What most astonishes me of this modern world is how plain stupid nonsense
can become common sense by repetition if that serve the purpose to
denigrate the past.


​>>
Aristotle
​ believed that heavy objects fell more quickly than light ones, *something
that could have been easily disproved* *even on his own day *but he
understood it so well, or thought he did, that he didn't bother to make any
observations on the matter.




2015-09-01 5:14 GMT+02:00 meekerdb <[email protected]>:

> On 8/31/2015 3:19 PM, John Clark wrote:
>
>
>
> On Sun, Aug 30, 2015 at 2:14 PM, meekerdb <[email protected]> wrote:
>  ​
>>
>>
>>> ​ >>
>>> Aristotle
>>> ​ believed that heavy objects fell more quickly than light ones,
>>> something that could have been easily disproved even on his own day but he
>>> understood it so well, or thought he did, that he didn't bother to make any
>>> observations on the matter.
>>>
>>
>> ​ > ​
>> But he did observe that a rock fell faster than a leaf. He also believed
>> that an active force was necessary to sustain motion because he observed
>> that if you stopped pulling a wagon it came to a halt.
>>
>
> ​
> Pure logic can't prove that a physical theory is correct but it can prove
> that it's wrong i
> ​ f​
> it's self contradictory and Aristotle's theory was.
> ​ ​
> If you take a heavy rock and tie it to a slightly lighter rock with some
> string that has some slack in it and drop them then both rocks would fall
> slower than the big rock alone because the slower moving lighter rock would
> bog it down, but the tied together object
> ​
> would fall faster than the heavy rock because the new object is heavier
> than the heavy rock alone.
>
>
> Suppose he'd done this with a leaf and a rock.  He'd have found it
> depended on whether they were just tethered together or tightly bound.
>
> Brent
>
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-- 
Alberto.

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