Which healthy snack can provide protein after physical activity?
an orange
Parallax angles of less than 0.01 arcsec are very difficult to measure from Earth because of the effects of the Earth's atmosphere. This limits Earth based telescopes to measuring the distances to stars about 1/0.01 or 100 parsecs away.
The energy of a single photon is given by

where

is the Planck constant
f is the frequency of the wave (of the photon)
In our problem, the radio wave has a frequency of

, so if we put this value into the previous formula, we can find the energy of a single photon of this electromagnetic wave:
<span>Erwin Schrödinger was the one who created the electron cloud model </span>