, the slight difference in refractive index for different light colours and the consequence in terms of the rainbow seen in the sky.
13 سال پیش
در تاریخ 1390/12/28 منتشر شده
است.
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