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Alexander Graham Bell.
No, Alexander Graham Bell, a Canadian, did in the year 1876.
Decibel:a unit used to express the intensity of a sound wave, equal to 20 times the common logarithm of the ratio of the pressure produced by the sound wave to a reference pressure, usually 0.0002 microbar.1928, coined from L. decibus "tenth," from decem "ten" + bel unit for measuring sound, after Alexander Graham Bell.
In his experiments on telephony, Alexander Graham Bell needed a scale to describe the effects of apparent poudness. He decided that a sound increase of 1 Bel is the increase that sounds twice as loud to an average person. For simplicity, this is divided into ten decibels. He named the unit.
The decibel scale was originally used to quantify signal loss in a telephone circuit. The original unit, bel, was named in honor of Alexander Graham Bell. The decibel was devised by the Bell Telephone Laboratories in the 1920's.
Alexander Graham Bell
Alexander graham bell, i think he was Canadian though
metal detector
Alexander graham bell
the computer
if you mean the inventor it was Alexander Graham bell
Alexander graham bell was not handicapped
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Alexander Graham Bell was the first person to invent a "telephone", converting sound into an analog electrical signal, transmitting it along a conductive wire, and then recreating the original sound in a speaker.
Alexander Graham Bell worked with Thomas Watson on the telephone. The telephone was Alexander Graham Bell's idea.
Alexander graham bell , invited the telephone in 1875
Alexander Graham Bell invented the telephone.