Impact printer..
"strikes a ribbon against the paper to produce character image"
"strikes a ribbon against the paper to produce character image"
Tuesday 13 September 2011
what generates a light beam at a specific visible frequency?
what generates a light beam at a specific visible frequency?
"Laser"
"Laser"
what is the frequency limit of an optical fiber?
what is the frequency limit of an optical fiber?
"40 GHz"
"40 GHz"
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