Half Moon or First Quarter Moon Explained

In today’s world, each and everyone is quite aware of the fact that Moon Is The Natural Satellite Of The Earth and it does not emit light of its own. In fact, The Sun lits the moon as well as the Earth. The moon revolves around the Earth in approximately 29.62 days which is known as a Synodic Month or Lunar Month. Every day we observe the changing size of the moon which is scientifically known as the Phases Of The Moon or Lunar Phases Of The Moon.

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Right Hand 50% Of Moon Visible From Northern Hemisphere
Credit: Google Sites
The First Quarter Moon is the second primary phase of the moon. This lunar phase of the moon generally occurs one week or approximately 7.4 days after The New Moon Day. As seen from the above picture, this lunar phase is also known as Half Moon. During the first quarter moon or Half Moon Phase Of The Moon, exactly 50 % of the Lunar Surface is illuminated (right half from the Northern Hemisphere and left half from the Southern Hemisphere). People sometimes get confused that why this lunar phase of the moon is called The First quarter moon? well, I would say that this name comes from the geometry of the planets and stars rather than the appearance of the moon.
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8 Lunar Phases Of Moon – From New Moon To Full Moon To New Moon
Credit: WikiHow
First Quarter Moon means that the moon is one-fourth of the way around the Earth; hence the name “First Quarter Moon”. At this point, the moon is exactly at a 90-degree angle with the Sun, as seen from the Earth (see above picture). This lunar phase repeats itself after 29.62 days. Apart from the first quarter moon, in total There are 8 Lunar Phases Of The Moon that occurs at a specific location on the Moon’s Orbit. Technically, The Lunar Month can be divided into 4 Primary Phases that are:- New Moon, First Quarter Moon, Full Moon, Last Quarter Moon; and 4 Secondary Phases that are:- Waxing Crescent Moon, Waxing Gibbous Moon, Waning Gibbous Moon, and Waning Crescent Moon.

 

see also, Full Moon Calendar 2020 | Full Moon Dates 2020 | Full Moon Names 2020

I am a mechanical engineer by profession. Just because of my love for fundamental physics, I switched my carrier, and therefore I just completed my postgraduate degree in physics. Right now I am a loner (as like ever) and a Physics blogger too. My sole future goal is to do a Ph.D. in theoretical physics, especially in the field of cosmology. Because in my view, every part of physics comes within the range of cosmology. And I love traveling, especially the Sole one.

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