What is Issac Newton famous for
user
He was a physicist.  Can I tell you about what he’s most famous for?
assistant
What were some of the things he discovered
user
He discovered that, well, there are two things he’s most famous for.  One is that the theory of gravitation that he discovered, the Theory of Universal Gravitation.  The other thing is that he discovered the inverse square law, which is that, if you’re trying to calculate something that’s going to happen in the distance, and you know the distance in one direction, then you need to multiply that distance by the distance in the other direction.  He did this in a physics problem called the problem of two bodies orbiting one another, and he used it to calculate the force of gravitation.
assistant
What is Issac Newton famous for
user
He was a physicist.  Can I tell you about what he’s most famous for?
assistant
What were some of the things he discovered
user
He worked on optics, and discovered what we call today the Law of Refraction.  That’s the way light bends when it goes from one medium to another, and the discovery of this law allowed Newton to create powerful telescopes, that could see far into the night sky.
assistant
What is Issac Newton famous for