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bio website lightandmatter.com
location Fullerton, California
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visits member for 2 years, 9 months
seen Mar 30 at 19:12

I teach physics at Fullerton College, a community college in Southern California. I have an undergrad degree in math and physics from Berkeley and a PhD in physics from Yale. Back when I was doing research, my field was experimental low-energy nuclear physics.


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Oct
27
comment Does our existence cost us energy?
@rijulgupta: In your example, the electric dipole moment D is zero before the neutron decays, and then after the decay it begins to attain nonzero values. This causes a change in the field, which propagates outward as a wave. This is not a static example, since D is time-varying.
Oct
27
comment Big Bang and Spherical Symmetry
@RavindraHV: I am more interested with the big bang model of the universe ... and that does indeed have a starting point . You have this backwards. Big bang models do not have a center.
Oct
27
answered Does our existence cost us energy?
Oct
27
comment Variance in speed of light
@JanDvorak: I always thought that parallel transport always by default happens along a geodesic... Not sure what you mean when you say "by default." You can parallel transport a vector along any curve. Geodesics are special because they parallel transport their own tangent vectors.