6) the Sun is completely occulted by the Moon and an observer can no longer see the Sun. The eclipse is total. Because the shadow of the Moon is just long enough to reach the Earth, ... However, this doesn't always work out. The Moon's orbit is slightly elliptical. This means that the Moon is sometimes further from the Earth,
www.astro.oma.be/INFO/ecl1_en.html
All solar eclipses involve the Moon passing between the Earth and the Sun, and casting a shadow on the Earth. ... As the eclipse path moves on, the umbra has less far to travel to reach the Earth, and is just long enough to reach the "centre" (ie. the part most directly facing the Moon); so observers in the area coloured...
www.eclipse2006.boun.edu.tr/eclipse.htm
Solar eclipse - Wikipedia, the free encyclopedia
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A solar eclipse occurs when the moon passes between the Sun and the Earth so that the Sun is fully or partially covered. This can only happen during a new moon, when the Sun and Moon are in conjunct...
en.wikipedia.org/wiki/Solar_eclipse
10. Is the shadow of the moon always long enough to reach the Earth? 11. At what phase does an annular eclipse occur? 12. Show, by a freehand drawing, how the sun appears from the Earth as seen from the center of an annular eclipse.
www.pelham.k12.ny.us/Schools/pms/unit8/Eclipses.pdf
Not always. The Sun is always shining on half the earth, and when there is a full moon no part of the back side of our moon is... ... ; Is the shadow of the moon always long enough to reach the Earth?
wiki.answers.com/Q/FAQ/4402-50
Annular eclipses occur when the Moon is far enough from Earth so that its shadow cone does not quite reach Earth's surface. ... Total lunar eclipses are still possible because Earth's shadow is long enough to intersect the Moon, even at twice the current distance of Moon from Earth.
www.courses.psu.edu/astro/astro001_pjm25/mooneclipse4.h... www.courses.psu.edu/astro/astro001_pjm25/mooneclipse4.html
A third type of solar eclipse occurs when the Moon's umbra passes across the Earth, but is not quite long enough to touch the surface; the shadow cone diminishes to a point before reaching the Earth. This effect happens when the Moon is farther out in its orbit around the Earth.
www.earthview.com/tutorial/causes.htm www.earthview.com/tutorial/causes.htm
antumbra [L. umbra, shadow + ant-, against] the so-called "negative" shadow of the Moon that appears when the Moon is on the far side of its orbit and its umbral shadow is not long enough to reach Earth...
home.comcast.net/~wwftd/abc.htm
Thus we see the same side of the moon always. (front side) ... The shadow placed on one object by another. ... The moons umbra is just long enough to reach the earth at Perigee.
www.ccboe.com/teachers/hcovey/moonnotes.htm www.ccboe.com/teachers/hcovey/moonnotes.htm
actually long enough to pass 23500 km past the centre of the Earth's core. In this ..... always slant from southwest to northeast across the central globe, whereas .... of the umbral shadow does not reach the Earth's surface. ...
www.springerlink.com/index/t820320168m681j1.pdf