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age 74
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Retired experimental particle physicist.

The picture is a fayum . It looks like aunts and cousins of mine :).


Nov
17
revised Does quantum mechanics predict instantaneous action at a distance even without entanglement?
clarified the electronic molecular nature
Nov
17
answered Does quantum mechanics predict instantaneous action at a distance even without entanglement?
Nov
17
reviewed Approve suggested edit on Help: 3D visualization of magnetic field around moving point charge
Nov
17
reviewed Approve suggested edit on What are the properties and characteristics of a single Quantum?
Nov
17
comment Isn't a single Quantum one single string?
Neo, "duality" is a concept in theoretical particle physics that ties two theories as a different manifestation of the same basic theory. The term "quantum" , which , if you read my reply to your previous question and my comments above, should be clear, is a term describing the behavior of variables, expressed as operators under quantum mechanics. It is not an entity. A string, even a classical string, can contain quanta, but is is not a different manifestations of any type of quantum. It is a mathematical representation of a generic particle.
Nov
17
comment Information faster-than-light and GR vs. QM
For physicists mass has a definite meaning, given by the four vector measure. Mass has units of energy but it is not a conserved quantity . No physicist talks of conservation of mass. If the energy existed then the hypothetical doubling would not violate anything.
Nov
16
comment Information faster-than-light and GR vs. QM
actually mass is not conserved. It is conservation of energy that would be violated .
Nov
16
comment If electromagnetic fields give charge to particles, do photons carry charge?
"the force between charged fermions is exclusively conveyed by an uncharged boson quanta, photons". Not exclusively. In QED the photon goes into virtual loops of e+ e- ( and higher order virtual loops). The crossection and trajectory for the two cases, is different. This is an experimental fact : like charges repel, unlike attract. This experimental fact is included in the QFTheoretical formulation, which gives a different crossection and trajectory for e- nearing e+ than another e-
Nov
16
answered How does charge work if photons are neutral?
Nov
16
comment Isn't a single Quantum one single string?
@Neo the pattern arises because those dimension are chosen for the string theory where the standard model particles can be accomodated in the resonance pattern (symmetry groups)according to their quantum numbers. That is why we need ten dimensional strings at least, so that the groups describing the elementary particles can be accomodated.
Nov
16
comment Isn't a single Quantum one single string?
@Neo, the simple answer to the title question is "No". The "quantization" of strings has a third hand connection with the quantum of an energy exchange, or the quanta of other operator variables . Strings classically have various intrinsic resonances depending on their length. The strings in string theory also display this structure which has been identified, according to the quantum numbers of the levels, with the elementary particles of the standard model table. en.wikipedia.org/wiki/Standard_Model,( a shorthand for all of the experimental elementary particle data).
Nov
16
comment Calculational method for determining surface tensions from photograph of menisci?
Have a look at this simple link : ehow.com/how_6019173_calculate-surface-tension.html . There is a formula for getting newtons/meter . You cannot do it just from a photograph if you do not know the temperature. Yes, the slit is covered with water because of surface tension. You could make wider and wider slits until this no longer happens and then use approximations to calculate the tension, given temperature. Complicated method. (this refers to your related slit question)
Nov
16
comment Why does water make a liquid film?
I agree with dmckee that the questions are related. I am giving you a +1 to the question so you can have points and be able to comment.
Nov
16
revised Calculational method for determining surface tensions from photograph of menisci?
grammar correction
Nov
15
revised What are the properties and characteristics of a single Quantum?
grammar in title
Nov
15
comment What are the properties and characteristics of a single Quantum?
from the Webster dicitonary, definition of "plural":1 : of, relating to, or constituting a class of grammatical forms usually used to denote more than one or in some languages more than two . (plural: quanta means that if you have got more than one quantum, say two, you do not say you have "two quantums", you say you have "two quanta". A (one) quantum of energy in quantum mechanics is called "quantum"
Nov
15
comment Why is cold fusion considered bogus?
@EricWalker I agree, and that is why I keep an open mind to beconvinced once experiments become convincing.
Nov
14
revised Simulating a proton
added 199 characters in body
Nov
14
answered Simulating a proton
Nov
14
answered What would happen to a person that was inside the Large Hadron Collider when it is turned on?