The efficiency of a solar cell is determined as the fraction of incident power which is converted to electricity and is defined as:P max =VOCI SC FF where V oc is the open-circuit voltage;where I sc is the short-circuit current; andwhere FF is the fill factorwhere Î·is the efficiency.
As seen from the Earth, a solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks (occults) the Sun. This can happen only at new moon when the Sun and the Moon are in conjunction as seen from Earth in an alignment referred to as syzygy.
Predictions of solar eclipses. Eclipses do not happen at every new moon, of course. This is because the moonâs orbit is tilted just over 5 degrees relative to Earthâs orbit around the sun. For this reason, the moonâs shadow usually passes either above or below Earth, so a solar eclipse doesnât occur.