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phases: the way we look at the moon
on February 23, 2012
This is a good book but I have to give it a lower score because the author uses the same misleading word, "shadows", several times.
I'm convinced that Bob Crelin knows exactly how phases come about - after all, he designed the really cool Moon Gazer's Wheel that allows us to figure out what phase we can observe during any given day/night at any given time. He also explains phases correctly in this book.
What he calls the "shadowed face" is generally called the dark part of the Moon or simply its night side; that's the same on Earth where we call the night side dark or night but never shadow. I know what he means (the Moon's night side is in its own shadow) and he and I know that (I'm an astronomer). But to the lay person, using the word shadow is misleading because they interpret as meaning the Earth's shadow (which it is not - Earth's shadow only ever plays a role when it causes a lunar eclipse on the full moon about every six months).
Anyway, the way I fixed my book is that I took some white tape and wrote on it:
(page 4) 'and paints her "darkened" face' instead of shadowed,
(page 6) 'light and "darkness" change' instead of shadows,
(page 19) 'not a "dark part" to be found' instead of shadow,
(page 21) 'the "dark sides" start - on Moon's most western part' instead of shadows,
(page 30) 'Half of the Moon is in sunlight, while the other half is "dark".' instead of in shadow.