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Physics, Astronomy & Cosmology / Re: Is there a net heat exchange between water and ice at 0 degree C?
« on: 08/06/2022 21:39:20 »
It's not how well tested the laws of thermodynamics are that matters here.
Again, it's Galileo dropping things off a tower.
He did not need to do the experiment.
He knew that the light thing and the heavy thing had to fall at the same speed- because he had considered what would happen if you tied a heavy ball to a light ball and dropped both.
The combined "thing" consisting of the two balls would obviously weigh more than the constituents.
So, if Aristotle had been right, the combination would fall faster than the heavy ball.
And the light ball would fall more slowly.
But how could the combined thing fall faster then the heavy ball when the light ball was trying to fall slower?
It's impossible.
Galileo knew that.
He only did the experiment for the benefit of the local dignitaries who were not clever enough to understand the logic.
Now we are looking at the laws of thermodynamics, rather than falling objects.
But, like Galileo, we have the advantage of a deep understanding.
We have known for a hundred years or so that momentum, angular momentum and energy are conserved.
We don't rely on experiments to know this.
We have a mathematical proof.
https://en.wikipedia.org/wiki/Noether%27s_theorem
And yet, we still have hamdani yusuf saying that, because he can't do a proper experiment, he doesn't believe it.
He refuses to learn, or even accept the science.
You can lead a horse to water, but you can't make it drink.
He is even less well informed that those local busybodies for whom Galilei had to climb the tower and drop stuff.
Again, it's Galileo dropping things off a tower.
He did not need to do the experiment.
He knew that the light thing and the heavy thing had to fall at the same speed- because he had considered what would happen if you tied a heavy ball to a light ball and dropped both.
The combined "thing" consisting of the two balls would obviously weigh more than the constituents.
So, if Aristotle had been right, the combination would fall faster than the heavy ball.
And the light ball would fall more slowly.
But how could the combined thing fall faster then the heavy ball when the light ball was trying to fall slower?
It's impossible.
Galileo knew that.
He only did the experiment for the benefit of the local dignitaries who were not clever enough to understand the logic.
Now we are looking at the laws of thermodynamics, rather than falling objects.
But, like Galileo, we have the advantage of a deep understanding.
We have known for a hundred years or so that momentum, angular momentum and energy are conserved.
We don't rely on experiments to know this.
We have a mathematical proof.
https://en.wikipedia.org/wiki/Noether%27s_theorem
And yet, we still have hamdani yusuf saying that, because he can't do a proper experiment, he doesn't believe it.
He refuses to learn, or even accept the science.
You can lead a horse to water, but you can't make it drink.
He is even less well informed that those local busybodies for whom Galilei had to climb the tower and drop stuff.
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