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.

8h
awarded Yearling
8h
awarded Yearling
19h
comment Are wave functions real physical objects?
How would you distinguish a "real physical" wave-function from one that did not have those qualities?
19h
comment Is it possible to single out a proton, electron, neutron?
In relation to the proton ... consider the ion $^1H^+$.
20h
comment How fast am I moving?
Your speed relative light is $c$. No matter what your speed is relative anything else is. That is what it means for everyone to measure the same speed of light.
1d
comment What is a nucleon field?
@CuriousOne Heck, you can use a ad hoc relativistic description too, though few people bother these days because the newer tools you name have really taken over.
1d
comment What is a nucleon field?
The phrase is only meaningful in the context of quantum field theories. Are you familiar with the foundational material of that method?
1d
revised What is a nucleon field?
edited tags
1d
comment What do you call a response which does not address the question?
I believe this is called "staying on message" in the political lexicon..
2d
comment How experimentalists put bounds on new physics at the LHC?
Related: physics.stackexchange.com/q/32059 physics.stackexchange.com/q/13428
Dec
19
comment Relativistic non-linear Walecka model
"And why cannot Google show a satisfactory result to such a simple question?]" Searching based on plain text doesn't deal well with restrictive adjectives because there is a context dependency that is neglected (or treated with fairly rough heuristics). The place to start is in understanding what a Walecka model is in general (a meson exchange based model of nuclear physics, I believe), and only then understand what the adjectives imply.
Dec
19
answered Do we know what a radio wave looks like?
Dec
19
comment Why are [some] professors ambiguous about material that is actually tested on exams?
I have to ask why you think a professor would not be ambiguous about the contents of the exam? It's not like I care that you can bone up---anyone who has made it to college can be expected to manage that. Go home and learn it all, already!
Dec
19
comment Explorers trying to cross an impassable Pacific ocean, which has caused a different WWII outcome
Also republished in multiple other places. A popular story. And for good reason.
Dec
19
comment How do we find the accuracy of atomic clocks?
The fundamental reason that atomic clocks are so accurate is that they are just counting devices. You count cycles. And when you count enough of them the bits that you may have missed at the beginning and the end get too small (fractionally) to care about. Then the problem becomes one of checking that you don't miss some as you go along and that is easier to do in comparison mode.
Dec
18
comment Why is Larry Niven's Ringworld Unstable?
@JamesBowery No. For the same reason that gravity isn't a restoring force. Both fall by $1/r^2$, so both are subject to the same math.
Dec
18
comment Why do physics students find vectors so difficult to deal with?
I would hesitate to use the word "component" in that way for fear of students conflating it with the use of the same word meaning the inner-products with the basis vectors of our coordinate space. Students sufficiently confused without adding any ambiguous vocabulary to their difficulties. Perhaps "two properties" would be better.
Dec
18
comment Elastic scaterring of neutrinos - Why does the electron neutrino dominate this channel
The speed of the electron needs to be about 3/4 of c for that to happen. That means a kinetic energy of about 270 keV = 0.27 MeV. Solar neutrinos have energies of about 1 to 10 MeV. In general there is more than sufficient energy.
Dec
18
comment Why do graduate programs have comprehensive examinations (comps)?
Meh. All the answers to the alleged duplicate address exams that cover undergrad material early in a grad-students tenure, but the question is explicitly about exams that test graduate material later in the students residence.
Dec
17
revised When conserving angular momentum, about which point(s) should it be calculated?
added 2 characters in body
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