re what is zero db in article apr bnr ca moffatt bnr ca john thomson writes joseph chiu josephc cco caltech edu wrote thus a decibell deci l tenth of bell is a fractional part of the original bell for example southwestern bell is a decibell out of what hat did you pull this one db is a ratio not an rboc and the measure of current amp is actually named after both the amp company and the amphenol company both companies revolutionized electronics by simulatenously realizing that the performance of connectors and sockets were affected by the amount of current running through the wires sorry the unit for current is the ampere which is the name of a french man named ampere who studied electrical current the term amp is just an abbreviation of it the company amp came after the ampere unit was already in use the ohmite company was the first to characterize resistances by numbers thus our use of the ohms i don t know about this one but it doesn t sound right alexander graham bell actually is where bell came from well you got one thing right actually i think j chiu knows the score and is just being silly however decibel is in fact th of a bel he is right on that one but i don t know if it was accidental or not strictly defined a bel is the ratio of the log of two power levels and a decibel is th of a bel so you have x decibels for every bel hence bel log p p and decibel xlog p p the bel ohm volt farad ampere watt hertz henry etc are all named for pioneers in the field it s a traditional and fine way to honor researchers who discover new knowledge in a new field hertz was one of the most important of the early electronics explorers but had been left out in having a term or unit named after him until recently s prior to that what is now a hertz was a cps all the other units were defined many decades earlier
