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"An Eclipse is an interception or obscuration of the light of the sun, moon, or other heavenly body by the intervention of another and non-luminous heavenly body or by its shadow."—(Charles Leonard-Stuart, 1911)

Eclipse

"An Eclipse is an interception or obscuration of the light of the sun, moon, or other heavenly body…

"When the Moon falls into the shadow of the Earth, the rays of the Sun are intercepted, or hid from her, and she then becomes eclipsed. when the Earth's shadow covers a part of her face, as seen by us, she suffers only a partial eclipse, one part of her disc being obscured, while the other part reflects the Sun's light. But when her whole surface is obscured by the Earth's shadow, she then suffers a total eclipse, and of a duration proportionate to the distance she passes through the Earth's shadow." —Comstock, 1850

Moon Eclipse

"When the Moon falls into the shadow of the Earth, the rays of the Sun are intercepted, or hid from…

The phases of the moon.

Moon Phases

The phases of the moon.

"When the moon psses between the Earth and Sun, there happens an eclipse of the Sun, because then the Moon's shadow falls upon the Earth. A total eclipse of the Sun happens often, but when it occurs, the total obscurity is confined to a small part of the Earth; since the dark portion of the Moon's shadow never exceeds 200 miles in diameter on the Earth. But the Moon's partial shadow, or penumbra, may cover a space on the Earth of more than 4,000 miles in diameter, within all which space the Sun will be more or less eclipsed. When the penumbra first touches the Earth, the eclipse begins at that place, and ends when the penumbra leaves it. But the eclipse will be total only where the dark shadow of the Moon touches the earth." —Comstock, 1850

Sun Eclipse

"When the moon psses between the Earth and Sun, there happens an eclipse of the Sun, because then the…

"Corona (a crown) in astronomy is a halo or luminous circle round one of the heavenly bodies; specifically the portion of the aureola observed during total eclipses of the sun, which lies outside the chromosphere or region of colored prominences. "—(Charles Leonard-Stuart, 1911)

Corona of the Sun

"Corona (a crown) in astronomy is a halo or luminous circle round one of the heavenly bodies; specifically…

"Umbra and Penumbra. A solar eclipse, with the penumbra, d, c, and the umbra or dark shadow is seen here. When the Moon is at its greatest distance from the Earth, its shadow m o, sometimes terminates, before it reaches the Earth, and then an observer standing directly under the point o, will see the outer edge of the Sun, forming a bright ring around the circumference of the Moon, thus forming an annular eclipse." —Comstock, 1850

Umbra

"Umbra and Penumbra. A solar eclipse, with the penumbra, d, c, and the umbra or dark shadow is seen…