What, or when, would aliens see, if they looked at the earth?

# Answers to Physics Questions

Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...

Delving into the quantum jelly

Understanding denature of the question...

Is there a tipping point for classical physics?

A charged issue...

What's the point if one side faces the wall?

And the special silk with air conditioning properties...

Can you grow an infinitely dense dot?

Why is this the limit?

And what are the optics involved?

Would gravity or mirrors be your best bet?

The coincidences we observe and the ones we often don't...

What are the theoretical limits of time travel?

Maths for maths' sake or something more...

The flow of electrons can take different forms...

A tea time teaser for you...

What do these ripples in space time mean for us?

Well, it depends what you mean by nothing...

When do the rules of gravity kick in...

The rate at which atoms in the air are bumping into each other...

And what's the potential for profit...

How can weather services know when lightning strikes occur?

And do we need to change the temperature...

Are we too tough on them...

Is it as much about translation as maths ability...