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Talk:History of science (view source)
Revision as of 16:17, November 23, 2011
, 16:17, November 23, 2011no edit summary
:: How would one know that certain knowledge predates record history?--[[User:Aschlafly|Andy Schlafly]] 21:02, 20 November 2011 (EST)
:: How would one know that certain knowledge predates record history?--[[User:Aschlafly|Andy Schlafly]] 21:02, 20 November 2011 (EST)
:::If you chase a mammoth over a small cliff, it won't hurt itself, if you chase it over a big cliff, you get a big splash, made by a fast mammoth. Our ancestors used this knowledge... :-)
:::Aristotle knew this effect, too, but he didn't speculate whether the acceleration is constant.
:::Galileo was AFAIK the first to say that the acceleration is constant. He used his experiments with a ramp to this effect. [[User:AugustO|AugustO]] 11:17, 23 November 2011 (EST)
What I'm trying to track down is the claim that Aristotle and all those ancient Greek philosophers were so "theory-minded" that they never noticed falling objects gradually picking up speed. Any primitive boy watching a waterfall could see that the water falls faster and faster, the longer it falls. How could Galileo have been the first one to observe this?
What I'm trying to track down is the claim that Aristotle and all those ancient Greek philosophers were so "theory-minded" that they never noticed falling objects gradually picking up speed. Any primitive boy watching a waterfall could see that the water falls faster and faster, the longer it falls. How could Galileo have been the first one to observe this?