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This is preposterous. We don't understand gravity.
by beastman82 10y ago
This is preposterous. We don't understand gravity.
- macspoofing 10y ago>This is preposterous. Why don't you read the article? Author's second paragraph starts with: "Obviously there are plenty of things we don’t understand. We don’t know how to quantize gravity, or what the dark matter is, or what breaks electroweak symmetry." - which suggests that he may actually address your point (Hint: he does).
- sanxiyn 10y agoThis is addressed in the post. Everyday life is well explained by general relativity and there is no reason to doubt that it will continue to do so.
- tobinfricke 10y agoWe understand gravity in exquisite detail: the theory of General Relativity is our theory of gravity, and its numerous predictions have proven true again and again. But you don't even need GR for "everyday life." For that, Newtonian gravity suffices, and the entire theory of Newtonian gravity could easily be grokked by a high school student.
- gus_massa 10y agoThe GPS system needs a small but important correction due to Special and General relativity. From: https://en.wikipedia.org/wiki/Global_Positioning_System https://en.wikipedia.org/wiki/Global_Positioning_System > Special and general relativity predict that the clocks on the GPS satellites would be seen by the Earth's observers to run 38 microseconds faster per day than the clocks on the Earth. The GPS calculated positions would quickly drift into error, accumulating to 10 kilometers per day. The relativistic time effect of the GPS clocks running faster than the clocks on earth was corrected for in the design of GPS. More details: http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps.html http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps....
- imaginenore 10y agoWe do. Mass curves space. Curved spaces tells things how to move.