34,195 reputation
347116
bio website inspirehep.net/…
location Duchy of Grand Fenwick
age 43
visits member for 3 years, 10 months
seen 13 mins 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.


8m
comment How can a proton be converted to a neutron via positron emission and yet gain mass?
This is true, and can be put into context to make it relevant but as a bare fact it simply doesn't answer the question. Also, adding this information months after another answer noted it isn't a lot of help unless you add something.
9m
comment Beta plus decay…explain one thing
Related (possible duplicate): How can a proton be converted to a neutron via positron emission and yet gain mass?
15h
comment How would you construct a linear graph to determine the density of some material?
This is a standard exercise in a rather old-school approach to data analysis.
15h
awarded  forces
16h
comment System without ground state is not real in nature?
Just for completeness the inverse cube force rule has apparently been solved in 1D, too: dx.doi.org/10.1119/1.2165248. There is no mathematical problem with defining exponentiation to a irrational power. Indeed $e$ itself is irrational so the natural exponential is an example of that. I rather down that particular case has been solved, but at this point I think it is on you to show that there is a problem.
16h
comment System without ground state is not real in nature?
Relevant publication from 1931: journals.aps.org/pr/abstract/10.1103/PhysRev.38.120 . He solves the quantum mechanical states of the inverse cube central force. In short, I think your question may be founded on a misunderstanding.
17h
comment Could undetectable micro black holes floating around the universe cause cellular damage if they passed through a person's body?
If Hawking is to be believed the thermodynamics of the situation you suggest are simply absurd: they'd e spewing energy and ionizing radiation all over the place.
18h
comment Can data be transmitted from one object to another one during electrostatic discharge (ESD)?
I propose a kind of Morse coding in which I sequentially charge a door handle to either high or low voltage and you grab it between charges...
18h
revised Miniature Neutron Stars?
edited tags
18h
answered Miniature Neutron Stars?
22h
answered What will happen in principle if one tries to push a neutron star?
22h
comment How to meaningfully describe the practical effectiveness of one large bomb versus a series of many small bombs, all else constant?
What depends on what you are trying to blow up is how you deploy your explosive which seems to be exactly what you are asking about. As far as I can tell that explosive power metric that you found allows you to convert between quantities of different explosives (i.e if I needed four ounces of TNT, how much RDX do I use instead?).
23h
comment How to tell that the electromagnetic field tensor transforms as a tensor?
All together now: "When it transforms like a tensor." Now, hopefully some of our relativists will explain what "transforms like a tensor", means and we'll be squared away.
23h
comment How to meaningfully describe the practical effectiveness of one large bomb versus a series of many small bombs, all else constant?
I read it twice, followed the links and thought about them. The problem is that the answer depends on the properties of [whatever you are trying to blow up] in a non-linear way.
1d
comment Estimate the difference between two sets of atoms
To repeat what others have said, you should not edit question to completely change their content. Especially after other users have responded to them.
1d
revised Estimate the difference between two sets of atoms
rolled back to a previous revision
1d
comment Can this simple spectrometer be precise without collimation?
Many reflective grating spectrometers do their job without a lens at all. Just a slit, the grating and a projection surface (which is often curved to get a uniform scale). Can you try it without the lens?
1d
comment How to meaningfully describe the practical effectiveness of one large bomb versus a series of many small bombs, all else constant?
All I can do is repeat what I said before "capacity to cause damage" is a context dependent idea. Some purposes simply demand high pressure, while others are better handled by dispersing the energy over a wider volume. Say what you care to do and the explosives guys will have an answer.
1d
answered Handedness of Reference Frames?
1d
comment Hydrogen Spectra
But pointedly one electron per atom. If you have two (or more) you get a different spectrum (more like Helium's).