designer and mechanic. bell and watson experimented with acoustic telegraphy in and . on june , watson accidentally plucked one of the reeds and bell at the receiving end of the wire heard the overtones of the reed, overtones that would be necessary for transmitting speech. this led to the "gallows" sound-powered...
and capturing control method of camera apparatus publication number: abstract: there is provided a camera apparatus including: a capturing unit that includes a lens to which light, from a capturing area including ir light and visible light is incident, and that performs capturing based on the light;...
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industry index or a search engine and keywords. directory of polish exporters directory of transport companies furniture catalog invest in poland offers from foreign companies selected categories: electric and electronic machines and devices manufacture of audio gear, sound electric equipment ( ) back...