Recent content by bcmarshall

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    Stargazing What's Happening in the Night Sky? Upcoming Astronomy Events to Look Out For!

    Thanks. No, I hadn't heard about it. I'm having my Hungarian native uncle translate it for me tomorrow.
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    Since I started this thread, I spent a lot more time observing the moon and I realize that my assumptions about vertical shadows are completely incorrect. Even outside my own house tonight was a perfect example of how wrong that was. I took a photo, blurry because of a lack of tripod, but...
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    Actually the only thing injured is my pride. I have to stand before the whole forum and say, "I'm not smarter than a 5th Grader!" :cry: Oh well, could be worse...I think!
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    Great explanation. Thanks to all of you. It was enlightening for me. BTW, I lost the bet with my friend. That sux! :redface:
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    Good diagram, and thank you. I'm finally starting to see the mechanism involved, and the rest sort of clears itself up. I appreciate the answers.
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    Thanks for the pictures. They are very enlightening indeed, and you're right, I've never seen the moon like that before. What's even more interesting to me is that India is still in the Northern Hemisphere! Thanks.
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    I guess I'm just thick, but in either case we're looking at an object a quarter million miles away. Moving toward the pole on either object would certainly change the height in the sky that the other would appear, but we're talking about a perception of a shadow line on that object. It just...
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    I don't understand what mechanism would cause a 90 degree shift in perception. Perhaps you can explain. We see the line vertically on the Moon from the Earth. What could possibly cause a horizontal appearance of the shadow line on Earth? There is of course only one source of light, the...
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    Stargazing What's Happening in the Night Sky? Upcoming Astronomy Events to Look Out For!

    My apologies. I figured out too late how to start a new thread and did so. Please post any responses at the other link, https://www.physicsforums.com/showthread.php?p=2452328#post2452328" Thanks.
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    High School Comparing Half Earths: Horizontal or Vertical Shadow Line?

    [FONT="Comic Sans MS"]Sorry, I'm a newbie here and didn't know how to start a new thread, so I posted a question in another forum and then figured out how. I'm trying to redirect answers here. I'm arguing with a friend about how a half-Earth would appear from the Moon. Since we see the Moon...
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    Stargazing What's Happening in the Night Sky? Upcoming Astronomy Events to Look Out For!

    Earth v. Moon [FONT="Comic Sans MS"]Sorry, I'm a newbie here and didn't know how to start a new thread, so I figured I'd post a question in this one since it has a lot of subscribers. I'm arguing with a friend about how a half-Earth would appear from the Moon. Since we see the Moon in...