Light always doesn’t travel at standard speed of light

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:Light always doesn’t travel at speed of light. Light can be slowed down also and the standard speed of light is 299792 Km/s and the slowest speed of light first attained was 17 meters per second. Later on after a scientist was even able to stop the light completely and then restart the light. We all know that when light enters into different mediums, there is a shift in light speed. The effect was gained through the same phenomenon. Slow light got a lot of uses, slow light can be used to transfer data with less noise. Slow lightin telephone can be used for better voice and video transfers.This is really an interesting fact to knowthat light can actually be stopped and resumed.

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