Bubble chamber

A bubble chamber is a vessel filled with a superheated transparent liquid (most often liquid hydrogen) used to detect electrically charged particles moving through it. It was invented in 1952 by Donald A. Glaser, for which he was awarded the 1960 Nobel Prize in Physics.Anecdotally, Glaser was inspired by the bubbles in a glass of beer; however, in a 2006 talk, he refuted this story [1], saying that although beer was not the inspiration for the bubble chamber, he did experiment with using beer to fill early prototypes.
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Noun
1. an instrument that records the tracks of ionizing particles
(hypernym) measuring instrument, measuring system, measuring device

An instrument which can record the passage of high energy particles because of the ionisation they cause to the atoms or molecules of, for example, liquid hydrogen or helium, contained in the bubble chamber. As the high energy particles ionise the atoms they strike, energy is released which causes local boiling of the superheated liquid. This produces bubbles which show the path that the particle has taken. The tracks of bubbles are photographed and analysed. Their characteristics can reveal which particles created them, often together with their mass, momentum and charge.

CAMERA A BOLLE

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