405 reputation
18
bio website reedbeta.com
location Milpitas, CA
age 28
visits member for 1 year, 3 months
seen Mar 17 at 19:45

I'm a graphics programmer, an amateur physicist, and a sci-fi nerd. I teach computers how to make pretty pictures. I'm excited by beautiful, immersive, story-driven games and interactive fiction. I enjoy messing around with esoteric ideas. I like explaining things.

I currently work for NVIDIA DevTech. Previously, I worked for Sucker Punch Productions on the Infamous series of games for PS3 and PS4.

reedbeta.com - developer blog, OpenGL demos, and other projects. @reedbeta on Twitter.


Jan
19
comment Where is radiation density in the Planck 2013 results?
@Waffle'sCrazyPeanut It's only negligible today...in the early universe it was the dominant factor, since radiation density scales so strongly (fourth power of the scale factor).
Jan
19
comment Where is radiation density in the Planck 2013 results?
@Waffle'sCrazyPeanut I wrote a blog post about it awhile back, and the code (in Python) is linked from there. It's pretty simple.
Jan
18
accepted Where is radiation density in the Planck 2013 results?
Jan
18
comment Question related to work done and energy
You are right in the case of springs or hydraulic arms or suchlike - but with human muscles you cannot hold the box above your head indefinitely. You will get tired and will have to put the box down, which suggests your muscles are expending energy just to hold the box in place.
Jan
18
asked Where is radiation density in the Planck 2013 results?
Jan
16
awarded  Yearling
Mar
29
comment Clarification regarding Special Relativity
@aepryus I created a chat room: chat.stackexchange.com/rooms/8124/… if you want to talk more.
Mar
29
comment Clarification regarding Special Relativity
As I said, he will not be able to tell who previously accelerated and who, if anyone, remained inertial.
Mar
29
comment Clarification regarding Special Relativity
@aepryus If a new observer arrives after the initial acceleration phase, he will not be able to tell who previously accelerated and who, if anyone, remained inertial. But if he continues watching he will of course see the later acceleration phases and be able to tell the difference that way.
Mar
29
answered Clarification regarding Special Relativity
Mar
21
comment Can you create mass with $E=mc^2$?
If you're asking "can matter be created from energy" the answer is yes; this is done all the time in particle accelerators, though only in extremely tiny quantities. Consider the production of antimatter for instance.
Mar
18
comment Place each foot on a scale: can you add the two to find your weight?
@toon81 No; friction could hold the scales in place against the horizontal component of the force.
Mar
18
awarded  Editor
Mar
18
revised Determine the Dependence of S (Entropy) on V and T
math formatting
Mar
18
suggested suggested edit on Determine the Dependence of S (Entropy) on V and T
Mar
18
comment Can we tell from periodic table that which materials are ferromagnetic?
See en.wikipedia.org/wiki/Ferromagnetism#Ferromagnetic_materials. The only ferromagnetic elements in the main part of the table are iron, cobalt, and nickel.
Mar
18
comment Tying knots in power cables to prevent power surge from lightning strikes
Well, by the same argument it could leap across the gap between the wall socket and anything conductive in the room. Actually, electrical grids are grounded so that (the vast majority of) current from lighting strikes flows directly to ground, so this does not happen.
Mar
17
answered Question about the linearity of wave functions
Mar
16
comment Why is it important that the equation of state parameter of dark energy is measured?
@user16307 I don't claim to have exhaustively answered your question, but I did consider a major aspect of it. So I don't think I deserved the downvote. Downvoting means "this answer is not useful", not "this answer is useful and correct but doesn't go far enough for me."
Mar
16
comment Why is it important that the equation of state parameter of dark energy is measured?
@user16307 You asked "what will it tell us" and "what are the implications". In my answer is something it will tell us and the implications of that. If you consider this "essentially irrelevant", well, I can't control that, nor can I control what you do or don't consider to be an "important" reason for the equation of state parameter to be measured. I wrote about an aspect of dark energy that seems interesting and important to me, and gave you a reference to my blog post to read more if you wanted.