40,173 reputation
355127
bio website inspirehep.net/…
location Duchy of Grand Fenwick
age 44
visits member for 4 years, 6 months
seen 2 hours ago

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.


Jun
21
reviewed Approve Laser action on one side mirrors (half silvered) and prisms
Jun
21
reviewed Reject Anti-laser: How sure we are that energy is transported?
Jun
20
revised Why strong and weak forces are short range?
edited tags
Jun
20
comment Convert a 200mm linear stroke into 90 degrees motion
So, you are basically asking for help designing a wire bending press? There are certainly some physics questions bound up in the task, but it is not clear that wide open design-a-machine questions are on-topic.
Jun
20
comment Is there a difference between, static loading and fast loading of a polymer (non linear elastic material) in terms of elastic potential generated?
Correct me if I am wrong, but just as the work done stretching the band depends on the speed with which it done, but the work available while relaxing the band also depends on the speed, doesn't it. In which case what do you mean by "potential" in this case? The maximum energy available?
Jun
20
comment Why cellphone cameras don't have optical zoom
While this argument is basically correct, it would help if you exhibited some sample calculation to show that current performance parameters are withing, say, an order of magnitude of being noise limited.
Jun
20
comment Why cellphone cameras don't have optical zoom
@jkej Frankly I think the on-the-ground answer is cost, but if you want argue the physics of the situation I will leave it to others to decide on a close.
Jun
20
comment Why cellphone cameras don't have optical zoom
Purely an engineering question.
Jun
20
reviewed Approve Why strong and weak forces are short range?
Jun
19
reviewed Edit Relation between Radiance and Irradiance
Jun
19
revised Relation between Radiance and Irradiance
TeX and so on
Jun
19
reviewed Reject Is the Keppe Motor “real”?
Jun
19
comment why can't you use your cellphone on an airplane?
In the end this is a question about policy and technology not about physics as such. Qmechanic's link cover the bases pretty well.
Jun
19
comment Gas giant evolution over lifetime
They will contract as they radiate heat (the energy lost comes from the kinetic energy of the gas). This is a very slow process.
Jun
19
reviewed Edit Electromagnetic waves produced by a charged pith ball
Jun
19
revised Electromagnetic waves produced by a charged pith ball
Put TeX to the magnitudes, strip thanks
Jun
19
reviewed Reject A good, concrete example of using “chaos theory” to solve an easily understood engineering problem?
Jun
19
reviewed Reject Converting between brilliance, intensity, and flux
Jun
19
reviewed Reject Why can Hiroshima be inhabited when Chernobyl cannot?
Jun
19
reviewed Approve Gas giant evolution over lifetime