Match the correct description to each scientist.
After choosing your best answer, click on the arrow and take a moment to investigate the accompanying hyperlinked pages where each important discovery or experiment is described in greater detail.


 experimentally discovered the charge to mass ratio of cathode rays
 experimentally discovered the neutron
 experimentally confirmed that the fundamental electric charge (e) was quantized
 experimentally verified the existence of matter waves
 explained the photoelectric effect
 proposed that blackbody radiators emit quantized energy
 developed the planetary atomic model to explain atomic spectra
 experimentally confirmed that complicated atoms also have discreet energy levels
 quantified the uncertainty of a particle's instantaneous position vs its momentum
 developed a mathematical relationship relating the frequencies of spectral lines
 determined that particles have a wave nature
 experimentally verified that photons have momentum
 experimentally discovered the existence of the atomic nucleus
 explained the incompressibility of atoms
 experimentally established that the speed of light is an invariant


