ionization chamber

noun

Definition of ionization chamber 

: a partially evacuated tube provided with electrodes so that its conductivity due to the ionization of the residual gas reveals the presence of ionizing radiation

First Known Use of ionization chamber

1904, in the meaning defined above

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The first known use of ionization chamber was in 1904

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ionization chamber

noun

Medical Definition of ionization chamber 

: a partially evacuated tube provided with electrodes so that its conductivity due to the ionization of the residual gas reveals the presence of ionizing radiation

More from Merriam-Webster on ionization chamber

Britannica.com: Encyclopedia article about ionization chamber

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