15,449 reputation
24275
bio website arXiv.org
location Toronto, Canada, eh?
age 26
visits member for 2 years, 3 months
seen Jul 28 at 17:00

I'm a cosmologist. I did my undergraduate in space engineering (rocket science) and my graduate degree in cosmology. I enjoy Dark Energy, curvature, and modified gravity, but I mainly focus on inflation.


Jul
24
comment Why is friction force negative in ice skater problem?
@DanielSank I would if I could
Jul
23
revised Build a ring around Earth, then remove the supports
added 358 characters in body
Jul
23
comment Distance between two galaxies of different redshift
Oh, I'm pretty sure the general solution is simple. I just can't quite recall what it looks like or what it's called. I know that's frustrating, but at least you know the solution exists, right?
Jul
23
comment Telling if geometry is curved without Riemann tensor
Lately? Not much. I'm doing some pro bono research with Matt while I wait to hear back re acceptances for a PhD program. In the meantime, I've been answering questions here and trying to continue my studies on my own. But we shouldn't get too chatty in the comments. I'm usually online in The h Bar (Physics.SE's chat room). We can talk there if you'd like
Jul
23
comment Telling if geometry is curved without Riemann tensor
Wow, I know you from York. And this subject seems remarkably similar to one we discussed way back. I seem to recall you talked about something similar to this in a cosmology group meeting once as well. So I know you know your stuff. (P.S. I don't want to use my real name here, so let's avoid saying it if at all possible. Jim is what I go by)
Jul
23
comment How many atoms are there in our solar system?
You are technically correct, the best kind of correct. +1
Jul
23
revised Why is friction force negative in ice skater problem?
added mathjax to improve numbers and equations
Jul
23
comment Why is friction force negative in ice skater problem?
Once again, I want to direct everyone's attention to how this is an example of the right way to ask a homework-like question
Jul
23
comment If big bang theory is real.. then why do scientists do not accept “matter CAN disappear to Void”?
@JohnRennie Oh, well if by matter you mean energy as well, then I agree. I thought you meant matter as in stuff made of quarks and leptons. I've gotta say, including all forms of energy in "matter" is not a common usage. But I won't say you shouldn't use it
Jul
23
reviewed Close Rotation of earth and helicopter
Jul
23
comment If big bang theory is real.. then why do scientists do not accept “matter CAN disappear to Void”?
hang on, we know matter was not created at the Big Bang because we know it was created afterwards during leptogenesis, baryogenesis, and BBN.
Jul
23
reviewed Leave Open Speed of light and current dimensions of the universe
Jul
23
comment Creation of a miniature universe?
Is a bag of gold universe always marked by a rainbow universe?
Jul
23
reviewed Close If big bang theory is real.. then why do scientists do not accept “matter CAN disappear to Void”?
Jul
23
comment If big bang theory is real.. then why do scientists do not accept “matter CAN disappear to Void”?
Please do not rush to judge physicists, or anyone, as irrational or illogical merely based on a layman understanding of their profession. It simply isn't polite or justifiable.
Jul
23
comment If big bang theory is real.. then why do scientists do not accept “matter CAN disappear to Void”?
Physicists do not believe matter is conserved. We fully believe matter can be created or destroyed. Fusion, for instance, is one example of destroying and creating matter. Energy is conserved locally. Furthermore, the Big Bang was not an explosion nor any kind of event. The Big Bang is a moment of time. Specifically, it is the moment of time when the measured distance between any two distinct points in space approached zero. These facts are easily discoverable on the internet. Google "Big Bang" and the wiki page will undoubtedly confirm this.
Jul
23
reviewed Close What's the fastest you can slingshot from one black hole to another?
Jul
23
comment how is this kind of rolling motion possible?
@MichaelSeifert So would you call this "motion: impossible"?
Jul
23
answered Speed of light and current dimensions of the universe
Jul
23
reviewed Close How to achieve vertical lift using magnets