Bending of Light by refraction | Light | Physics
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11 سال پیش
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This activity shows how a
This activity shows how a pencil in a half filled glass of water appears to be crooked or bent at the boundary of the water and air. This is known as refraction of light. Light travels at different speeds in different mediums and it travels more slowly in denser mediums. The famously known value for the constant speed of light, is actually its speed in the vacuum of space. When lights enters the atmosphere from space, it slows down slightly to adjust to the density of air. When it enters water or glass from air, it slows down even further as these mediums are denser than air. A consequence of having different speeds in different mediums is that a ray of light bends when going from one medium to another. This bending of light as it goes from water to air before reaching our eyes is what makes the pencil appear bent.
11 سال پیش
در تاریخ 1392/04/11 منتشر شده
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