Experiment Showing Relativistic Effects in PD Acceleration

  • Thread starter Thread starter RK1992
  • Start date Start date
  • Tags Tags
    Experiment
RK1992
Messages
87
Reaction score
0
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
 
Physics news on Phys.org
RK1992 said:
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.
 
jtbell said:
RK1992 said:
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.
 
jtbell said:
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.

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

http://onlinelibrary.wiley.com/doi/10.1002/andp.19093330305/abstract;jsessionid=B5A68D70C001D420C322024E91E402C9.d01t01

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

It's described in this English-language book: https://www.amazon.com/dp/0023993405/?tag=pfamazon01-20

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

bcrowell said:
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 :)
 

Thread 'Describing the Big Bang'

I started reading a National Geographic article related to the Big Bang. It starts these statements: Gazing up at the stars at night, it’s easy to imagine that space goes on forever. But cosmologists know that the universe actually has limits. First, their best models indicate that space and time had a beginning, a subatomic point called a singularity. This point of intense heat and density rapidly ballooned outward. My first reaction was that this is a layman's approximation to...
View full post »
Thread 'Dirac's integral for the energy-momentum of the gravitational field'

Thread 'Dirac's integral for the energy-momentum of the gravitational field'

See Dirac's brief treatment of the energy-momentum pseudo-tensor in the attached picture. Dirac is presumably integrating eq. (31.2) over the 4D "hypercylinder" defined by ##T_1 \le x^0 \le T_2## and ##\mathbf{|x|} \le R##, where ##R## is sufficiently large to include all the matter-energy fields in the system. Then \begin{align} 0 &= \int_V \left[ ({t_\mu}^\nu + T_\mu^\nu)\sqrt{-g}\, \right]_{,\nu} d^4 x = \int_{\partial V} ({t_\mu}^\nu + T_\mu^\nu)\sqrt{-g} \, dS_\nu \nonumber\\ &= \left(...
View full post »

Thread 'A sufficient condition for integrability of equation ##\nabla g=0##'

In Philippe G. Ciarlet's book 'An introduction to differential geometry', He gives the integrability conditions of the differential equations like this: $$ \partial_{i} F_{lj}=L^p_{ij} F_{lp},\,\,\,F_{ij}(x_0)=F^0_{ij}. $$ The integrability conditions for the existence of a global solution ##F_{lj}## is: $$ R^i_{jkl}\equiv\partial_k L^i_{jl}-\partial_l L^i_{jk}+L^h_{jl} L^i_{hk}-L^h_{jk} L^i_{hl}=0 $$ Then from the equation: $$\nabla_b e_a= \Gamma^c_{ab} e_c$$ Using cartesian basis ## e_I...
View full post »

Similar threads

B Michelson Morley experiment and the Doppler effect
Replies
21
Views
2K
B Can Relativistic Effects Alter Thermodynamic Processes in Experiments?
Replies
4
Views
2K
B Newtonian vs. Relativistic momentum
Replies
19
Views
4K
B Experimental evidence for effective mass increasing with speed
Replies
11
Views
3K
A Weyl tensor and coordinate acceleration
Replies
12
Views
2K
I Non-Inertial Relativistic Dynamics
Replies
18
Views
1K
B Experimental evidence for effective mass increasing with speed
Replies
15
Views
3K
I Can this experiment break Lorentz symmetry?
Replies
35
Views
469
B Time dilation and the reference frame of the vacuum
Replies
17
Views
2K
Misc. DIY Experiment of Special Relativistic Effects?
Replies
28
Views
5K

Hot Threads

Recent Insights

Back
Top