name of the experiment

[RK1992]

i need the name of the experiment where you pass an electron through a p.d. and it accelerates, but as the electron's predicted acceleration (from field strength etc) would give a relativistic velocity, the results do not agree with newtonian mechanics?

he said it's useful evidence, in a fairly simple experiment, for special relativity but i can't find the name of it :(

thanks

[bcrowell]

Possibly this is Bucherer, Ann. Physik, 28 (1909) 513.

http://onlinelibrary.wiley.com/doi/10.1002/andp.19093330305/abstract;jsessionid=B5A68D70C001D420C322024E91E402 C9.d01t01

http://en.wikipedia.org/wiki/Alfred_Bucherer#Relativistic_mass

It's described in this English-language book: http://www.amazon.com/Concepts-Relativity-Quantum-Theory-Second/dp/0023993405/ref=sr_1_1?ie=UTF8&s=books&qid=1283215440&sr=8-1

[jtbell]

he said it's useful evidence

Who said? :smile:

Practically every high-energy particle accelerator built since World War II fits this description. Their designs assume that the particles follow relativistic dynamics and not Newtonian dynamics. They wouldn't work if the particles followed Newtonian dynamics.

[bcrowell]

he said it's useful evidence

Who said? :smile:

Practically every high-energy particle accelerator built since World War II fits this description. Their designs assume that the particles follow relativistic dynamics and not Newtonian dynamics. They wouldn't work if the particles followed Newtonian dynamics.
If it's Bucherer he was thinking of, then it has some historical importance because it was done in 1909, so it predated not just particle accelerators and WW II but WW I as well.

[RK1992]

Who said? :smile:

Practically every high-energy particle accelerator built since World War II fits this description. Their designs assume that the particles follow relativistic dynamics and not Newtonian dynamics. They wouldn't work if the particles followed Newtonian dynamics.

Oops, I meant to say my physics teacher did. And that's very true, but I think he was talking about that specific one mentioned as I'm doing a project on relativity (I'm in UK 6th form - age 17 - so not yet at degree level - this is considered supplementary to my a level studies) and I need to discuss evidence that suggested it such as Michaelson-Morley and outline the theory etc.

Possibly this is Bucherer, Ann. Physik, 28 (1909) 513.

http://onlinelibrary.wiley.com/doi/10.1002/andp.19093330305/abstract;jsessionid=B5A68D70C001D420C322024E91E402 C9.d01t01

http://en.wikipedia.org/wiki/Alfred_Bucherer#Relativistic_mass

It's described in this English-language book: http://www.amazon.com/Concepts-Relativity-Quantum-Theory-Second/dp/0023993405/ref=sr_1_1?ie=UTF8&s=books&qid=1283215440&sr=8-1

Looks useful thank you :D And I'll look into buying the book.

If it's Bucherer he was thinking of, then it has some historical importance because it was done in 1909, so it predated not just particle accelerators and WW II but WW I as well.

Yeah that's the sort of thing I needed, thank you :)