|
Moonlight is the light that reaches Earth from the Moon, consisting mostly of sunlight, with some starlight and earthlight reflected from those portions of its surface which the Sun's light strikes. == Illumination == The intensity of moonlight varies greatly depending on the lunar cycle but even the full Moon typically provides only about 0.1 lux illumination. When the Moon is viewed at high altitude at tropical latitudes, the illuminance can reach 0.26 lux. The full Moon is about 1,000,000 times fainter than the Sun. The color of moonlight, particularly near full Moon, appears bluish to the human eye compared to most artificial light sources. This is because of the Purkinje effect - the light is not actually tinted blue, and although moonlight is often referred to as "silvery" it has no inherent silvery quality. The Moon's albedo is 0.136, meaning only 13.6% of sunlight incident on the Moon is reflected. Moonlight generally hampers astronomical viewing, so astronomers usually avoid making observations near full Moon. File:Sunrise over the VLT.jpg|Moonlight over the VLT File:Tonsvatnet, tåke og måne.JPG|Moonlight illuminates a lake and surroundings on the Earth File:Giftedtypist - red moon (by).jpg|Moon colored red by an eclipse File:Earthshine Moon.jpg|Left side lit by the Earth, other side by the Sun File:High ISO with long exposure.jpg|With the right manipulation, moonlight doesn't appear that much different from sunlight. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「moonlight」の詳細全文を読む スポンサード リンク
|