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Q&A

General Q&A about physics of any type and at any level

81%
+7 −0
Unusual way to write spacetime coordinates/metric: Is there any downside?

1 answer  ·  posted over 1 year ago by celtschk‭  ·  last activity over 1 year ago by dmckee‭

80%
+6 −0
What is inflation in cosmology?

2 answers  ·  posted over 1 year ago by deleted user  ·  last activity 1y ago by deleted user

77%
+5 −0
Should I always write units in equation no matter if it looks like variable?

2 answers  ·  posted 12mo ago by deleted user  ·  last activity 12mo ago by Canina‭

75%
+4 −0
What is the meaning that the universe is flat?

2 answers  ·  posted 1y ago by deleted user  ·  last activity 1y ago by celtschk‭

71%
+3 −0
71%
+3 −0
What is virtual work?

1 answer  ·  posted 1y ago by deleted user  ·  last activity 8mo ago by deleted user

71%
+3 −0
What is "order" and "disorder" in entropy?

2 answers  ·  posted 11mo ago by deleted user  ·  last activity 11mo ago by Derek Elkins‭

71%
+3 −0
Calculate Center of Thrust

1 answer  ·  posted 11mo ago by Josh Hyatt‭  ·  last activity 11mo ago by Olin Lathrop‭

66%
+2 −0
What is semiholonomic?

1 answer  ·  posted 1y ago by Anonymous‭  ·  last activity 1y ago by HDE 226868‭

66%
+2 −0
66%
+2 −0
What's the meaning of "outdated" in physics?

1 answer  ·  posted 9mo ago by deleted user  ·  last activity 9mo ago by Mithrandir24601‭

66%
+2 −0
Should Earth's moon colonies being deep underground ensure natural heating?

1 answer  ·  posted over 1 year ago by deleted user  ·  last activity over 1 year ago by Dave Tweed‭

66%
+2 −0
66%
+2 −0
62%
+3 −1
What does Lagrangian actually represent?

2 answers  ·  posted 1y ago by deleted user  ·  last activity 1y ago by deleted user

62%
+3 −1
Why should there not be water below 6kms in the Earths crust?

0 answers  ·  posted over 1 year ago by Conrado‭  ·  edited over 1 year ago by Conrado‭

60%
+1 −0
What does Laplace operator represent?

1 answer  ·  posted 11mo ago by deleted user  ·  last activity 10mo ago by deleted user

60%
+1 −0
Conductivity with angle of light

1 answer  ·  posted 8mo ago by MissMulan‭  ·  last activity 8mo ago by Olin Lathrop‭

60%
+1 −0
Calculating Surface temperatures of a thermal insulator

1 answer  ·  posted 8mo ago by re89j‭  ·  last activity 8mo ago by Olin Lathrop‭

60%
+1 −0
May it be that there are more than 8/9 planets in our solar system?

1 answer  ·  posted 8mo ago by deleted user  ·  last activity 8mo ago by Canina‭

60%
+1 −0
60%
+4 −2
Would we need Alternating Current if superconducting wires existed?

2 answers  ·  posted over 1 year ago by theabbie‭  ·  last activity over 1 year ago by celtschk‭

60%
+1 −0
Find position of a particle at a time

1 answer  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by celtschk‭

60%
+1 −0
Signal modeling as only digital, only analogue, or as both

3 answers  ·  posted 1y ago by deleted user  ·  last activity 1y ago by Lundin‭

60%
+1 −0
57%
+2 −1
Why would a 1.74 index lens be more prone to chip and be less resilient than 1.67?

1 answer  ·  posted over 1 year ago by VLDR‭  ·  last activity over 1 year ago by Olin Lathrop‭

50%
+1 −1
50%
+0 −0
50%
+0 −0
Meaning of complex frequency [closed]

0 answers  ·  posted 3mo ago by MissMulan‭  ·  closed 3mo ago by MissMulan‭

50%
+1 −1
Natural ways to acquire gravity for a colony on earth's moon

2 answers  ·  posted over 1 year ago by deleted user  ·  last activity 1y ago by Canina‭

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