1,357 reputation
515
bio website
location London, United Kingdom
age
visits member for 3 years, 3 months
seen Oct 13 at 7:58

My background is in theoretical/mathematical physics [MPhys/PhD], I was a Senior Computational Fluid Dynamics Analyst in the nuclear/defense industry before selling my sole and becoming a full-time commercial software developer around 2011.


Sep
24
awarded  Autobiographer
Jul
9
comment Euler Equations, Sod shock tube & conservation
Note that the code used to display the animation is not very stable and there a lot of numerical instabilities in these simulations which are non-physical. Just something to be aware of...
Jul
7
awarded  Yearling
Jun
12
comment Deborah Number for harmonic excitation
In this case the characteristic time scale is merely the inverse of the frequency of harmonic excitation. The observational time scale is not a property that is 'applied' to the fluid, it is abstract.
Apr
10
revised Magnetic Pole Emission from Pulsars
deleted 4 characters in body
Mar
24
comment Many times speed of light
You ask a good question, one whose answer lies in the subtle difference between expansion that is faster than the speed of light and the propagation of information that is faster than the speed of light. The latter is forbidden by fundamental physical laws, but the former is allowed; that is, as long as you are not transmitting any information (like a light pulse), you can make something happen at a speed that is faster than that of light.
Mar
13
comment Was Einstein wrong when he said nothing can go faster than the speed of light?
I am pretty calm fella. Thanks for your concern though...
Mar
12
awarded  Talkative
Mar
12
awarded  Informed
Mar
12
comment Was Einstein wrong when he said nothing can go faster than the speed of light?
God, what has happened to this site. Daniel Shawen's answer below has more downvotes than this utter garbage. I feel sick...
Nov
21
comment Are Stephen Crothers' claims legitimate?
't Hooft is a top top guy.
Nov
11
answered Calculating Length Scales from Passive Scalar Field
Nov
6
answered What is the linearized form of relativistic hydrodynamics?
Oct
28
comment How important is mathematical proof in physics?
Thanks for clarifying...
Oct
28
comment How important is mathematical proof in physics?
I am not sure it is right to say 'proof checking software itself is a simple parser that can be reduced to one or two pages of code'. This is a massive underestimation. I only know of proof checkers for pure logic and these programs will not be as trivial as one or two pages of code...
Oct
17
comment Are Stephen Crothers' claims legitimate?
He also was inexplicably rude to Kerr in their correspondence, the guy contacted me when I was doing my Ph.D. hes papers are flawed at the very basic level - assumptions. One of his claims is that r is not a radial distance - well who ever said it was??
Oct
9
comment $\gamma$ in Newton's Second Law of Motion in Differential Form
The down vote is non-sense. Tell me the reason. This site makes a mockery of StackExchange.
Oct
9
revised $\gamma$ in Newton's Second Law of Motion in Differential Form
added 141 characters in body
Oct
3
comment $\gamma$ in Newton's Second Law of Motion in Differential Form
This is a Newtonian equation taken at face value. A classic introduction to aerodynamic drag for basic Newtonian physics is to use $\lambda v^{2}$ and there is nothing wrong with doing so. This clearly is not an advanced equation and all I am doing it answering the question, not second guessing what the author of the equation was thinking at the time of writing.
Oct
3
answered $\gamma$ in Newton's Second Law of Motion in Differential Form