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location London, United Kingdom
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visits member for 4 years, 6 months
seen Sep 4 '14 at 18:03

Phd student


Jul
21
comment Is apparent horizon curvature lesser due to refraction of light in the atmosphere?
See the comments by @Philip Gibbs in this question: physics.stackexchange.com/questions/11021/… It's not exactly the same situation but the relevant physics is the same.
Jul
21
comment What conservation law corresponds to Lorentz boosts?
You can answer your own question @Warrick. In fact, I think there's even a badge for that ;-)
Jul
20
revised Decay of massless particles
Clarified scope of answer
Jul
20
comment Decay of massless particles
@Bebop: Good point, not sure why I only considered decay to massive particles. I'll edit the answer accordingly.
Jul
20
comment Decay of massless particles
I agree that the word "radioactive" is superfluous in the question's title. For clarity I think a better title would be 'Can massless particles decay?' but of course the choice is yours.
Jul
20
revised Decay of massless particles
Expanded for clarity
Jul
20
answered Decay of massless particles
Jul
19
comment How to determine the mass of a quark?
I hereby promise to upvote a comprehensive, "enormously long answer" alluded to in @Genneth's comment. ;-)
Jul
18
comment How to determine the mass of a quark?
+1 for the links to the pdg.
Jul
18
comment what is the difference between a blackhole and a point particle
Possibly related: physics.stackexchange.com/questions/9529/…
Jul
18
comment Are there books on Regularization and Renormalization in QFT at an Introductory level?
There was a recent blog post about these issues that you might find useful, it's here: motls.blogspot.com/2011/07/…
Jul
17
comment How to determine the mass of a quark?
@David: I think a good answer to the question would cover both of our interpretations. I would attempt to do so but I am sure that, before long, someone else will answer it more clearly than I could.
Jul
17
comment How to determine the mass of a quark?
Given that this sounds like a "how do we measure.." question, I would suggest the 'experimental physics' tag. ;-)
Jul
17
comment Poincare group vs Galilean group
Could you perhaps exchange the equation numbers to the equations themselves please?
Jul
16
comment The Ozma Problem
I tend to just look at the back of my hands with my fingers and thumbs straightened, the left hand makes a nice 'L' shape. Not sure this is going to work for those aliens though ;-)
Jul
16
comment Is there any way to increase a rubber-bands lifetime?
OK, can I have some "prizes" please?! I think you meant 'prices' @Georg, +1 for a good answer all the same ;-)
Jul
16
comment Commutation of operators in quantum theory
'Notation' tag might be apt here
Jul
15
comment what is an inverse femto barn?
It's a shame we don't have an awards system such that I could nominate this answer. (+1 needless to say.)
Jul
15
comment real world applications of Mathematics which use functions with singularities, not just as a matter of mathematical taste but for conceptual reasons
I agree with @Zev C: this should be a community wiki.
Jul
13
awarded  Civic Duty