Recent content by ted.hb

Why do we use inertia in rotational motion and not the whole mass of an object ?

I understand that when an electron is excited it goes to a higher energy level and then relaxes to ground state releasing a photon; however, after ionisation of an electron takes place, where does the electron go if it is "removed" from the atom.

Can lenses Magnify? i know that eyeglasses can get the image farther or nearer to fix it on the retina, but can lenses magnify as mirrors can ?