Physics - Q&A

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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

special-relativity

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How do constraints work in Lagrangian systems?

1 answer · posted over 1 year ago by Ezekiel‭ · last activity over 1 year ago by Derek Elkins‭

classical-mechanics lagrangian-formalism constrained-dynamics differential-geometry

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What is inflation in cosmology?

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

inflation cosmology

77%

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How does probability conservation work in Dirac's original formulation of relativistic QM?

1 answer · posted over 1 year ago by Ezekiel‭ · last activity over 1 year ago by Derek Elkins‭

special-relativity quantum-mechanics hilbert-space dirac-equation normalization

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Should I always write units in equation no matter if it looks like variable?

2 answers · posted 10mo ago by deleted user · last activity 10mo ago by Canina‭

units

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What is the meaning that the universe is flat?

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

universe

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How are the assumptions behind two ways of deriving the Rayleigh-Jeans law related?

1 answer · posted 7mo ago by HDE 226868‭ · last activity 7mo ago by Derek Elkins‭

thermodynamics blackbody-radiation

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Is it possible to derive the Dieterici equation starting from assumptions about microstates?

0 answers · posted 10mo ago by HDE 226868‭

statistical-mechanics thermodynamics gases

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What is "order" and "disorder" in entropy?

2 answers · posted 10mo ago by deleted user · last activity 10mo ago by Derek Elkins‭

thermodynamics entropy

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What is virtual work?

1 answer · posted 12mo ago by deleted user · last activity 6mo ago by deleted user

classical-mechanics forces virtual-work

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Calculate Center of Thrust

1 answer · posted 9mo ago by Josh Hyatt‭ · last activity 9mo ago by Olin Lathrop‭

force

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How can the kinetic energy equation be intuitively understood?

3 answers · posted 8mo ago by gmcgath‭ · last activity 8mo ago by celtschk‭

classical-mechanics energy

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Why series springs behave like parallel? A comparison between parallel resistance and series spring.

1 answer · posted 7mo ago by deleted user · last activity 7mo ago by Olin Lathrop‭

classical-mechanics springs resistance

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What happens if an electron collides with a proton?

2 answers · posted 12mo ago by deleted user · edited 12mo ago by deleted user

electrodynamics atoms electrons protons

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What is Ether theory? (I think the book I read is misinterpreting Ether)

2 answers · posted 10mo ago by A person who doesn't know anything‭ · edited 10mo ago by A person who doesn't know anything‭

special-relativity relativity revolution aether

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What is semiholonomic?

1 answer · posted 11mo ago by Anonymous‭ · last activity 11mo ago by HDE 226868‭

semi-holonomic

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What's the meaning of "outdated" in physics?

1 answer · posted 8mo ago by deleted user · last activity 7mo ago by Mithrandir24601‭

terminology

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Why we can't find a particle accelerating unless there's some other particle accelerating somewhere else?

3 answers · posted 12mo ago by deleted user · last activity 12mo ago by Olin Lathrop‭

classical-mechanics force

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Motion of charged particle inside a magnetic field

0 answers · posted 1y ago by MissMulan‭ · edited 12mo ago by MissMulan‭

classical-mechanics electrodynamics electromagnetism lorentz

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Should Earth's moon colonies being deep underground ensure natural heating?

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

Moon

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Applying Young-Laplace equation on meniscus formed due to rise of liquid on a single plate

0 answers · posted over 1 year ago by TripleFault‭

pressure young-laplace

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Interaction terms in Srednicki's proof of spin-statistics theorem

1 answer · posted over 1 year ago by Ezekiel‭ · last activity over 1 year ago by Mithrandir24601‭

quantum-field-theory spin-statistics

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Calculating Max humidity for a house

0 answers · posted 6mo ago by re89j‭

humidity temperature

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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

pressure

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What does Lagrangian actually represent?

2 answers · posted 12mo ago by deleted user · last activity 11mo ago by deleted user

lagrangian-formalism

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May it be that there are more than 8/9 planets in our solar system?

1 answer · posted 7mo ago by deleted user · last activity 7mo ago by Canina‭

planet

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Is that electron which jumps from one stationary state to another?

1 answer · posted 7mo ago by deleted user · last activity 7mo ago by Olin Lathrop‭

quantum-mechanics atoms electrons particle-physics bohr-model

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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

superconductor alternating-current

60%

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Clear up confusion on Minkowski signature

1 answer · posted 8mo ago by deleted user · edited 8mo ago by deleted user

special-relativity minkowski-metric coordinate-systems metric-tensor

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Conductivity with angle of light

1 answer · posted 7mo ago by MissMulan‭ · last activity 7mo ago by Olin Lathrop‭

light solid-state optics semiconductor photons

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What does Laplace operator represent?

1 answer · posted 9mo ago by deleted user · last activity 8mo ago by deleted user

laplace

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What's the importance of Poisson brackets?

0 answers · posted 11mo ago by deleted user · edited 11mo ago by deleted user

hamilton-dynamics hamilton-formalism poisson-brackets

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Calculating Surface temperatures of a thermal insulator

1 answer · posted 6mo ago by re89j‭ · last activity 6mo ago by Olin Lathrop‭

thermodynamics temperature

60%

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What happens if an electron collides with another electron?

0 answers · posted 12mo ago by deleted user

electrodynamics atoms electrons protons

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Find position of a particle at a time

1 answer · posted 12mo ago by MissMulan‭ · last activity 12mo ago by celtschk‭

time newtonian-mechanics forces

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Find jerk of time varying force

1 answer · posted 1y ago by MissMulan‭ · last activity 12mo ago by Mithrandir24601‭

newtonian-mechanics potential-energy acceleration

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Superconductivity

0 answers · posted 12mo ago by MissMulan‭

solid-state superconductivity

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Signal modeling as only digital, only analogue, or as both

3 answers · posted 1y ago by deleted user · last activity 12mo ago by Lundin‭

signal-processing

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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

lenses

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What is $\mathcal{O}$ in integration of potential?

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

electromagnetism potential-energy potential

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Magnetic charges to solve interaction between 2 magnetic dipoles

1 answer · posted 1y ago by MissMulan‭ · last activity 1y ago by Olin Lathrop‭

electrostatics

50%

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Where did the measuring systems (metric & imperial) originate and how? [closed]

0 answers · posted 1y ago by General Sebast1an‭ · closed 10mo ago by Mithical‭

measurement metric-system imperial-system

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Natural ways to acquire gravity for a colony on earth's moon

2 answers · posted 1y ago by deleted user · last activity 12mo ago by Canina‭

Moon Gravity

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How electric displacement is proportional to surface charge?

1 answer · posted 8mo ago by deleted user · last activity 7mo ago by deleted user

electrostatics charge conductor gauss-law dielectric

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Calculate inductance using laws of electromagnetism

1 answer · posted 16d ago by MissMulan‭ · last activity 13d ago by Olin Lathrop‭

electromagnetism inductors

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What's the equation of kinetic energy of charged particle?

1 answer · posted 8mo ago by deleted user · edited 5mo ago by deleted user

electrostatics kinetic-energy lagrangian particles

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Is $E=mc^2$ true for all frame of references?

1 answer · posted 8mo ago by deleted user · edited 6mo ago by deleted user

special-relativity mass energy relativistic-mass

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Meaning of complex frequency [closed]

0 answers · posted 1mo ago by MissMulan‭ · closed 1mo ago by MissMulan‭

frequency electric-circuits

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Time dilation with current or very near technology of the next 100 years

0 answers · posted 3mo ago by deleted user

time acceleration

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What is Apsidal Vector?

0 answers · posted 11mo ago by Anonymous‭

apsidal vectors

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