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A cloud chamber, also known as a Wilson cloud chamber, is a particle detector used for visualizing the passage of ionizing radiation. A cloud chamber consists of a sealed environment containing a supersaturated vapor of water or alcohol .
Looking into a cloud chamber you see the tracks of electrically charged particles as they pass through the chamber. The space inside the chamber is filled with alcohol vapour and, as a particle passes through, tiny droplets of alcohol form, showing up its track.
21 gen 2015 · This natural radiation is harmless and invisible, but the tracks that the particles leave behind can be seen using a cloud chamber. Over the years, several experiments at CERN have used cloud chambers to detect particles.
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A cloud chamber makes the invisible visible, allowing us to see delicate, wispy proof that there are tiny particles whose story starts in outer space shooting through all of us, every minute of every day.
A cloud chamber contains alcohol vapor at the edge of precipitation. Ionizing radiation can trigger condensation and produce visible tracks. Ionizing radiation produces enough energy to ionize atoms in matter and break chemical bonds. Alpha particles are helium nuclei, ionized with a +2 charge.
Cloud chamber, radiation detector, originally developed between 1896 and 1912 by the Scottish physicist C.T.R. Wilson, that has as the detecting medium a supersaturated vapour that condenses to tiny liquid droplets around ions produced by the passage of energetic charged particles, such as alpha.
