Have you ever come
across someone who did not grasp a concept that you have understood since... as
long as you can remember?
Recently, I discovered
a friend knew there were phases to the moon, but could not understand that that
meant the moon was not always in the sky at night. It’s true. Let me try to
draw a picture.
(Okay, that’s what
kind of drawing you get when you turn me loose with Microsoft’s ‘Paint’ for
half an hour.)
I hope you can
recognize the sun, Earth, and then four positions of the moon around the Earth.
Each moon position shows what the moon would look like from Earth. So, when the
Earth is ‘between’ the sun and the moon, we see a Full Moon; sunlight is
reflected from the entire face that we see. When the moon is sitting roughly on
the Earth’s orbit, we would see a Half Moon; sunlight is reflected from half
the surface that faces Earth. When the moon is ‘between’ the sun and Earth, we
see a New Moon; sunlight is reflected from the side we don’t see, and
the side facing Earth is dark. We can all agree on that, right?
Now, to me, just
looking at this picture makes it obvious that the New Moon is in the sky
roughly the same time as the sun. Therefore, the moon is in the sky during the
day, not at night.
You’ve seen the moon
during the day, haven’t you? I’ve seen it many times.
But if you don’t want
to believe me or this picture, here are some rising and setting moon times for
Omaha NE I’ve looked up on the internet (Daylight Savings Time):
March 26, 2015 Half Moon, roughly Rise 10:56 AM (morning) Set 12:47 AM (after midnight)
April 4, 2015 Full Moon Rise 7:18 PM Set 6:08 AM
April 10, 2015 Half Moon, roughly Rise 12:56 AM (after midnight) Set 10:09 AM
April 18, 2015 New Moon Rise 5:42 AM Set 7:16 PM
Now, on April 18,
2015, in Omaha, the sun will rise at 6:40 AM and set at 8:07 PM, so,
yes, the moon will be in the sky at roughly the same time as the sun.
So, if you are
reading (or writing) a story, and in a scene set at 1:00 AM, the New Moon is
not reflecting enough light to help the hero find his way down the alley... Of
course it won’t. Not only is it a New Moon, and not reflecting light at the
Earth, it’s not even in the sky at 1 AM! It’s on the opposite side of the
world, appearing during daylight.
Any questions?
No comments:
Post a Comment