It is an experiment in which the Joule-Thomson coefficient is measured. Basically, you are expanding a gas under adiabatic conditions to ensure constant enthalpy and you will notice that there will be a temperature change (most likely cooling).
J.J. Thompson
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from his cathode ray tube experiment
J.J. Thompson proved the electron's existence through the cathode ray experiment.
Study of cathode rays by J. J. Thompson and co-workers in 1896.
Benjamin Thompson's experiment, where he showed that metal can be melted by friction produced by boring a cannon, disproved the caloric theory by demonstrating that heat could be produced by mechanical work rather than through the transfer of a mysterious fluid called caloric. This experiment challenged the prevailing understanding of heat as a fluid and supported the emerging kinetic theory of heat.
J. J. Thomson observed that cathod rays are deflected by an electric field - and from this discovered the electron.
J.J Thompson discovered the electron. He also performed the Cathode Ray Tube Experiment and that told him that electrons are negative J.J Thompson discovered the electron. He also performed the Cathode Ray Tube Experiment and that told him that electrons are negative
Thompson's cathode ray experiment led to the discovery of the electron, which was a fundamental particle in the atom. This challenged the earlier model of the atom as a solid, indivisible sphere by proposing a structure of a positively charged sphere with negatively charged electrons embedded within it. Thompson's model contributed to the development of the modern atomic model.
The plum pudding model was first introduced by J.J. Thomson in 1904 in the March edition of the UK's Philosophical Magazine. It was invalidated 5 years after during what is now known as the Rutherford gold foil experiment, an experiment designed to probe the atom.
Thompson observed that these rays are negatively electrically charged.
The address of the Thompson Library Station is: 16700 Thompson Rd, Thompson, 44086 9751