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This badge has been awarded 427 times. Recently awarded to:
dec 9 at 3:17
Particles for all forces: how do they know where to go, and what to avoid? — anna v 25.8k11843
dec 8 at 14:07
What's the difference between space and time? — John Rennie 44.2k12471
dec 8 at 0:02
Instantons, anomalies, and 1-loop effects — Zohar Ko 99526
dec 6 at 18:56
Physics of Focusing a Laser — ptomato 2,036921
dec 5 at 13:25
Why are Navier-Stokes equations needed? — tpg2114 1,660520
nov 30 at 19:29
Why does pizza cheese seem hotter than the crust? — John Rennie 44.2k12471
nov 30 at 14:44
Can I take heat from the air and convert it to electricity? — Claudius 1,684422
nov 30 at 14:44
Roughly how many atoms thick is the layer of graphite left by a pencil writing on paper? — Tim 30925
nov 29 at 11:39
What causes a ring-like image around light of the moon? — Miguel Dovale 417212
nov 28 at 14:44
Lay explanation of the theory of relativity? — Nick Gotch 25424
nov 13 at 0:19
Energy conservation in General Relativity — Jerry Schirmer 10.4k11837
nov 12 at 15:33
Have I discovered how to calculate the proton's mass using only integers? — Emilio Pisanty 7,2051834
nov 2 at 3:09
What is the difference between weight and mass? — Lagerbaer 6,2611734
oct 30 at 14:48
Is fire matter or energy? — wnoise 549411
oct 30 at 10:27
(post deleted or otherwise unavailable) — Curious 498217
oct 29 at 4:54
Are gravitational waves longitudinal or transverse? — FrankH 4,7701623
oct 26 at 10:13
Is it possible to travel at precisely the speed of sound? — Ron Maimon 44.8k245121
oct 25 at 7:47
How Felix Baumgartner has reached the speed of sound quickly — Ϛѓăʑɏ βµԂԃϔ 5,28231037
oct 24 at 6:32
Did Felix Baumgartner produce a sonic boom during his jump? — Ϛѓăʑɏ βµԂԃϔ 5,28231037
oct 24 at 6:32
Is Melancholia's orbit impossible? — Rex Kerr 1,09549
oct 22 at 1:21
What is the length of 1 second in meters — Prathyush 708310
oct 15 at 5:46
Do mirrors increase the amount of light in a room? — Phil M 11612
oct 12 at 20:18
Energy in bolognese reduction - lid on or off? — John Rennie 44.2k12471
oct 11 at 19:08
What is the physical significance of dot & cross product of vectors? Why is division not defined for vectors? — nibot 3,93311233
oct 11 at 7:18
Einstein's special relativity beyond the speed of light — David Zaslavsky♦ 27.4k448112
oct 8 at 6:06
Why doesn't a fly fall off the wall? — John Rennie 44.2k12471
oct 5 at 23:23
Detection of the Electric Charge of a Black Hole — Ted Bunn 11.6k11537
oct 5 at 5:37
Which citizen-science astrophysics and astronomy projects currently exist? — Stuart Robbins 3,381915
oct 3 at 5:56
Are all central forces conservative? Wikipedia must be wrong — Jerry Schirmer 10.4k11837
sep 28 at 2:13
Can someone explain the color Pink to me? — garyp 32124
sep 26 at 0:22
Why is Light invisible? — Dolf 18912
sep 25 at 10:51
Is time continuous? — Arnold Neumaier 13.9k1541
sep 22 at 22:29
Why is torque not measured in Joules? — Joe 29526
sep 20 at 2:07
What does the dual of a tensor mean (e.g. dual stress tensor in relativistic ED)? — Cristi Stoica 965510
sep 19 at 23:52
273 + degree Celsius = Kelvin. Why 273? — Luboš Motl 67.7k466141
sep 17 at 10:50
References about rigorous thermodynamics — Zoltan Zimboras 17614
sep 14 at 19:45
Why does your reflection stay the same size when you move further away from the mirror? — Cristi Stoica 965510
sep 14 at 15:49
How do we know Dark Matter is non baryonic? — zhermes 4,324619
sep 14 at 14:04
Why does the moon face earth with the same side? — Noldorin 2,6041224
sep 13 at 18:28
Why don't rockets tip over when they launch? — Ϛѓăʑɏ βµԂԃϔ 5,28231037
sep 12 at 13:12
Does juggling balls reduce the total weight of the juggler and balls? — John Rennie 44.2k12471
sep 7 at 4:16
Irreducible tensors concept — twistor59 6,7741924
sep 4 at 14:04
Is fire plasma? — Mitchell 1,06036
sep 3 at 19:03
Why is there a photon every millimeter on earth coming from a star millions of light years away? — Luboš Motl 67.7k466141
sep 3 at 16:03
Why is electricity not transmitted wirelessly? — Martin Beckett 11.1k1030
sep 2 at 18:53
What is the math knowledge necessary for starting Quantum Mechanics? — Physicsworks 68637
aug 30 at 12:31
What is the possibility of a railgun assisted orbital launch? — Dr. Jeffrey Berger 25412
aug 21 at 8:06
Why doesn't the percentage of oxygen in Earth's atmosphere diminish significantly with altitude? — Nathaniel 6,21911335
aug 18 at 9:43
How does a car turn without any skidding? — Rody Oldenhuis 1,394215
aug 18 at 9:43
Does the mass of a battery's change when charged/discharged? — Luboš Motl 67.7k466141
jul 19 at 18:28
Finding Directions using moon — Ben Hocking 30026
jul 17 at 23:15
Would it matter if the Earth rotated clockwise? — Thaddeus 46535
jul 13 at 0:43
Why you need a graviton when you have the higgs boson? — Ron Maimon 44.8k245121
jul 10 at 5:11
How do photons travel at a speed that should be impossible to attain? — Sachin Shekhar 1,005517
jul 5 at 13:06
What is a mass gap? — Ron Maimon 44.8k245121
jul 1 at 1:09
Could the Periodic Table have been done using group theory? — Luboš Motl 67.7k466141
jun 28 at 0:32
Where are the Voyagers going? — Keith Thompson 4,3711025
jun 25 at 19:17
Direct observations of a black hole? — David Zaslavsky♦ 27.4k448112
jun 18 '12 at 9:40
What differs string theory from philosophy or religion? — Arnold Neumaier 13.9k1541
jun 16 '12 at 7:44
What is the relationship between kinetic energy and momentum? — Lagerbaer 6,2611734
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