Why wave with lower frequency produce heat?

[Clara Chung]

why wave with lower frequency produce heat? please explain to me

 

[davenn]

why wave with lower frequency produce heat? please explain to me

that's not necessarily true, consider a microwave oven or even higher frequency, infrared radiation
so please elaborate on what specifically you are referring to ?

Dave

 

[Clara Chung]

that's not necessarily true, consider a microwave oven or even higher frequency, infrared radiation
so please elaborate on what specifically you are referring to ?

Dave

In my book, it says we can use a blackened thermometer to detect the radiation just outside the red end of the visible spectrum. I don't understand why only fluorescent materials can detect radiation just outside the violet end of the visible spectrum but not blackened thermometer just like the waves with lower frequency. i.e. why won't the energy in higher frequency waves releases as heat

 

[Dale]

In my book, it says we can use a blackened thermometer to detect the radiation just outside the red end of the visible spectrum. I don't understand why only fluorescent materials can detect radiation just outside the violet end of the visible spectrum but not blackened thermometer just like the waves with lower frequency. i.e. why won't the energy in higher frequency waves releases as heat

You can use a blackened thermometer to detect ultraviolet radiation too. A blackbody absorbs all incoming radiation, regardless of wavelength and then emits blackbody radiation characteristic of its temperature.

A blackened thermometer won't distinguish between infrared or ultraviolet.