X-ray unit - X-ray unit (English spelling)

Japanese: X線単位 - エックスせんたんい(英語表記)X unit
X-ray unit - X-ray unit (English spelling)
A unit of length used in the past to express the wavelength of X-rays and other rays. 1 X-ray unit ≒ 1.002× 10-13 m. The symbol is X or XU in English, and XE in German. The cleavage spacing of rock salt was first calculated using Avogadro's number as 2.814× 10-8 Å, but was changed to 2814.00 X-ray units. This resulted in a slight difference, mainly due to Avogadro's number, and led to the distinction between Å and 103 X-ray units. It is defined as 1/3029.45 of the cleavage spacing of calcite at 18°C.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
X線などの波長を表すのに過去において使われた長さの単位。1X線単位≒1.002×10-13m。記号は英語でX,XU,ドイツ語でX.E.など。最初にアボガドロ数を使って岩塩のへき開面間隔を2.814×10-8Åと計算されているのを2814.00X線単位としたため,おもにアボガドロ数に起因するわずかの違いがでて,Åと103X線単位とは区別されるようになった。定義は18℃の方解石のへき開面間隔の1/3029.45。

出典 株式会社平凡社世界大百科事典 第2版について 情報

<<:  X-ray inspection - X-ray inspection

>>:  X-Ray Star - X-Sensei

Recommend

Mr. Aihara

There are various branches of samurai who were act...

Jin-yi-wei; Chin-i-wei

One of the imperial guards of the Ming Dynasty in ...

Rummindei

...The ruins were excavated by A. Fuller in 1896,...

Atlanta - Atlanta (English spelling)

The capital of Georgia, located in the northwest ...

Paraguay - Paraguay (English spelling)

It is a landlocked country located almost in the ...

Philipon, C. (English spelling) Philipon C

…It ran from 1832 to 1893. It was published by th...

Freezing rain - Uhyoh

Raindrops that are supercooled near or below free...

Yonago Plain - Yonagohei

A plain in the lower reaches of the Hino River in...

Hinagu [Hot Spring] - Hinagu

A hot spring facing the Yatsushiro Sea in Yatsushi...

Wayang Topeng (English spelling) Wayang Topeng

…Wayang goreh in Western Java is still popular to...

Miyagi [Village] - Miyagi

A village in Seta County, central Gunma Prefecture...

Anthracosauria

…Some species, such as Gerrothorax , had external...

Person's name - jinmei

An individual's given name. In Japan, a person...

Kopp, HFM (English spelling) KoppHFM

…In 1829, he became professor of mineralogy and p...

Hosta albomarginata (English spelling)

… [Noboru Fujita]. … *Some of the terminology tha...