The phase of the moon that appears completely dark when observed from Earth is the new moon. When it is completely bright, it is the full moon.
It is between the Sun and the Earth.
No, the position of the Moon and the Sun as OBSERVED from the Earth.
It appears completely dark during the new moon phase.
The New Moon
The moon has moved eastward in its orbit from the new moon phase and forms a 90 angle with the sun and earth, and the moon appears half bright and half dark.
That phase is called new moon. Moon may also be unobservable during lunar eclipse - it can only occur at full moon, because Moon has to be in line with Sun and Earth, behind Earth.
No, the position of the Moon and the Sun as OBSERVED from the Earth.
It appears completely dark during the new moon phase.
When there is no visibile moon it is called 'New Moon'.
The New Moon
The moon phase "waning gibbous" appears after the moon phase "full moon".It becomes the "last quarter" or "third quarter" when the lighted part is exactly 50%of the side facing the Earth.
The moon has moved eastward in its orbit from the new moon phase and forms a 90 angle with the sun and earth, and the moon appears half bright and half dark.
That phase is called new moon. Moon may also be unobservable during lunar eclipse - it can only occur at full moon, because Moon has to be in line with Sun and Earth, behind Earth.
crescent
A phase rotation meter. Or a small three phase motor can be wired up and its rotation observed.
You can't have a three phase earth fault, you can have a phase to phase or a phase to earth fault. If you want the potential phase to earth fault current it will be your voltage times your impedance. If you want the phase to phase potential fault current then you should just double the above result.
The moon changes phases as it orbits the Earth. The phase is due to the varying shadow that the Earth casts on the surface of the moon. When the Earth completely blocks the Sun, it is a new moon.
M [mitosis]-phase follows both Growth-phase 1 and [dna synthesis] S-phase; the transition between S-phase and M-phase involves the condensation of chromatin into chromosomes, and what is frequently observed is the movement, translocation, separation [division] and migration of the two sets of chromosomes to the two Cellular/nuclear 'poles'. This is very quickly followed by Cellular binary fission.