(September 18, 2022 at 5:35 pm)BrianSoddingBoru4 Wrote:(September 18, 2022 at 4:56 pm)Anomalocaris Wrote: in astronomy any electromagnetic energy emitted counts as brightness.
That doesn’t appear to be the case.
Boru
No, it is actually the case.
It is typical, for example, to talk about the brightness of a radio emission or an x-ray emission.
Brightess is usually considered to be equivalent to luminosity.
