dmckee

21,336 reputation

22670

bio	website	inspirehep.net/…
	location	Duchy of Grand Fenwick
	age	42
visits	member for	2 years, 6 months
	seen	3 mins ago
stats	profile views	3,160

Experimental particle physicist. These days I'm doing neutrinos.

	21,336 reputation	bio	website	inspirehep.net/…	visits	member for	2 years, 6 months
22670 badges		location	Duchy of Grand Fenwick		seen	3 mins ago

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4m	reviewed	Approve suggested edit on Convert units from cal cm^-1 day^-1. to Wm-2
5m	reviewed	Approve suggested edit on Friction on a conveyor belt
6m	reviewed	Approve suggested edit on Manufacturing Fresnel Lenses with Sound
13m	comment	The etymology of “Umbrella Sampling” As this seems to be concept from computational attacks on physical problems, it would probably be better on the scientific computation site. I will ask the moderators there if they want it and migrate if they do.
17m	comment	Length Traveled from Complete Stop You might find some help in the tak wiki for suvat-equations.
18m	revised	Length Traveled from Complete Stop edited tags; edited tags
23h	comment	What are the implications of the Nesvizhevsky experiment and followup experiments with ultracold neutrons? @MrX I've edited the link into your post which is better than putting it in the comments. I've also linked to the arXiv abstract page which is generally preferred to giving a PDF link, as many user will want to read the abstract before deciding to download a PDF and the abstract tracks versions updates by default and provides access to the version history.
23h	revised	What are the implications of the Nesvizhevsky experiment and followup experiments with ultracold neutrons? added 56 characters in body
1d	comment	What is the result of applying a fourier transform n times to a distribution? Is there anything not well explained by the Wikipedia section on invertibility and periodicity of the Fourier transform?
1d	comment	Can we measure “wavefunction” of quantum particles? Duplicate of physics.stackexchange.com/questions/10240/…?
1d	comment	When (Exactly) Does Bremsstrahlung Radiation Occur? To emphasize what Peter has said, this is a quantum mechanical process. Of course it is ruled by probabilities.
1d	comment	What are some novel physics demonstrations that can be done cheaply? Welcome, Guest. We do not generally allow question of the form "Lets assemble a list of [something]."
1d	comment	Can a current carrying loop or wire produces no magnetic field? It is typical in actual application to use either twisted pairs or coaxial geometry both of which have some advantages over a side-by-side pair geometry.
1d	comment	The stress in copper and steel parallel compound members The key observation is that the fractional compression of the column (i.e. the strain) is the same for all the components of the column.
1d	revised	Why does kinetic energy increase quadratically, not linearly, with speed? strip out selfpromotion
2d	revised	Can general relativity be completely described as a field in a flat space? Remove meta discussion aimed at the mods.
2d	comment	How can I determine whether the mass of an object is evenly distributed? @AlexSu As I said in the comments on the main question the ringing spectrum would be different when struck. I don't know of a off-the-shelf piece of software to work the problem for you but the problem is not terribly difficult.
2d	comment	How can I determine whether the mass of an object is evenly distributed? Come to think of it, if you have some perfect examples to use for comparison, the ringing behavior under a well defined impact is powerful test that can be done with quite simple tools. A repeatable drop mallet and a PC with good microphone might be enough...
2d	comment	How can I determine whether the mass of an object is evenly distributed? @BenCrowell Well, ultrasound would detect the difference in may example, but does Alex's "typically lab equipment" include ultrasound? On the other hand, if the ideal object rings nicely when hit by a mallet my construction is probably detectable that way.
2d	comment	How can I determine whether the mass of an object is evenly distributed? In less symmetric arrangements the near field gravitational effects could differ, but this being a malicious case, I've made it maximally easy for me and maximally hard for Alex. Bhawhawhawhaha! ::dons turban with point in the middle::