From Berlin last week came news that technicians of Siemens & Halske Co. had developed a ''super-microscope" with a magnifying power far surpassing that of ordinary high-grade instruments. To obtain its supermagnification, the German instrument uses beams of electrons instead of waves of light.
In modern physics, beams of light are considered as particles as well as waves, and beams of electrons are considered as waves as well as particles. A microscope using visible illumination is limited in magnifying power by the wave length of light. Particles considerably smaller than the wave length...
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