Recent content by Robin Andrews

Thanks A.T. I seem to remember something about electromagnetic repulsion at the atomic level in this connection. My understanding is very vague though - is it that the electrons of the atoms in my foot are repelled by the electrons of the atoms in the floor if I'm standing still? And is it the...

This may seem like a really basic question (I'm teaching lower school science, and it's not my specialism!), but: What causes the force which balances gravity, which I think is called "ground reaction force?" All the descriptions I've seen say that the ground "pushes" up on a stationary...