Quite simply, the Microwave Oven uses the Microwave part of the spectrum.
-- cooking
-- medical applications
-- radar ranging and imaging
-- communication
I say visible light.
The radio frequency portion of the electromagnetic spectrum uses radio telescopes.
Gateway
Light at 489 nanometers is in the blue area of the spectrum. Use the link below for more information.
Primarily Yellow but really it uses most of the visible spectrum, just some parts more than others. Green plants actually have five type of pigments that serve in photosynthesis. When the leave of the deciduous trees turn in autumn you can see the colours of many of these as they are selectively withdrawn.
The wavelength of the electromagnetic visible to the naked human eye is light. Light has wavelengths of 460 to 760 nanometers.
Visible light
The radio frequency portion of the electromagnetic spectrum uses radio telescopes.
Gateway
The electromagnetic spectrum spans from the lowly radio signals (1x104 Hz) that we use for terrestrial broadcasting to gamma rays (1x1021 Hz) from the sun! ===================
yes, yes they do :p
It is very easy to use!
They just use a harsher light in the electromagnetic spectrum.
Visible light, which lets humans and other animals see, is part of the electromagnetic spectrum. RF (radio frequency) waves are part of the electromagnetic spectrum. RF transmissions carry radio and television broadcasts. They have the lowest frequency. Microwaves are part of the electromagnetic spectrum. X-Rays are part of the electromagnetic spectrum and have the highest frequency..
Light at 489 nanometers is in the blue area of the spectrum. Use the link below for more information.
A spectroscope is used to measure properties of light over a specific portion of the electromagnetic spectrum.
The HST uses EM waves to find things through echolocation or firing a beam of EM waves (or sound) at objects and seeing what a planet or star has done to change the light. Ultrasound works this way.
It uses radio waves between the range of 2.402 and 2.480 GHz