‚`‚PF
Solar eclipse is a phenomenon that the moon
eclipses the sun. The sun, the moon, and the earth are on a line in
this order, and shadow of the moon transit on the earth. This is the
principle of solar eclipse.
Total solar eclipse can be seen in a small area on the earth, since
the moon's shadow is small on the earth because of small size of the
moon (1/4 of earth size). Figure (1) shows how does total solar
eclipse occur.
Figure (1)
On the other hand, lunar eclipse is a phenomenon that the moon enters shadow by the earth. The sun, the earth, and the moon are on a line in this order. This is the principle of lunar eclipse.
Figure (2) shows how does lunar eclipse occur.
Even if the moon is eclipsed totally, the moon can be seen red, since
the red ray of the sun is refracted by the earth's atomsphere, and
reachs the moon.
Lunar eclipse can be seen everywhere the moon is in the sky.
Figure (2)
