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Na Jenụwarị 5, 1845, onye ozi omenala Prussia natara arịrịọ otu ụmụ okorobịa isii ka ha guzobe otu ọhụrụ Physical Society na Berlin. Na ngalaba sitere na thermodynamics, mechanics, na electromagnetism ruo ọkụ eletrik anụmanụ, ophthalmology, na psychophysics, ndị otu obere ma na-eto eto—nke gụnyere Emil Du Bois-Reymond n'oge na-adịghị anya, Ernst Brücke, Werner Siemens, na Hermann von ...
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