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Malcolm Ocean in Berlin (37/100 vids)
@Malcolm_Ocean
Reminds me of lots of beaches in Nova Scotia where I grew up ♥️ Huge tides so we'd see a lot of wet rocks!
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Malcolm Ocean in Berlin (37/100 vids)
@Malcolm_Ocean
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Replying to @WeftOfSoul
Meanwhile I grew up a literal stone's throw from the bay with the highest tides in the world, so when I go anywhere with ordinary 2-4m tides it basically feels like there's no tides. Image below is not my hometown but I had to look for a couple seconds to be certain.
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otis 🌞 1/100 beats
@sokindling
Tides is something I've been meaning to look into How can the moon be so far away and be pulling such a huge amount of water this way and that? Something doesn't add up
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QC (in Berlin 7/29-??? w/ COVID 😷)
@QiaochuYuan
here’s another thing that confuses me: in most places the tides are roughly in a 12-hour cycle, meaning 2 high tides and 2 low tides a day (“semi-diurnal”). the naive analysis using the fact that the moon orbits about once a day would suggest that it ought to be about 24 hours
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QC (in Berlin 7/29-??? w/ COVID 😷)
@QiaochuYuan
what i was missing is that when the moon is on the opposite side of the earth from you it's pulling on the earth more strongly than on the ocean because the earth is now closer to it, so the ocean still experiences a net upward force relative to the earth
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