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Jan
24
reviewed Approve Direction of motion
Dec
18
revised How do voltage and voltage drops over a circuit relate to work done?
added 14 characters in body
Oct
28
answered Ways of achieving parallel rays of light?
Oct
8
comment How Galaxy is formed?
How is galaxy formed? They need to do way instain Big Bang - who kill thier galaxeis. because theese galaxy cannot fright back. :-)
Sep
21
comment What really is the smallest “mass” or “object” in the universe?
'mass always seems to keep growing' - really? Please explain.
Sep
10
comment Validity of the holographic principle
Does this make sense in the context of a universe that has no boundary?
Sep
2
answered When a ball is tossed straight up, does it experience momentary equilibrium at top of its path?
Aug
20
answered How does a dive computer calculate depth?
Aug
5
awarded  Custodian
Aug
5
reviewed Approve About an upside down cup of water against atmosphere pressure
Jul
20
answered Were there time just after the Big Bang?
Jul
14
awarded  Notable Question
Jun
28
awarded  Revival
Jun
28
answered Could we use the coriolis effect to travel
Jun
26
comment Is the universe we know just shaped due to time?
Always liked that game and the Devil's Tuning Fork - just wish they had been developed further.
Jun
5
revised Optimal way to heat liquid from the sun?
added 464 characters in body
Jun
5
answered Optimal way to heat liquid from the sun?
May
14
awarded  Custodian
May
12
comment Distance away from earth to see it as a full disk
Duplicate of this one from 2012: physics.stackexchange.com/q/25509/2498
May
10
comment What planets are visible to the naked eye from Mars?
You can actually see Europa from earth if you block out Jupiter with something. Tricky, but apparently doable - I haven't managed it, but have seen all four moons easily with cheap binoculars.