Glossary term: 태양경로(일호)
Description: 태양경로(또는 일호)는 지구의 한 위치에서 하늘을 바라볼 때 태양이 하루 동안 이동하는 모습을 말합니다. 태양은 매일 동쪽에서 떠서 서쪽으로 지는 호를 따라 겉보기 움직임을 보입니다. 춘분과 추분에는 태양이 정확히 동쪽에서 떠서 정확히 서쪽으로 집니다. 하지만 동지에는 태양의 경로가 하늘에서 가장 짧고 낮게 나타납니다. 그 이후부터 태양이 그리는 호의 길이와 낮의 길이는 점점 길어지며, 하지 때에는 가장 높고 긴 호, 그리고 가장 긴 낮에 도달합니다. 그 후에는 반대로 호가 점점 짧아지고 낮의 길이도 줄어들어 다시 동지에 이르면 가장 짧고 낮은 태양경로가 됩니다.
북극권 북쪽이나 남극권 남쪽 지역에서는 태양의 움직임이 조금 다릅니다. 겨울에는 해가 몇 달 동안 뜨지 않아 밤이 계속되고, 여름에는 해가 몇 달 동안 지지 않아 낮이 계속됩니다. 이런 극지방의 낮 동안 태양은 하늘에서 원형으로 움직이며, 지평선을 넘지 않고 낮은 위치에서 한 바퀴 돌기도 합니다.
여러 날 동안의 태양경로를 함께 찍은 사진을 태양그래프(solargraph)라고 부르며, 이는 장시간 노출 사진으로 기록됩니다.
Related Terms:
See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
If you notice a factual or translation error in this glossary term or definition then please get in touch.
In Other Languages
- 아랍어: مسار الشمس (قوس النهار)
- 독일어: Sonnenbahn (Tagbogen)
- 영어: Sun Path (Day Arc)
- 페르시아어: مسیر خورشید (قوس روزانه)
- 프랑스어: Trajectoire du soleil (Arc diurne)
- 이탈리아어: Percorso del sole (arco diurno)
- 중국어 간체: 太阳路径（日弧）
- 중국어 번체: 太陽路徑（日弧）
Related Media
The Last Hour of the Day
Caption: Honorable mention in the 2023 IAU OAE Astrophotography Contest, category of Still images of day arcs of the Sun and Solargraphs.
This image, taken on 2 May 1997 at Lake Scaffaiolo in Italy, masterfully captures the Sun's descent in a sequence of mirrored reflections on the placid waters. Its breathtaking representation of time showcases the serene beauty of the surroundings, and stands as a timeless testament to the fleeting moments of the day’s final hour.
Credit: Fabrizio Melandri/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
Where the Sun Sets Every Month
Caption: Third place winner in the 2023 IAU OAE Astrophotography Contest, category of Still images of sunrise and sunset location over the year.
Taken with a smartphone from San Rafael, Bulacan, Philippines, this series of images capture the changing position of sunset over the year owing to Earth’s axial tilt and orbit around the Sun. From January to December 2022, each image reflects the changing backdrop and position of the Sun at dusk. Observe the changing foliage and the appearance of an electricity pole in October. This collection serves as a visual testament to the celestial dance between Earth and the Sun, and the natural transformations on the ground.
Credit: John Paul Pile/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
The Eclipse Clock-Eclipse on a Polar Day
Caption: First place winner in the 2023 IAU OAE Astrophotography Contest, category of Still images of day arcs of the Sun and Solargraphs.
Constructed by combining multiple images over the course of a 24-hour period, the image was captured in Union Glacier, Antarctica, during the total solar eclipse of 4 December 2021, and showcases the day arc of the Sun. It illustrates the unique phenomenon of a polar day, during which the Sun travels around the sky without setting. During polar days, areas within the polar circles experience 24 hours of continuous daylight, and the Sun doesn’t set for an extended period. The image also offers a rare perspective of a solar eclipse, where the Moon passes between the Sun and Earth, and as viewed from Earth. This can be seen in the lower image of the Sun, where the Moon covers the solar disc.
Credit: Stephanie Ziyi Ye/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
When the Sun Bounces
Caption: First place winner in the 2023 IAU OAE Astrophotography Contest, category of Still images of sunrise and sunset location over the year.
This image was taken at Norway's North Cape. Owing to the latitude of this location, the Sun never truly sets during the summer months, from around April to August. This results in the unique spectacle of continuous daylight, known as a polar day. This captivating series of images, taken in 2022, showcases the Sun's relentless journey across the horizon every 30 minutes. At its lowest point in the sky, the Sun does not set, but appears to bounce off the horizon. The globe on the far right in the photo stands as a sentinel, marking the northernmost point of the European continental mainland.
Credit: Milos Obert/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
The Path of the Sun
Caption: Second place winner in the 2023 IAU OAE Astrophotography Contest, category of Still images of day arcs of the Sun and Solargraphs.
This enchanting image, captured in Germany between 21 June 2018 and 21 December 2018, is a poetic blend of art and science, showcasing nature's rhythm and the passage of time. It combines images taken at different times of day over the course of six months. Each curve tracks the Sun’s path (or arc) across the sky on a particular day. The sweeping arc of the Sun is distorted here by the projection, making it appear like a curve. The position of the daily arc across the sky changes with the Sun’s seasonal movement in the sky. Captured using a simple pinhole camera fashioned from a coffee can, it shows the Sun's journey over the course of six months, and the gradual shift of the daily arc from the summer, when it is higher in the sky, to its lowest arc at the winter solstice. Gaps in the Sun’s path represent days or times of day when the Sun was obscured by clouds. This image is a vivid testament to the changing seasons, revealing the Sun's dance in the sky as days grow shorter or longer.
Credit: Frank Niessen/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
