Can we make micro wave without electric current?

[alpha2cen]

Let us think about electromagnetic wave.

very high temperature-----> UV emission

high temperature-----------> visible light emission

room temperature ---------> IR emission

low temperature------------>micro wave emission??

If not, what is the problem?

Edited February 6, 2011 by alpha2cen

[John Cuthber]

Everything that you see around you is emitting microwaves.

Even hot things, as well as emitting light, give of microwaves; in fact they give off more than cool things do.

[ajb]

Use Wien's displacement law to calculate the temperature that corresponds to the peak wavelength in the microwave band of a blackbody. Let us know what temperature you get.

[alpha2cen]

Then, Do at the more low temperature objects emit radio waves, too?

According to Wien's displacement law, we correct above statement.

Edited February 6, 2011 by alpha2cen

[insane_alien]

Then, Do at the more low temperature objects emit radio waves, too?

 

all black(even gall grey) body emitters emit at all wavelengths. the temperature only affects the proportion.