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.
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- 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
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