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Paris, France
(
Map
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Mon, 25 Jul 2022 06:28:13 -0300
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Alexandre Hannud Abdo
aleabdo@hubzilla.com.br
☆joene☆
escreveu a seguinte
publicação
Sun, 24 Jul 2022 13:56:39 -0300
https://todon.nl/system/media_attachments/files/108/703/370/410/742/616/original/fd51ff667c18e0ae.mp4
#science
#AncientGreece
#AncientEgypt
#FlatEarth
#history
#CarlSegan
#xp
---
RT @TheFigen
How the ancient Greeks knew the Earth was round...
https://twitter.com/TheFigen/status/1550506415718121473
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2
Haakon Meland Eriksen (Parlementum)
Alimentazione e quello che sta intorno
Mon, 25 Jul 2022 06:57:50 -0300
última edição: Mon, 25 Jul 2022 08:42:24 -0300
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Haakon Meland Eriksen (Parlementum)
parlehaakon@hub.volse.no
Excellent round Earth demonstration by Carl Sagan. :-)
For an even more concrete and personal experience of the roundness of the Earth, stand on a beach with a free view of the horizon in both directions. You can see the Earth curving slightly as a bending of the horizon line in front of you. You can try to align a long straight ruler parallell to the horizon, and you should be able to see the horizon bending at the edges, i.e. the ruler and the horizon are not parallell, because the Earth is round. If you have a hill to stand on, rather than a beach, the horizon bend is even more pronounced.
However, maybe you are still unsure about what your own eyes are telling you?
Get in a boat, and leave the beach and get out on the sea and look at the horizon as you leave. Ships will suddenly appear in front of you. Where do these come from? Magic? No. About 15 000 meters in front of you, 15 kilometers, the curvature of the Earth is so great, you cannot see those ships till the distance is so low that both of you share the same sector of the curvature, like two people coming into view of each other from either side of a small mound or hill. If the Earth was flat, you would see those ships. You can still not believe what your eyes, because sometimes things far away are too small to see. However, even with the most powerful binoculars ever invented you will not be able to see the largest ship if it is beyond the visible curvature. The Earth cannot be flat.
If you still are unconvinced, just bring those binoculars with you as you move the boat 15 kilometres from shore, and then use the binoculars to look back at your beach. You will not be able to see it. You are beyond the curvature of the Earth, because the Earth is not flat.
Since you can try this experience anywhere on the round globe, the possibility of just local curvature where you are right now cannot be the right explanation, because as you stich together all the curved sectors, you will get a globe shape.
Believe your own experience of a round Earth. :-)
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Alimentazione e quello che sta intorno
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