<span>It can be inferred from atomic line spectra. These are certain wavelengths of light that atoms give off when they become excited. The energy levels in an atom can be proven to exist from this phenomenon, and furthermore, they can be measured.</span>
<span>If the water faucet is opened, then the amount of water flowing will increase. </span>
862^-10 my friend this is the answer
Gravitational <span>force between them</span>
