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12656
bio website science20.com/…
location Bangalore, India
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visits member for 4 years, 2 months
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Theoretical physicist by training, PhD in spin-polarized quantum systems. Inventor of the DPD micro-hydrodynamics simulation methodology, and specialized in computational physics. Currently chief scientist for a large multinational company. Blogger at Science2.0.


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comment Why do we form cosmological theories based on old data?
I just wonder where the strange thought "all input data into our cosmological models is from galaxies at least 7 billion light years away" comes from?
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revised What causes the specific pattern of sparkly light from a laser pointer
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revised What causes the specific pattern of sparkly light from a laser pointer
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comment One dimensional fluid flow with slowly changing cross sectional area
Lubrication approximation: en.wikipedia.org/wiki/Lubrication_theory
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answered Acceleration due to Gravity: Free Fall
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revised Is the lay explanation of the equivalence principle wrong?
typo
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revised Is the lay explanation of the equivalence principle wrong?
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answered What causes the specific pattern of sparkly light from a laser pointer
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revised Is the lay explanation of the equivalence principle wrong?
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comment Acceleration due to Gravity: Free Fall
Such a bottomless pit is called a black hole.
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revised Is the lay explanation of the equivalence principle wrong?
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answered Is the lay explanation of the equivalence principle wrong?
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awarded  Good Answer
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revised How small does sand have to be to get wet?
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revised How small does sand have to be to get wet?
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comment How small does sand have to be to get wet?
@AdamDavis - have added the requested info (confirming Rahul's estimate). Thanks.
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revised How small does sand have to be to get wet?
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revised How small does sand have to be to get wet?
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Mar
26
comment Gravitational force of a ring
@Christian - just vector-sum the gravitational force of two diametrically opposite point masses of mass $\frac12 M$ each.
Mar
26
revised Gravitational force of a ring
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