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bio website williewong.wordpress.com
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visits member for 3 years, 10 months
seen Oct 13 at 7:46

Mathematician


Aug
20
comment Trapping a lightray
@John: geometric optics works well enough for us (and our ancestors) to build working eye glasses and telescopes, in spite of the fact that the thin lens approximation may not always be valid. Newton's original laws of motion runs counter to the "physical intuition" of Aristotles because in the real world there is friction and a ball doesn't go on rolling forever. Idealisation and abstraction are powerful aids to problem solving, and have long traditions in physics.
Aug
19
comment Trapping a lightray
@john: the user did say "photon" and "perfectly reflecting". The former (particle assumption) validates the lack of diffraction, the latter validates the lack of absorption.
Jul
4
reviewed Leave Open Why do we take small steps while walking on ice?
Jul
4
awarded  Custodian
Jul
4
reviewed Reopen In which direction do gravitons travel? Do they originate from mass or are they collected by masses?
Jul
4
reviewed No Action Needed Why don't planets have Circular orbits?
Jul
4
reviewed Approve suggested edit on Is the G2 Lie algebra useful for anything?
Jul
4
reviewed Approve suggested edit on Interaction ranges in the Standard Model - Electrodynamics vs QCD
Jul
4
reviewed Approve suggested edit on Matter-Antimatter Asymmetry in Experiments?
Jul
4
reviewed Approve suggested edit on What Do We Get From Having Higher Generations of Particles?
Jul
4
reviewed Leave Open Dimensions in lagrangian potential
Jul
4
reviewed Close The metric Tensor inside a massive shell
Jul
4
reviewed Close Expressing a force in components
Jul
4
reviewed Leave Open Why airplanes fly: the final truth
Jul
4
reviewed Close Difference between ways of transmitting power
Jul
4
reviewed Leave Open Why is quantum mechanics based on probability theory?
Jul
4
reviewed Close Why Are Maxwell's Equations Preferred Before Those Proposed by H. Hertz?
Jul
4
awarded  Custodian
Jul
4
reviewed Leave Open Is String Theory proven to be finite?
Jun
6
awarded  Nice Answer