Electromagnetic darkroom

Japanese: 電波無響室 - でんぱむきょうしつ(英語表記)electromagnetic darkroom
Electromagnetic darkroom
Also known as an anechoic chamber. It is equivalent to an anechoic chamber for sound and a dark room for light. Usually, radio wave devices such as antennas are designed based on the specifications of what characteristics they will have when placed in an infinitely large space. Therefore, to investigate their characteristics through experiments, a space that is infinitely large in terms of radio waves, that is, a space where there are no reflected radio waves from anything other than the test object, is required. To create such a thing in a finite space, it is sufficient to cover the walls of the finite space with suitable radio wave absorbers.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
電波暗室ともいう。音に対する無響室,光に対する暗室に相当するものである。通常電波機器たとえばアンテナなどの設計は,それが無限に広い空間におかれたときにどのような特性をもつかという仕様によって設計されることが多い。したがってその特性を実験で調べるためには,電波的に無限に広い空間すなわち被試験体以外からは反射の電波がない空間が必要になる。このようなものを有限空間に作るためには,有限空間の壁に相応の電波吸収体を張りめぐらせばよいことになる。

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

<<:  Radio wave fee - denparyou

>>:  Radio telescope - denpaboenkyo (English spelling) radio telescope

Recommend

Italian String Quartet (English: Quartetto Italiano)

This string quartet was formed in Reggio, Norther...

Areotome - That maiden

...This was a festival to invite the god of Kifun...

Giaratoni, G. (English spelling) GiaratoniG

...This clown, wearing a white conical hat and lo...

Government storehouse - Kanko

〘 noun 〙① A government-owned treasury. ※Shoku Niho...

Airglow - Taikikou (English spelling)

It is radiation emitted by atoms and molecules in...

Hidden and unreceived gifts - Hidden and unreceived gifts

...At the time, these were called Naishin or Nais...

Akogiura - Akogiura

A beach between the Iwata River and the Aikawa Ri...

Izumi Shikibu Diary - Izumi Shikibu Diary

A diary from the Heian period. 1 volume. Also kno...

Hypobulia

...When this abnormally increases and one act aft...

Francis Hutcheson

A representative philosopher of the 18th century ...

Pollen allergens

…It is a compound word of the Greek words allos (...

Onnekotan Island - Onekotanto

A volcanic island in the northern part of the Kur...

Vacuum gauge

An instrument for precisely measuring low pressur...

Steel sheet pile - Kouyaita (English spelling)

Steel sheet piles. Used for revetment works at por...

fer-de-lance (English spelling) ferdelance

…49 species are distributed widely in Central and...