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visits member for 3 years, 9 months
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isidore.john.r at gmail dot com


Mar
11
awarded  Popular Question
Dec
24
comment Calculate exact time of Solar midnight
related: Local solar time function from UTC and longitude gives answer for the opposite direction: real time -> solar time. Compute shadow length using PyEphem demonstrates how to find semi-programmatically the next (real) time from sun_altitude(time) = known_altitude equation.
Dec
15
awarded  Editor
Dec
15
revised Why does the atmosphere rotate along with the earth?
perimeter should be used instead of diameter to estimate earth's surface speed due to rotation
Nov
24
awarded  Nice Answer
Nov
14
awarded  Yearling
Jan
31
awarded  Scholar
Jan
31
accepted How many bytes can the observable universe store?
Jan
29
awarded  Student
Jan
29
comment How many bytes can the observable universe store?
@space_cadet: yes, the questions are very similar, but 1. @tylerl's question explicitly requires 3D ("without assuming more dimensions") Could additional dimensions be used? 2. The second difference is additivity: do 10 cc contain 10 times more information exactly (or there could be an interaction that allows more than 10 times)? 3. Does the the accepted answer physics.stackexchange.com/questions/2281/… is the only possible approach?
Jan
29
comment How many bytes can the observable universe store?
Is it a coincidence that this is similar to an estimation: {number of possible baryon states}^{number of baryons} i.e.,constant^{10^80}.
Jan
28
asked How many bytes can the observable universe store?
Nov
22
awarded  Teacher
Nov
22
answered Books that develop interest & critical thinking among high school students
Nov
22
awarded  Supporter
Nov
22
answered Why does the atmosphere rotate along with the earth?