All Questions
Tagged with specific-reference experimental-physics
15
questions
1
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0
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60
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Experiments to show that a voltmeter measures energy per unit charge
In "Physics for the Inquiring Mind" by Eric Rogers, an experiment is described to show that a voltmeter (considered as a black box) indeed measures work done per unit charge by measuring the ...
- 1,702
3
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1
answer
100
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Where can I find the original experiment that lead to this discovery of "new fundamental underwater force"?
I read this article Discovering a new fundamental underwater force which describes the discovery of the mechanism that causes particles in stratified fluids, e.g. the oceans, to move towards others ...
- 129
13
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1
answer
880
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How accurately is it known that protons have the same charge as electrons?
Recently, I claimed that the proton and electron have the same charge, and that this has been experimentally verified up to $1$ part in $10^{26}$. This belief was naively based on CODATA's 2014 ...
- 288
3
votes
1
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66
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Search for unpublished note on Magnetic Monopole Detection
Design of an electromagnetic detector for Dirac monopoles by Luis Alvarez
This is an unpublished 1963 note from Lawrence Radiation Laboratory (Physics Note 470), and is heavily cited in all papers on ...
- 2,768
5
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3
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737
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What are the original papers on the hydrogen spectral lines?
I am trying to find original sources for experiments that had observed spectral lines from hydrogen or other gases. I am looking into experiments that motivated Niels Bohr to write his ideas on the ...
- 691
1
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2
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497
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Did Don Borghi's experiment show that neutrons can be synthesized purely from protons and electrons?
C. Borghi, C. Giori, and A. Dall'Olio published an article entitled "Experimental evidence of emission of neutrons from cold hydrogen plasma" appearing in Yad. Fiz. 56, 147-156 (July 1993) and Phys. ...
- 2,136
6
votes
1
answer
375
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How long does it take for a chemostat to reach equilibrium?
A chemostat is a device to grow a cell culture in equilibrium.
If we denote by $x$ the cell density and by $s$ the density of nutrients, we can write down the following equations (1):
$$\frac{ds}{dt}...
- 3,732
8
votes
1
answer
1k
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Can Ohm's law break in metals?
I was rereading Purcell's Electricity and Magnetism as research for another question, and I found this passage:
In metals Ohm's law is obeyed exceedingly accurately up to current densities far ...
- 134k
6
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0
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92
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Experimental tests of Cluster Decmposition
How tight are experimental and astrophysical tests on whether Cluster Decomposition is satisfied at various space-like separations?
Is there a review paper or a standard reference on the question?
I ...
- 9,948
3
votes
1
answer
886
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What is 'tilt locking' of a laser cavity?
In another question, jasonh mentions a scheme for locking a laser to a resonant cavity called 'tilt locking':
The signal is used for locking the frequency of a laser to a high finesse cavity. The ...
- 9,541
2
votes
2
answers
536
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Correlation Functions, Symmetries and Measurements
Is there a book that goes deep into correlation functions? What I'm interested in a book/article that explains in the detail the relation of the correlation functions with symmetries and how one can ...
- 139
0
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1
answer
715
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Examples of immiscible or wall-climbing liquids
I am very interested in the physics of immiscible fluids. I would like to ask you if you know any source or list of experiments done by others, with two or three liquids. I am interested in the final ...
- 645
2
votes
1
answer
158
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Consistently oscillating micron sized particles in a liquid
I have an idea that would involve the measurement of an oscillating substance whilst the substance is immersed in a liquid. However, the method that I would use to measure the frequency of these ...
- 631
3
votes
0
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65
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Review of Gas Chromatographs?
Could anyone suggest a recent review article or book on gas chromatography instrumentation? My interest is in the devices themselves, rather than using them for a particular application.
This article, ...
6
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4
answers
2k
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Atomic mass of Copper-63?
This URL lists the mass of Copper-63 as 62.9295975(6) and this other URL lists the mass as 62.939598. These values differ by almost exactly 0.01 which seems hard to explain by experimental error. ...
- 478