- #1
aster79
- 4
- 0
"Bottom" limit of telescopes
I know this is a very elementary question, but I was never quite able understand why there was a bottom limit to what telescopes could "see". For example, I have not quite been able to grasp why telescopes can only see in the radio, but are invisible to optical rays, considering that they are large enough to be able to resolve objects emitting light at radio wavelengths. I understand why there is an upper limit to the wavelengths a telescope is able to "see" at, but for some reason I can't understand why there is a lower limit as well.
I know this is a very elementary question, but I was never quite able understand why there was a bottom limit to what telescopes could "see". For example, I have not quite been able to grasp why telescopes can only see in the radio, but are invisible to optical rays, considering that they are large enough to be able to resolve objects emitting light at radio wavelengths. I understand why there is an upper limit to the wavelengths a telescope is able to "see" at, but for some reason I can't understand why there is a lower limit as well.