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energy-conservation
quantum-information
charge
nuclear-physics
pressure
mass
gauge-theory
soft-question
space-expansion
thermodynamics
differential-geometry
work
condensed-matter
conservation-laws
fluid-dynamics
atomic-physics
water
electromagnetism
statistical-mechanics
quantum-mechanics
magnetic-fields
potential-energy
relativity
quantum-entanglement
lagrangian-formalism
terminology
symmetry
electrical-resistance
solid-state-physics
wavefunction
energy
resource-recommendations
group-theory
reflection
spacetime
orbital-motion
potential
general-relativity
semiconductor-physics
hamiltonian-formalism
classical-mechanics
rotational-dynamics
collision
newtonian-mechanics
time
angular-momentum
astronomy
waves
gravity
experimental-physics
quantum-field-theory
newtonian-gravity
mathematical-physics
tensor-calculus
speed-of-light
standard-model
electric-current
forces
electrons
field-theory
acceleration
visible-light
electrostatics
electromagnetic-radiation
material-science
reference-frames
kinematics
quantum-electrodynamics
schroedinger-equation
quantum-spin
vectors
optics
operators
photons
temperature
special-relativity
electric-circuits
entropy
black-holes
metric-tensor
friction
particle-physics
astrophysics
cosmology
harmonic-oscillator
radiation
velocity
homework-and-exercises
electricity
scattering
laser
acoustics
renormalization
momentum
capacitance
electric-fields
everyday-life
hilbert-space
string-theory
universe
What's the difference between low energy photons and high energy photons?
electromagnetic-radiation
photons
How can quantum entanglement be explained in layman terms
quantum-mechanics
field-theory
quantum-entanglement
what does trion emission mean in PL spectrum?
quantum-mechanics
How are frames of reference releated to each other in general realitivity?
general-relativity
differential-geometry
Check that a sinousoidal wave satisfyes Maxwell eqns.?
electromagnetic-radiation
maxwell-equations
Can we make the spectrum decomposition of the Hamiltonian and the density matrix with the same basis?
quantum-mechanics
hamiltonian
density-operator
DAE else see rainbows around recessed lights?
visible-light
experimental-physics
vision
What's the maximum possible speed with which a satellite can orbit the earth?
gravity
satellites
How does QFT help with entanglement?
quantum-mechanics
quantum-field-theory
special-relativity
quantum-entanglement
Bottle stability optimization
homework-and-exercises
rotational-dynamics
collision
stability
Polarizability in harmonic oscillator
quantum-mechanics
harmonic-oscillator
polarization
Matter and antimatter ratio
particle-physics
cosmology
big-bang
antimatter
nucleosynthesis
$E=mc^2$ tells us that everything has energy. So why can't we use anything as a battery/power source?
special-relativity
energy
mass-energy
antimatter
batteries
Mean anomaly hyperbolic orbit
orbital-motion
Can photons interact with pions to mediate the strong force between nucleons?
quantum-chromodynamics
pions
Can we get real image of virtual objects?
optics
visible-light
geometric-optics
Lower critical Reynolds number
fluid-dynamics
definition
flow
Relativity in Light Communication
homework-and-exercises
speed-of-light
time
velocity
time-dilation
What can I do to be invisible for the IR-camera on board of a police helicopter?
thermodynamics
thermal-radiation
thermal-conductivity
Why there is no dipole gravitational wave?
general-relativity
quantum-spin
gravitational-waves
dipole
multipole-expansion
Understanding internal torques
newtonian-mechanics
torque
solid-mechanics
Quark Probabilities
probability
quarks
color-charge
Magnetic fields in transformers and back emf?
electromagnetism
magnetic-fields
induction
Trace distance localized in subsystems
quantum-mechanics
quantum-information
quantum-computer
Photoelectric effect current's dependence on frequency based on PhET simulation
electric-current
simulations
frequency
software
photoelectric-effect
A doubt about collisions and conservation of momentum
newtonian-mechanics
momentum
collision
Why must the conformal anomaly on string worldsheet be cancelled?
string-theory
conformal-field-theory
quantum-anomalies
HVAC enegery balance confusion
thermodynamics
energy-conservation
Creating Visual Displays of Calculations and Solutions
education
Quantum electrodynamics extended with a special topological term
quantum-field-theory
topological-field-theory
From Liénard-Wiechert to Feynman potential expression
electromagnetism
potential
lienard-wiechert
Work done in rotating electric dipole in uniform field
electrostatics
work
rotation
Lagrangian of a Relativistic Harmonic Oscillator
special-relativity
lagrangian-formalism
harmonic-oscillator
Why is it possible to derive the infinitesimal rotation matrix by small angle approximations?
rotational-dynamics
coordinate-systems
rotation
Do Maxwell's equations imply that still charges produce electrostatic fields and no magnetic fields?
electromagnetism
electrostatics
$\Delta \ell = 0, \ell = 0 \rightarrow \ell = 0$ transition in atomic ground state
atomic-physics
laser
cold-atoms
Help me to understand work as transferred energy
newtonian-mechanics
forces
work
free-body-diagram
Does the scalar magnetic potential equal the electric potential?
electromagnetism
magnetic-fields
electric-fields
potential
Pulley with inner and outer grooves
homework-and-exercises
newtonian-mechanics
string
One weird question about double-slit experiment
quantum-mechanics
double-slit-experiment
Energy momentum tensor of a perfect fluid with vanishing density?
general-relativity
fluid-dynamics
stress-energy-momentum-tensor
Electromagnetic shielding with metal box and wire inside
electromagnetism
electromagnetic-radiation
electricity
Rocket Question
rocket-science
Earth's gravitational Field vs. Mars's and Venus
astrophysics
planets
solar-system
geophysics
What is the pull force of Earth's magnetic field per square metre on one of the magnetic poles?
forces
magnetic-fields
earth
geomagnetism
True or false: the Moon was touching the Earth 1.2 billion years ago
orbital-motion
earth
solar-system
moon
tidal-effect
What are the wavelength boundaries of Rayleigh scattering (say <1%)?
electromagnetism
scattering
How do quarks interact with the Higgs field?
electrons
standard-model
higgs
quarks
chirality
Light behaves as a fluid under certain conditions. In the absence of certain conditions, will baryon matter behave as light?
optics
condensed-matter
states-of-matter
Hermitian operator followed by another hermitian operator is it also hermitian?
quantum-mechanics
operators
hilbert-space
commutator
observables
Why is an exciton only observed when we excite to the conduction band and not to other electronic level inside the bandgap?
optics
semiconductor-physics
spectroscopy
How come that in an AC curcuit with one resistor $i_R \geq \Delta v_R$?
electric-circuits
What's the difference between work done and work obtained?
newtonian-mechanics
newtonian-gravity
work
potential-energy
conventions
Fastest way to melt ice cubes in glass of water
everyday-life
water
air
thermal-conductivity
ice
Distance Separating Two Lenses Given Given Magnification
optics
lenses
Why does Fermi Level change due to change in donor atom concentration?
condensed-matter
solid-state-physics
semiconductor-physics
chemical-potential
Hot water molecules from a cup
thermodynamics
fluid-dynamics
Atomic radius - ask an atomic physicist or chemist?
atomic-physics
physical-chemistry
atoms
Does atomic physicist deal with atomic radius of an atom?
atomic-physics
physical-chemistry
Interpretation of Reynolds Transport Theorem?
fluid-dynamics
Gauged Linear Sigma Model (GLSM) with target space $E^8$ gauge group
string-theory
gauge-theory
instantons
sigma-models
Rigid body rotation and translation about an arbitrary axis
rotational-dynamics
rigid-body-dynamics
Can a particle be identified when one knows $\left<dE/dx\right>$ and the Cherenkov angle $\theta_c$?
particle-physics
experimental-physics
data-analysis
elementary-particles
cherenkov-radiation
Gauge invariance is just a redundancy. Why is massive abelian gauge field renormalizable but massive non-abelian gauge field nonrenormalizable?
quantum-field-theory
gauge-theory
renormalization
List of topics covered in classical mechanics?
classical-mechanics
Can there be a potential difference perpendicular to induced electric field?
electromagnetism
electric-circuits
electromagnetic-induction
Relation between displacement current, dielectric and time varying Electric field
maxwell-equations
dielectric
Thermodynamics Rate of Heat Transfer Question!
thermodynamics
particle-physics
Is there any meaningful evidence for the existence of the multiverse?
string-theory
big-bang
multiverse
Random phase approximation for interacting electron gas
quantum-field-theory
statistical-mechanics
condensed-matter
electrons
feynman-diagrams
What does the solution to a wave equation represent?
waves
Wick rotations, convergence and Feynman propagators?
quantum-field-theory
path-integral
regularization
wick-rotation
analyticity
Original derivation of the Josephson effect
superconductivity
second-quantization
josephson-junction
Question on the Rydberg - Ritz Fromula
homework-and-exercises
atomic-physics
Obstruction in calculating $\mathcal{Z}_{\mathcal{N}=1}$ SYM partition function
quantum-field-theory
gauge-theory
supersymmetry
renormalization
partition-function
How Do I solve this problem related to gear trains?
homework-and-exercises
kinematics
rotational-kinematics
geometry
During maximum extension of a spring kinetic energy is equal to potential energy how?
newtonian-mechanics
energy
work
potential-energy
spring
Review the answer
homework-and-exercises
newtonian-mechanics
centripetal-force
Velocity of a body in free fall
newtonian-mechanics
projectile
drag
free-fall
What is a diabolical point?
terminology
chaos-theory
non-linear-systems
complex-systems
Quantization of the Kalb-Ramond field
string-theory
gauge-theory
Spherical shape falling velocity/acceleration calculations
gravity
acceleration
velocity
drag
String Theory as Career
string-theory
soft-question
education
What is the difference between Young's double hole experiment and Young's double slit experiment?
waves
double-slit-experiment
interference
Does pure yellow exist in variations we can't discern?
visible-light
electromagnetic-radiation
vision
biology
Electromagnetic Induction. The electric field due to a conducting loop in a changing magnetic field
electromagnetic-induction
Owen Biesel's paper on 'The Precession of Mercury’s Perihelion'
general-relativity
integration
precession
Ball swung in a horizontal circle, can the string ever by exactly horizontal to the ground?
classical-mechanics
Could an object move infinitely if any other forces does not affect it?
forces
energy
gravity
The interrelation of the different forms of coupling constants
quantum-field-theory
renormalization
Proof of Orthogonality of Hydrogen Atom Wave Functions
quantum-mechanics
wavefunction
hilbert-space
mathematics
hydrogen
Electron configuration of atom under LS coupling
term-symbols
what is the effect of using different pipe sizes in the inlet and outlet from the storage tank?
fluid-dynamics
What's the path of least action for fermions off-shell?
lagrangian-formalism
path-integral
variational-principle
dirac-equation
How come the pole strength be having dimensions Ampere meter
electromagnetism
electric-current
units
dimensional-analysis
si-units
Numerical simulation of mechanics problem
simulations
newtonian-gravity
velocity
software
Centre of Mass and collisions
homework-and-exercises
newtonian-mechanics
collision
Decouple differential equations
homework-and-exercises
newtonian-mechanics
newtonian-gravity
differential-equations
Von Neumann Entropy of pure and mixed states
quantum-mechanics
quantum-information
quantum-entanglement
density-operator
entanglement-entropy
A heavy chain with upper end falling with constant velocity
homework-and-exercises
newtonian-mechanics