幻月 拍攝于俄勒岡州海岸擁抱點瀑布的幻月 當(dāng)天空晴朗，月亮低掛在地平線上時，你有時會發(fā)現(xiàn)它周圍有一個光環(huán)，就像這張照片中從俄勒岡州海岸的Hug Point Falls拍攝到的那樣。有時在這個光環(huán)中，你也會看到一個亮點，看起來像是第二個月亮。不，這不是月球上失散已久的孿生行星，而是一種光學(xué)現(xiàn)象，被稱為paraselene，通常被稱為月亮狗或幻月。當(dāng)真正的月亮至少有四分之一可見時，這種“假”月亮就會出現(xiàn)，并且亮度足以使其光線折射出漂浮在大氣層中的六邊形板狀冰晶。幻月更常見于冬季，那時冰晶在冬季更為普遍云朵。太陽在月球上相當(dāng)于幻月，也被稱為太陽近日點，兩者都是一種相關(guān)的光學(xué)現(xiàn)象，稱為22度光暈。像這樣的光暈也是由大氣中的晶體折射引起的，以其22度的視半徑命名，即在月球和太陽外約10倍的直徑。一個22度的光環(huán)據(jù)說每年可以看到100次，比彩虹更常見。

原文:

When the sky is clear, and the moon hangs low in the horizon, you can sometimes spot a halo around it, like the one captured in this image from Hug Point Falls on the Oregon coast. And sometimes within that halo, you may also see a bright spot that appears to be a second moon. No, it's not the moon's long-lost twin, but an optical phenomenon called a paraselene, more commonly referred to as a moon dog or mock moon. This 'false' moon can appear when the real moon is at least a quarter visible and is bright enough for its light to refract off hexagonal-plate-shaped ice crystals floating in the atmosphere. Moon dogs are more commonly seen in winter months, when the ice crystals are more prevalent in the clouds.The moon dog is the lunar equivalent of a sun dog, also known as a parhelion, and both appear as part of a related optical phenomenon called a 22-degree halo. Halos like these are also caused by crystal refraction in the atmosphere, and named for their apparent radius of 22 degrees, or about 10 diameters outside the moon and sun. A 22-degree halo is said to be visible up to 100 times per year, much more common than a rainbow.

高清下載:

https://www.todaybing.com/download/hd?id=w8UYN6Rk

手機壁紙下載:

https://www.todaybing.com/download/mbhd?id=w8UYN6Rk ? ??

4K+原圖下載:

https://www.todaybing.com/detail/w8UYN6Rk.html

來源:

必應(yīng)壁紙

注：官網(wǎng)壁紙投稿已開放。