Experimental nuclear and particle physicist. These days I'm teaching, but I've spent a lot of time on nucleon structure in fixed target electron scattering and neutrino oscillations using reactors and beam sources.

Been reading Zemansky & Dittman's book on thermodynamics recently. Quote: ``The concept of temperature is rich in interpretations and levels of abstraction.'' Nice.

2h
comment How is displacement in circular motion measured?
Instantaneous speed is the magnitude of instantaneous velocity, but that does not mean that average speed is the magnitude of average velocity.
2h
comment How is displacement in circular motion measured?
Check in the treatment that you are using the distinction between "displacement" and "distance". After that all should be clear.
5h
comment Bell's inequality, "complete plans" and spooky action at a distance
Bell's theorem has multiple particles in it by construction. There is no Bell's inequality for one particle. You seem to be trying to make an analogy of some kind, but the math does not translate.
7h
comment Were 53 terrorist attacks thwarted in New York City since September 11, 2001 and June 2015?
A couple of interesting question to ask yourself when you see that kind of statistic are (a) how many of these would have been consider undistinguished criminal behavior in the pre-911 era and (b) how many of these only approached operational status with the help and support of law enforcement plants. Neither of these questions render the behaviors OK, of course, but they cast light on the way these actions are being used to justify all kind of law enforcement policies which might have been resisted in the last century.
9h
comment Does Hooke's Law apply for microscopic amounts of compression?
You'll want to search for "elastic modulus".
10h
comment Why is local realism not possible with QM?
Violations of Bell's inequality don't prove non-locality as such. They prove that at least one of realism and locality fail. Many people are very firmly of the opinion that obviously one of them can't be violated so it must be the other that fails. Alas, not everyone agrees on the identity of the sacrosanct principle.
11h
comment Why is local realism not possible with QM?
Is the question one of why Bell's theorem identifies differing results for the two case, or why people have concluded that Bell's inequality is violated?
11h
comment Earth density distribution from shooting neutrinos?
Time structured beams would overcome the directionality issue, but we (meaning the whole world) can't afford it. DUNE is projected to be almost of a billion dollars and would represent less than one average accelerator+detector pair for the scheme. The neutrino community is still drooling over the idea of a 2500 km beam experiment (shorter magic baseline), but we can't get the rate with the dollars that we have.
12h
revised Earth density distribution from shooting neutrinos?
added 127 characters in body
12h
revised Earth density distribution from shooting neutrinos?
added 280 characters in body
12h
answered Earth density distribution from shooting neutrinos?
13h
comment Why do we allow anonymous users to suggest edits?
If you believe that a user is robo-reviewing, please flag one of their posts with the custom reason and let the mods know. Links to a couple of bad reviews wouldn't hurt.
13h
comment Radio active isotopes
On top of the problem with the question not being suitable for the site "activity of 3700000 meters per second" appears to be dimensionally incorrect. Activity generally has units of Becquerels (Bq; mean events per second).
13h
comment Certain doubts regarding the movie 'Interstellar'
@Chris, while I totally agree with you, much was made in the press of the efforts to make the CGI conform to GR, and combining that notion with the usual quality of science reporting and the lack of fine distinction many lay readers bring to such reporting this "Oh, it's a documentary" response should have been predictable. To make the point clear for Aneek: the only thing scientifically accurate in the movie was the visuals. And even then only outside the event horizon.
13h
comment determinism, and quantum computing
Saying that the MWI is testable because it makes predictions totally misses the point. The claim that the MWI is better than other quantum interpretations requires some set of predictions that differ from those made by other quantum interpretations. And while I am not an expert in the foundations of QM, last I heard there are no such testable predictions.
15h
comment Frictional pulley
Aneek, clarifying in the comments is good as far as it goes, but if you edit a clarification into the body of the post your question will appear in the review queue to be checked by other users. That is the main route by which question get taken off hold. Though, of course, review does not automatically imply that question will be taken off hold: it means that close-empowered users who read the review queues will get another look at it.
17h
comment Is it permissible to re-post another member’s unanswered question?
Be aware that just showing work does not render homework-like question acceptable. Please read the meta question that is linked when questions are closed as homework-like.
1d
answered How to handle questions getting buried?
1d
comment Can ionizing radiation be seen in videos taken on a mobile phone?
Also of note: eric.ed.gov/?id=EJ900150 This is not scintilation detection, but detection of direct energy deposition by ionizing charged particles (mainly muons).
1d
comment Can earthquakes and volcanoes be due or overdue?
Surely these statements are to be understood as statistical in nature. It's not like any of these features keep time. I mean, Old Faithful, noted because it is regular, and that is on a much smaller scale.
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