Whats faster than the speed of light?

AI Thread Summary
The discussion centers on the concept of faster-than-light phenomena, with participants questioning claims about superluminal speeds. The OPERA experiment, which initially suggested neutrinos could travel faster than light, is mentioned as a potential reference point. However, it is noted that subsequent corrections have invalidated those findings. The conversation emphasizes the importance of credible sources and scientific accuracy in discussing such topics. Understanding the nuances of phase and group velocities is also highlighted as crucial in this context.
danielpherlio
Messages
4
Reaction score
0
Im just interested to know because apparently there is something faster than the speed of light and the fastest thing i know is the speed of light?
 
Science news on Phys.org
What do you mean with "apparently there is something faster than the speed of light"? Do you refer to phase velocity, group velocity or what?
 
what is faster than light i herd somewhere on the internet scientist found something that's faster than light?
 
danielpherlio said:
what is faster than light i herd somewhere on the internet scientist found something that's faster than light?
Please provide a reference so we know what you're talking about.
 
maybe he's talking about the neutrino experiment!
 
danielpherlio said:
what is faster than light i herd somewhere on the internet scientist found something that's faster than light?

This is not an acceptable form of "reference" for the physics forums:

https://www.physicsforums.com/blog.php?b=2703

As has been alluded to, you are probably referring to the apparent superluminal neutrinos from the OPERA experiment. Do a search. You need to update your information because there's a correction to that.

Zz.
 
Last edited by a moderator:
Thread 'A quartet of epi-illumination methods'

Thread 'A quartet of epi-illumination methods'

Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
View full post »

Thread 'Effective absorption coefficient of gold nanoparticles'

I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...
View full post »

Similar threads

I What travels faster: visible light in water or X-rays in liquid mercury?
Replies
6
Views
2K
Achieving the speed of light at the end of a whip
Replies
15
Views
5K
Nothing can travel faster than the speed of light
Replies
13
Views
3K
Speed of Light when not in a vacuum?
Replies
5
Views
6K
Speed of the outside of a wheel faster than the speed of light
Replies
12
Views
2K
B Is light breaking its own speed limit when cornering?
Replies
25
Views
2K
Measuring the speed of light in a straight line
Replies
19
Views
2K
Is the Speed of Light Limited by the Properties of Matter?
Replies
16
Views
2K
Several questions about the speed of light
Replies
12
Views
12K
Faster than light: Instantaneous lever
Replies
14
Views
3K

Hot Threads

Recent Insights

Back
Top