IAM wrote on 20/06/2018 8:58 AM:
On Tuesday, June 19, 2018 at 2:27:18 AM UTC-7, Daniel60 wrote:
Herbert Glazier wrote on 19/06/2018 7:24 AM:
Radio waves miles long.Neutrino wave fits inside an electron.Bert

No, Radio Waves are not "miles long"!

As I previously posted back on about 12th May ....
Mains Power wave (50Hz or so) are about 6,000kms/3,500miles long.
Audio Freqs of, say 1kHz, are 300km/200miles long.
HF Radio wave, say 1MHz, are 300mtrs/0.2miles long.
FM radio stations (approx 100MHz) have a 3mtr/10foot long wavelength.
Microwave frequencies, say 3GHz, have a wavelength of 100mm/4 inches long!

So the longest Radio Waves (about 300kHz and up) are only about half a
mile long at the longest ... Not "miles long"!!

are mains power light freq black? Radio produces red, long wave formats. ?

Light wavelengths do fall under the "Radio wavelength" broad heading but
very, very, high in frequency!! e.g. ....

Red 400 - 484 THz
Orange 484 - 508 THz
Yellow 508 - 526 THz
Green 526 - 606 THz
Blue 606 - 668 THz
Violet 668 - 789 THz

Note: THz is Terahertz, i.e. One Million Million Hertz (10^12 Hz)

Ref: https://en.wikipedia.org/wiki/Visible_spectrum
https://en.wikipedia.org/wiki/Electromagnetic_spectrum

--
Daniel