Re: BE ALERT to short sharp stabbing pains in head!! Lucky, The reason they are suggesting an mri is for 2 reasons. The first being mris are alot more detailed than cat scans and can show things that cat scans cannot. Second they do it to cover their butts.
Quick Answer. Physicist Ernst Ruska and German engineer Max Knoll are credited with creating the first electron microscope in 1932. It permitted researchers greater magnification and resolution than traditional light microscopes.
Thompson is famous for discovering the electron and he did through a series of experiments. He knew that is an electric current was passed through a vacuum tube, small glowing particles could be seen. He interpreted that the glowing stream bent toward a positively charged plate.