What is Lunar Eclipse ?

A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow).

A lunar eclipse can occur only the night of a full moon. A total lunar eclipse has the direct sunlight completely blocked by the earth's shadow. The only light seen is refracted through the earth's shadow. This light looks red for the same reason that the sunset looks red, due to rayleigh scattering of the more blue light.

Because of its reddish color, a total lunar eclipse is sometimes called a Blood Moon.

Unlike a solar eclipse, which can be viewed only from a certain relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of the Earth. A lunar eclipse lasts for a few hours, whereas a total solar eclipse lasts for only a few minutes at any given place, due to the smaller size of the Moon's shadow. Also unlike solar eclipses, lunar eclipses are safe to view without any eye protection or special precautions, as they are dimmer than the full moon.

YouTube Link - https://www.youtube.com/watch?v=49O2MsT1txU

Credits - https://en.wikipedia.org/wiki/Lunar_eclipse

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What is Archimedes’ principle ?

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