Gas in cathode-ray experiment?

  • Thread starter satrohraj
  • Start date
  • #1
12
0

Main Question or Discussion Point

Which gas is used in cathode ray experiment by J.J. Thomson & Sir William?

The voltage they used was about: 15k-20k V
The pressure they used: < 0.1mm of Hg
The gas they used: ?
 

Answers and Replies

  • #2
Astronuc
Staff Emeritus
Science Advisor
18,756
1,825
Apparently different gases were tried in cathode ray tubes at the time.

However based on the fact that Thompson used an evacuated tube (0.1 mmHg vs 1 atmosphere or 760 mmHg), the I would expect the gas was air.

http://www.aip.org/history/electron/jj1897.htm
 
  • #3
22
0
Apparently different gases were tried in cathode ray tubes at the time.

However based on the fact that Thompson used an evacuated tube (0.1 mmHg vs 1 atmosphere or 760 mmHg), the I would expect the gas was air.

http://www.aip.org/history/electron/jj1897.htm
What a coincidence, I'm on that site too searching for a brief outline of the debate on whether cathode rays are waves or particles (both are correct) and the properties which they exhibit categorized them as either waves or particles.
 

Related Threads on Gas in cathode-ray experiment?

Replies
2
Views
4K
  • Last Post
Replies
1
Views
3K
Replies
2
Views
2K
Replies
14
Views
23K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
0
Views
4K
  • Last Post
Replies
12
Views
3K
Top