Nostr notes by TobyBartels

: You never see your hand (or anything) the way it looks right ...

2024-11-24T03:17:18Z

In reply to nevent1q…zf6h
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: You never see your hand (or anything) the way it looks right now; you see it as it appeared in the past, when the light left it. As you fall in, hand first, your hand passes the event horizon (entering the black hole) while you're receiving the light from before it entered. Then when your head enters, you receive the light from when your hand entered. Later, you'll see the light that left your hand at the time when your head entered.

: So when a supervillain threatens to destroy the Moon, ending ...

2024-11-21T19:31:23Z

In reply to nevent1q…pfng
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: So when a supervillain threatens to destroy the Moon, ending the tides and disrupting the ecology of bays, it's not that serious?

: >water on the sunny side of the Earth is pulled toward the ...

2024-11-21T17:59:33Z

In reply to nevent1q…0jhy
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>water on the sunny side of the Earth is pulled toward the Sun more than water on the night side

While the Sun does cause a tidal force as you describe, the tides that we see are mainly due to the Moon (which is smaller but much closer). So water on the moony side (if you will) is pulled more, while water on the opposite side is pulled less, and the land (which moves more as a solid chunk) is pulled some amount in the middle. So we get high tide on both the moony side (where up is towards the moon) and on the opposite side (where up is away from the moon).

You probably know this, but it seems weird to focus on the relatively minor tidal effect of the Sun, so I thought that I would clarify for other readers.