Are there frequency's below Hz? What is the highest known frequency in the specturm and where is it generated from?
2006-10-25 06:07:30 · 3 answers · asked by Bmc420 3 in Science & Mathematics ➔ Physics
Hz stands for Hertz, a measure of frequency, in cycles per second. The human audible spectrum is about 20Hz to 20kHz. The human visual spectrum is about 400 to 700 THz. Photons have been produced at 10^24 Hz. On the slow end, the sunspot cycle of 22 years has a frequency of 1.4*10^-9 Hz. You could calculate the frequency of the expansion/contraction of the universe, given that the period is (by current estimates) at least 60 billion years. Any frequency you can imagine can be expressed in units of Hertz.
2006-10-25 10:57:33 · answer #1 · answered by Frank N 7 · 1⤊ 0⤋
The navy uses 15 to 30 kHz. Not Hz There's not much on electromagnetics below a few kilohertz because of the problem picking them up. A quarter wave antenna for 10 Hz would have to be almost 5,000 miles long.
The highest frequencies are gamma rays, made in nature by supernovas, neutron stars merging and black holes eating too much. People make them with nuclear bombs, some accelerators and in Marvel comics.
2006-10-25 17:54:23 · answer #2 · answered by Nomadd 7 · 0⤊ 0⤋
Guess not. I can't find any information below 3Hz.
Extremely low frequency (ELF) is the band of radio frequencies from 3 to 30 Hz. ELF was used by the US Navy and Soviet/Russian Navy to communicate with submerged submarines.
2006-10-25 15:34:47 · answer #3 · answered by MЯ BAIT™ 6 · 0⤊ 0⤋