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## Main Question or Discussion Point

a Newton's law states that : F=m.a , but I realize that it belongs to our sense , but may be someone know more about this . if you have any explaination or proof , let me know :)

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a Newton's law states that : F=m.a , but I realize that it belongs to our sense , but may be someone know more about this . if you have any explaination or proof , let me know :)

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Forget about Newton's laws. Think about how you "prove" anything in science!a Newton's law states that : F=m.a , but I realize that it belongs to our sense , but may be someone know more about this . if you have any explaination or proof , let me know :)

There is no such thing as "proof" as rigorous as that in mathematics, i.e. a logical proof. There are such a thing as "valid" evidence! The fact that your house still stands is an evidence for the validity of Newton's laws. The fact that we can actually map and predict the location of celestical bodies (i.e. we shoot a space capsule here on earth, and months and years later, actually reach a planet that wasn't at that location months and years earlier) is another evidence for the validity of Newton's laws.

Zz.

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haushofer

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Ofcourse you can. Just say that gravity is entropic.

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What this guy said.Forget about Newton's laws. Think about how you "prove" anything in science!

There is no such thing as "proof" as rigorous as that in mathematics, i.e. a logical proof. There are such a thing as "valid" evidence! The fact that your house still stands is an evidence for the validity of Newton's laws. The fact that we can actually map and predict the location of celestical bodies (i.e. we shoot a space capsule here on earth, and months and years later, actually reach a planet that wasn't at that location months and years earlier) is another evidence for the validity of Newton's laws.

Zz.

In logic,

there are direct proofs (if a goes to b and b goes to c then a goes to c),

proofs by contradiction (you assume the opposite of what you want to prove, then work to find the contradiction in that),

and proofs by induction (Tricky to explain in a single line. look this one up.)

You can look those up.

The types of proof that are not valid that are constantly used are:

Proof by superiority = "The King said the sun is blue.. so the sun is blue." The story of "the emporer has no clothes" is a story that attempts to explain to children that this is not proof.

Proof by Precident.

"We have been doing this for 25 years this way... "

It could have been wrong for 25 years... or incomplete, but if that is all you knew, then thats all you knew.

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Vanadium 50

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Ever seen a spring scale?Can you measure force? Well, if you can measure mass and if you can measure the acceleration then you can measure the force. Otherwise I don’t think you can.

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