Azərbaycanca
Беларускі
Dansk
Deutsch
Española
Français
Indonesia
Italiana
日本語
Қазақ
Lietuvos
Nederlands
Português
Русский
සිංහල
แบบไทย
Türkçe
Українська
中國人
United State
Afrikaans
මෙම ලිපිය වනාහි Lunar phase ලිපියෙහි ඉංග්‍රීසි භාෂාවේ සිට සිංහල වෙත නොනිමි පරිවර්තනයකි . ඉංග්‍රීසි සහ සිංහල යන භාෂාවන්හි සුදුසු හා ප්‍රමාණවත් පරිචයක් ඇත්නම්, මෙම පරිවර්තනය සම්පූර්ණ කිරීමට ඔබට අවකාශ ඇත. අදාල විෂය පිලිබඳ දැනුවත්නම්, නැවුම් ස්වයං නිර්මාණයක් ලෙස ලිපිය සම්පූර්ණ කිරීමට ඔබට අවකාශ ඇත. |
Lunar phase (or Moon phase) refers to the appearance of the illuminated portion of the Moon as seen by an observer, usually on Earth. The lunar phases vary cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon, and Sun. One half of the lunar surface is always illuminated by the Sun (except during ), and is hence bright, but the portion of the illuminated hemisphere that is visible to an observer can vary from 100% () to 0% (). The boundary between the illuminated and unilluminated hemispheres is called the .
Overview
Lunar phases are the result of looking at the illuminated half of the Moon from different viewing geometries; they are not caused by shadows of the Earth on the Moon that occur during a lunar eclipse. The Moon exhibits different phases as the relative geometry of the Sun, Earth, and Moon change, appearing as a full moon when the Sun and Moon are on opposite sides of the Earth, and as a new moon (also named , as it is not visible at night) when they are on the same side. The phases of full moon and new moon are examples of , which occur when the Earth, Moon, and Sun lie (approximately) in a straight line. The time between two full moons (and between successive occurrences of the same phase) is about 29.53 days (29 days, 12 hours, 44 minutes) on average (hence, the concept of a timeframe of a period of time of an approximated month was derived). This is longer than the it takes the Moon to make one orbit about the Earth with respect to the fixed stars (the ), which is about 27.32 days. This difference is caused by the fact that the Earth-Moon system is orbiting about the Sun at the same time the Moon is orbiting about the Earth. The actual time between two syzygies is variable because the orbit of the Moon is elliptic and subject to various periodic perturbations, which change the velocity of the Moon.
It might be expected that once every month when the Moon passes between Earth and the Sun during a new moon, its shadow would fall on Earth causing a . Likewise, during every full moon, we might expect the Earth's shadow to fall on the Moon, causing a lunar eclipse. We do not observe a solar and lunar eclipse every month because the plane of the Moon's orbit around the Earth is tilted by about 5 degrees with respect to the plane of Earth's orbit around the Sun. Thus, when new and full moons occur, the Moon usually lies to the north or south of a direct line through the Earth and Sun. Although an can only occur when the Moon is either new or full, it must also be positioned very near the intersection of Earth's orbit plane about the Sun and the Moon's orbit plane about the Earth (that is, at one of its ). This happens about twice per year, and so there are between 4 and 7 eclipses in a calendar year. Most of these are quite insignificant; major eclipses of the Moon or Sun are relatively rare.
චන්ද්‍ර කලා නාමකරණය
කාලයත් සමග වෙනස්වන සඳෙහි කලාවන් වල නම් :
| කලාව | ||
|---|---|---|
| 'අමාවක සඳ | අදෘශ්‍යමානයි | අදෘශ්‍යමානයි |
| පෑලවක සඳ | අදෘශ්‍යමානයි, හෝ සඳෙහි පළමු අවස්ථාවයි | |
| Waxing Crescent moon . | දකුණුපසින් 1-49% දෘශ්‍යමානයි | වම්පසින් 1-49% දෘශ්‍යමානයි |
| පුර අටවක සඳ | දකුණුපසින් 50% දෘශ්‍යමානයි | වම්පසින් 50% දෘශ්‍යමානයි |
| Waxing gibbous moon | දකුණුපසින් 51-99% දෘශ්‍යමානයි | වම්පසින් 51-99% දෘශ්‍යමානයි |
| පසළොස්වක සඳ | සම්පුර්ණයෙන්ම දෘශ්‍යමානයි | සම්පුර්ණයෙන්ම දෘශ්‍යමානයි |
| Waning gibbous Moon | වම්පසින් 51-99% දෘශ්‍යමානයි | දකුණුපසින් 51-99% දෘශ්‍යමානයි |
| අව අටවක සඳ | වම්පසින් 50% දෘශ්‍යමානයි | දකුණුපසින් 50% දෘශ්‍යමානයි |
| Waning Crescent Moon | වම්පසින් 1-49% දෘශ්‍යමානයි | දකුණුපසින් 1-49% දෘශ්‍යමානයි |
When the Sun and Moon are aligned on the same side of the Earth, the Moon is "new", and the side of the Moon visible from Earth is not illuminated by the Sun. As the Moon waxes (the amount of illuminated surface as seen from Earth is increasing), the lunar phases progress from new moon, crescent moon, first-quarter moon, gibbous moon and full moon phases, before returning through the gibbous moon, third-quarter moon, crescent moon and new moon phases. The terms old moon and new moon are interchangeable, although new moon is more common. Half moon is often used to mean the first- and third-quarter moons.
When a sphere is illuminated on one hemisphere and viewed from a different angle, the portion of the illuminated area that is visible will have a two-dimensional shape defined by the intersection of an ellipse and circle (where the major axis of the ellipse coincides with a diameter of the circle). If the half-ellipse is convex with respect to the half-circle, then the shape will be gibbous (bulging outwards), whereas if the half-ellipse is concave with respect to the half-circle, then the shape will be a .
In the , if the left side of the Moon is dark then the light part is growing, and the Moon is referred to as waxing (moving towards a full moon). If the right side of the Moon is dark then the light part is shrinking, and the Moon is referred to as waning (moving towards a new moon). Assuming that one is in the northern hemisphere, the right portion of the Moon is the part that is always growing.
දින දසුන
The average calendrical month, which is 1/12 of a year, is about 30.4 days, while the Moon's phase (synodic) cycle repeats every 29.53 days. Therefore the timing of the Moon's phases shifts by an average of about one day for each successive month. If you photographed the Moon's phase every day for a month, starting in the evening after sunset, and repeating approximately 25 minutes later each successive day, ending in the morning before sunrise, you could create a composite image like the example calendar below from May 8, 2005 to June 6, 2005. Note that there is no picture on May 20 since a picture would be taken before midnight on May 19, and after midnight on May 21. For a similar reason, if you look at a calendar listing moon rise or set times, there will be days where the moon neither rises nor sets.
External links
- Virtual Reality Moon Phase
- US Naval Service on Moon Phase 2016-09-30 at the Wayback Machine
- Full Moon Names
- Telescopic moon photos through the phases 2009-02-27 at the Wayback Machine by Michael Myers
- The Moon Below the Equator 2010-02-13 at the Wayback Machine
- Current Moon Phase
- The Length of the Lunar Cycle (numerical integration analysis)
Educational aids
- Starchild: Moonlight Madness Lunar Phases Game
- Quia 3rd Grade SOL 3.8 - Put the Moon's Phases in the Correct Order Game
- Astrophysics Science Project Integrating Research & Education: Lunar Phases 2007-10-11 at the Wayback Machine Quiz
විකිපීඩියාව, විකි, සිංහල, පොත, පොත්, පුස්තකාලය, ලිපිය, කියවන්න, බාගන්න, නොමිලේ, නොමිලේ බාගන්න, mp3, වීඩියෝ, mp4, 3gp, jpg, jpeg, gif, png, පින්තූරය, සංගීතය, ගීතය, චිත්‍රපටය, පොත, ක්‍රීඩාව, ක්‍රීඩා., ජංගම දුරකථන, android, ios, apple, ජංගම දුරකථන, samsung, iphone, xiomi, xiaomi, redmi, honor, oppo, nokia, sonya, mi, පීසී, වෙබ්, පරිගණකය
ම ම ල ප ය වන හ Lunar phase ල ප ය හ ඉ ග ර ස භ ෂ ව ස ට ස හල ව ත න න ම පර වර තනයක ඉ ග ර ස සහ ස හල යන භ ෂ වන හ ස ද ස හ ප රම ණවත පර චයක ඇත නම ම ම පර වර තනය සම ප ර ණ ක ර මට ඔබට අවක ශ ඇත අද ල ව ෂය ප ල බඳ ද න වත නම න ව ම ස වය න ර ම ණයක ල ස ල ප ය සම ප ර ණ ක ර මට ඔබට අවක ශ ඇත Lunar phase or Moon phase refers to the appearance of the illuminated portion of the Moon as seen by an observer usually on Earth The lunar phases vary cyclically as the Moon orbits the Earth according to the changing relative positions of the Earth Moon and Sun One half of the lunar surface is always illuminated by the Sun except during and is hence bright but the portion of the illuminated hemisphere that is visible to an observer can vary from 100 to 0 The boundary between the illuminated and unilluminated hemispheres is called the source source source source source source source source source source The lunar phases and in 2021 as viewed from the Northern Hemisphere at hourly intervals with titles and supplemental graphics source source source source source source source source source source The lunar phases and in 2021 as viewed from the Southern Hemisphere at hourly intervals with titles and supplemental graphicsOverviewThe lunar phase depends on the Moon s position in orbit around the Earth and the Earth s position in orbit around the sun This diagram looks down on Earth from north Earth s rotation and the Moon s orbit are both counter clockwise here Sunlight is coming in from the right as indicated by the yellow arrows From this diagram we can see for example that the full moon will always rise at sunset and that the waning crescent moon is high overhead around 9 00 AM local time Lunar phases are the result of looking at the illuminated half of the Moon from different viewing geometries they are not caused by shadows of the Earth on the Moon that occur during a lunar eclipse The Moon exhibits different phases as the relative geometry of the Sun Earth and Moon change appearing as a full moon when the Sun and Moon are on opposite sides of the Earth and as a new moon also named as it is not visible at night when they are on the same side The phases of full moon and new moon are examples of which occur when the Earth Moon and Sun lie approximately in a straight line The time between two full moons and between successive occurrences of the same phase is about 29 53 days 29 days 12 hours 44 minutes on average hence the concept of a timeframe of a period of time of an approximated month was derived This is longer than the it takes the Moon to make one orbit about the Earth with respect to the fixed stars the which is about 27 32 days This difference is caused by the fact that the Earth Moon system is orbiting about the Sun at the same time the Moon is orbiting about the Earth The actual time between two syzygies is variable because the orbit of the Moon is elliptic and subject to various periodic perturbations which change the velocity of the Moon It might be expected that once every month when the Moon passes between Earth and the Sun during a new moon its shadow would fall on Earth causing a Likewise during every full moon we might expect the Earth s shadow to fall on the Moon causing a lunar eclipse We do not observe a solar and lunar eclipse every month because the plane of the Moon s orbit around the Earth is tilted by about 5 degrees with respect to the plane of Earth s orbit around the Sun Thus when new and full moons occur the Moon usually lies to the north or south of a direct line through the Earth and Sun Although an can only occur when the Moon is either new or full it must also be positioned very near the intersection of Earth s orbit plane about the Sun and the Moon s orbit plane about the Earth that is at one of its This happens about twice per year and so there are between 4 and 7 eclipses in a calendar year Most of these are quite insignificant major eclipses of the Moon or Sun are relatively rare චන ද ර කල න මකරණයක ලයත සමග ව නස වන සඳ හ කල වන වල නම කල ව අම වක සඳ අද ශ යම නය අද ශ යම නය ප ලවක සඳ අද ශ යම නය හ සඳ හ පළම අවස ථ වය Waxing Crescent moon දක ණ පස න 1 49 ද ශ යම නය වම පස න 1 49 ද ශ යම නය ප ර අටවක සඳ දක ණ පස න 50 ද ශ යම නය වම පස න 50 ද ශ යම නය Waxing gibbous moon දක ණ පස න 51 99 ද ශ යම නය වම පස න 51 99 ද ශ යම නය පසළ ස වක සඳ සම ප ර ණය න ම ද ශ යම නය සම ප ර ණය න ම ද ශ යම නය Waning gibbous Moon වම පස න 51 99 ද ශ යම නය දක ණ පස න 51 99 ද ශ යම නය අව අටවක සඳ වම පස න 50 ද ශ යම නය දක ණ පස න 50 ද ශ යම නය Waning Crescent Moon වම පස න 1 49 ද ශ යම නය දක ණ පස න 1 49 ද ශ යම නය සඳ හ කල වන උත තර ර ධග ලයට ද ස වන අය ර න Animation of the Moon as it cycles through its phases as seen from the Northern Hemisphere The apparent wobbling of the Moon is known as When the Sun and Moon are aligned on the same side of the Earth the Moon is new and the side of the Moon visible from Earth is not illuminated by the Sun As the Moon waxes the amount of illuminated surface as seen from Earth is increasing the lunar phases progress from new moon crescent moon first quarter moon gibbous moon and full moon phases before returning through the gibbous moon third quarter moon crescent moon and new moon phases The terms old moon and new moon are interchangeable although new moon is more common Half moon is often used to mean the first and third quarter moons Gibbous red and crescent blue shapes When a sphere is illuminated on one hemisphere and viewed from a different angle the portion of the illuminated area that is visible will have a two dimensional shape defined by the intersection of an ellipse and circle where the major axis of the ellipse coincides with a diameter of the circle If the half ellipse is convex with respect to the half circle then the shape will be gibbous bulging outwards whereas if the half ellipse is concave with respect to the half circle then the shape will be a In the if the left side of the Moon is dark then the light part is growing and the Moon is referred to as waxing moving towards a full moon If the right side of the Moon is dark then the light part is shrinking and the Moon is referred to as waning moving towards a new moon Assuming that one is in the northern hemisphere the right portion of the Moon is the part that is always growing A waxing crescent moon if viewed in the northern hemisphere or a waning crescent moon if viewed in the southern hemisphere ද න දස නThe average calendrical month which is 1 12 of a year is about 30 4 days while the Moon s phase synodic cycle repeats every 29 53 days Therefore the timing of the Moon s phases shifts by an average of about one day for each successive month If you photographed the Moon s phase every day for a month starting in the evening after sunset and repeating approximately 25 minutes later each successive day ending in the morning before sunrise you could create a composite image like the example calendar below from May 8 2005 to June 6 2005 Note that there is no picture on May 20 since a picture would be taken before midnight on May 19 and after midnight on May 21 For a similar reason if you look at a calendar listing moon rise or set times there will be days where the moon neither rises nor sets External linksCategory Lunar phases හ සබ ඳ ම ධ ය ව ක ම ධ ය ක මන ස හ ඇත Virtual Reality Moon Phase US Naval Service on Moon Phase 2016 09 30 at the Wayback Machine Full Moon Names Telescopic moon photos through the phases 2009 02 27 at the Wayback Machine by Michael Myers The Moon Below the Equator 2010 02 13 at the Wayback Machine Current Moon Phase The Length of the Lunar Cycle numerical integration analysis Educational aidsStarchild Moonlight Madness Lunar Phases Game Quia 3rd Grade SOL 3 8 Put the Moon s Phases in the Correct Order Game Astrophysics Science Project Integrating Research amp Education Lunar Phases 2007 10 11 at the Wayback Machine Quiz