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Version 1.0 updated.
Description [menu]
Cette animation décrit la seconde expérience de J. J. Thomson concernant la déviation d’un faisceau d’électrons dans un tube à vide, nommé tube de Crookes.
Un vide partiel (inférieur à 10-6 atm) est maintenu dans le tube (entre 10 et 100 kV). Une haute tension est appliquée entre deux électrodes. Le champ électrique très intense qui en résulte accélère les quelques ions présent dans le tube qui, par collision, ionisent d’autres particules.
Plus la pression est faible (vide poussé), plus les électrons ainsi libérés et accélérés parcourent de grandes distances jusqu’à frapper l’écran opposé du tube.
En étudiant la déviation de ce faisceau, J. J. Thomson isole en 1897 une nouvelle particule élémentaire portant une charge négative: l’électron.
Ce dispositif constitue le premier accélérateur de particules. Suite à ses travaux, Thomson proposera un tout nouveau modèle atomique (Le plum pudding de Thomson) qu’un de ses élèves, Ernest Rutherford, améliorera 10 ans plus tard.
Cliquer puis faire glisser le curseur pour modifier l'intensité de la tension appliquée entre les plaques.
This animation describes the second experiment JJ Thomson for deflecting an electron beam in a vacuum tube, called Crookes tube.
A partial vacuum (less than 10-6 atm) is maintained in the tube (10 to 100 kV). A high voltage is applied between two electrodes. The resulting intense electrical field accelerates the ions present in a few tube which, by collision, ionise other particles.
More pressure is low (high vacuum), more electrons thus released and accelerated travel great distances to strike opposite the tube screen.
By studying the deflection of this beam, JJ Thomson isolated in 1897 a new elementary particle bearing a negative charge: the electron.
This device is the first particle accelerator. Following his work, Thomson propose a new atomic model (Plum Pudding Thomson) one of his students, Ernest Rutherford, improve 10 years later.
Click and drag the slider to change the intensity of the voltage applied between the plates.
A partial vacuum (less than 10-6 atm) is maintained in the tube (10 to 100 kV). A high voltage is applied between two electrodes. The resulting intense electrical field accelerates the ions present in a few tube which, by collision, ionise other particles.
More pressure is low (high vacuum), more electrons thus released and accelerated travel great distances to strike opposite the tube screen.
By studying the deflection of this beam, JJ Thomson isolated in 1897 a new elementary particle bearing a negative charge: the electron.
This device is the first particle accelerator. Following his work, Thomson propose a new atomic model (Plum Pudding Thomson) one of his students, Ernest Rutherford, improve 10 years later.
Click and drag the slider to change the intensity of the voltage applied between the plates.
How to install Tube de Crookes APK for Android [menu]
Download Tube de Crookes APK file from SameAPK.com, then follow these steps:
Update Phone Settings
- Go to your phone Settings page
- Tap Security or Applications (varies with device)
- Check the Unknown Sources box
- Confirm with OK
Go to Downloads
- Open Downloads on your device by going to My Files or Files
- Tap Install when prompted, the APK file you downloaded will be installed on your device.
How to install Tube de Crookes APK on Windows 7/8/10 or MAC PC? [menu]
Download Tube de Crookes APK file from SameAPK.com to your PC (ex: /Users/xxx/Downloads/), then follow these steps:
Using Emulator:
- Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
