The International System of Units (SI) unit of illuminance. The symbol is lx. It is one of the SI derived units that is expressed with a specific name and symbol. It refers to the illuminance of a surface when a luminous flux of 1 lumen is uniformly distributed over an area of 1 square meter. It was adopted in Germany in 1897 and was also called the metric candle. The unit of illuminance in the imperial system is 1 lumen per square foot, or foot-candle, which is equivalent to 10.764 lux. [Koizumi Kesakatsu and Imai Hidetaka] [Reference item] | | |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
国際単位系(SI)の照度の単位。記号はlx。固有の名称と記号で表されるSI組立単位の一つ。1平方メートルの面積に、1ルーメンの光束が一様に分布しているときの表面の照度をいう。1897年ドイツで採用され、メートル燭(しょく)ともよばれた。ヤード・ポンド法の照度の単位は1ルーメン毎平方フート、すなわちフート・キャンドルで、10.764ルクスにあたる。 [小泉袈裟勝・今井秀孝] [参照項目] | | |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
<<: Luxembourg (English spelling)
...The phenomenon in which gas (usually air) in t...
A bird of the family Loonidae, order Loon. Length ...
…From this point on, prehistoric archaeology deve...
...There are many different types of banks, and t...
...Volume 1 covers general topics such as chemica...
→ Buttercup Source : Heibonsha Encyclopedia About ...
…A river that flows through Switzerland and Italy...
〘noun〙① Poor food. Coarse food. Akushoku. ※Social ...
An old town in Yoshiki District, Yamaguchi Prefect...
...The spirit of boycotting all theaters that had...
Please see the "Gloriosa" page. Source:...
204 koro-249 Roman Emperor. Reigned 244-249. Born ...
Born: April 10, 1892, Jerzytsby, Posen Died Decemb...
?-1227 She was the wet nurse of Minamoto no Sanet...
...The name first appears in documents from the b...