User Superfast Jellyfish

115 votes

Would visible light still be in a separate classification if we saw "colors" in a different wavelength?

answered Feb 9, 2020 at 20:32

84 votes

Accepted

How is it possible there are UV photos while our eyes cannot detect UV waves?

optics electromagnetic-radiation

answered Feb 1, 2020 at 19:33

41 votes

Accepted

Why do metals have free electrons?

electricity conductors metals

answered Aug 25, 2020 at 15:22

34 votes

Applying the principle of Occam's Razor to Quantum Mechanics

quantum-mechanics

answered Jun 2, 2020 at 11:54

34 votes

Accepted

Which mathematical property allows us to combine proportional relationships?

classical-mechanics mathematics

answered Feb 6, 2020 at 13:46

22 votes

Is a classical laser possible?

quantum-mechanics laser classical-electrodynamics

answered Feb 25, 2020 at 13:04

20 votes

Given fluids expand non-linearly, how were physicists able to make a linear temperature scale?

thermodynamics experimental-physics temperature experimental-technique

answered Feb 1, 2020 at 7:59

17 votes

Why do our hands feel warm when we rub them?

thermodynamics temperature everyday-life

answered Mar 3, 2020 at 15:06

15 votes

Can we revert back a broken egg into the original one? Given that we are allowed to increase entropy in some other part of the system

thermodynamics statistical-mechanics entropy time arrow-of-time

answered Feb 8, 2020 at 17:23

13 votes

If electrons are identical and indistinguishable, how can we say current is the movement of electrons?

quantum-mechanics electric-circuits electric-current quantum-electrodynamics identical-particles

answered Jun 4, 2020 at 18:45

12 votes

How does a spectral line tell us about the magnetic field of a star?

magnetic-fields spectroscopy stars absorption

answered Jan 30, 2020 at 9:01

11 votes

Accepted

How do we dampen a spring-mass system with respect to time?

newtonian-mechanics friction spring oscillators dissipation

answered Jan 29, 2020 at 16:08

10 votes

Accepted

distinguishing redshift from star's color

stars doppler-effect

answered Feb 8, 2020 at 4:57

8 votes

Principle of physics used in the lift of skateboard

newtonian-mechanics forces rotational-dynamics everyday-life free-body-diagram

answered Aug 23, 2020 at 11:07

8 votes

Accepted

Can a soap bubble bounce off a laser?

electromagnetism thermodynamics optics laser bubbles

answered Aug 28, 2020 at 6:46

8 votes

Why does fringe width in double slit experiment remain constant if slits get narrower?

waves visible-light double-slit-experiment interference diffraction

answered Jun 9, 2020 at 9:03

7 votes

Accepted

Why is electric field in an insulator non zero?

electrostatics electric-fields insulators

answered Jun 4, 2020 at 9:02

7 votes

Conduction band confusion

semiconductor-physics

answered Jan 29, 2020 at 13:39

7 votes

Accepted

Intuitive explanation why rate of energy transfer depends on difference in energy between two materials?

thermodynamics energy temperature cooling

answered Mar 7, 2020 at 12:36

7 votes

Accepted

How do light interference patterns correspond to the particle nature of light?

wave-particle-duality

answered Feb 27, 2020 at 6:09

6 votes

Accepted

Is the boundary between ferromagnetism and paramagnetism well-defined?

electromagnetism magnetic-moment ferromagnetism

answered Mar 2, 2020 at 14:41

6 votes

Accepted

Laws of Physics

universe laws-of-physics

answered Mar 14, 2020 at 9:10

6 votes

Accepted

Why is the milk falling in a spiral here?

fluid-dynamics everyday-life

answered Aug 26, 2020 at 12:58

5 votes

Accepted

Why does a physical theory need to be testable?

experimental-physics models foundations laws-of-physics

answered Aug 26, 2020 at 7:34

5 votes

Does electron orbital theory contradict the Heisenberg uncertainty principle?

quantum-mechanics electrons heisenberg-uncertainty-principle atoms orbitals

answered Aug 22, 2020 at 8:55

5 votes

Accepted

$\nabla \times \bf{u} \neq 0$ but $\oint_{c} \bf{u} \cdot \textit{d}r \textit{=0}$?

differential-geometry vector-fields calculus vortex conservative-field

answered Jun 9, 2020 at 8:44

5 votes

Is the average force calculated from $F(x)$ the same as that calculated from $F(t)$?

newtonian-mechanics forces momentum work integration

answered May 12, 2020 at 23:53

5 votes

Accepted

Why an object with a velocity of 11.2 km/s only enter space?

newtonian-gravity escape-velocity

answered Mar 5, 2020 at 6:00

5 votes

Accepted

How do materials absorb light?

quantum-mechanics electromagnetic-radiation photons resonance

answered Feb 27, 2020 at 13:47

5 votes

Ionizing radiation in thermal radiation

thermal-radiation

answered Feb 26, 2020 at 6:06

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300 Answers

Would visible light still be in a separate classification if we saw "colors" in a different wavelength?

How is it possible there are UV photos while our eyes cannot detect UV waves?

Why do metals have free electrons?

Applying the principle of Occam's Razor to Quantum Mechanics

Which mathematical property allows us to combine proportional relationships?

Is a classical laser possible?

Given fluids expand non-linearly, how were physicists able to make a linear temperature scale?

Why do our hands feel warm when we rub them?

Can we revert back a broken egg into the original one? Given that we are allowed to increase entropy in some other part of the system

If electrons are identical and indistinguishable, how can we say current is the movement of electrons?

How does a spectral line tell us about the magnetic field of a star?

How do we dampen a spring-mass system with respect to time?

distinguishing redshift from star's color

Principle of physics used in the lift of skateboard

Can a soap bubble bounce off a laser?

Why does fringe width in double slit experiment remain constant if slits get narrower?

Why is electric field in an insulator non zero?

Conduction band confusion

Intuitive explanation why rate of energy transfer depends on difference in energy between two materials?

How do light interference patterns correspond to the particle nature of light?

Is the boundary between ferromagnetism and paramagnetism well-defined?

Laws of Physics

Why is the milk falling in a spiral here?

Why does a physical theory need to be testable?

Does electron orbital theory contradict the Heisenberg uncertainty principle?

$\nabla \times \bf{u} \neq 0$ but $\oint_{c} \bf{u} \cdot \textit{d}r \textit{=0}$?

Is the average force calculated from $F(x)$ the same as that calculated from $F(t)$?

Why an object with a velocity of 11.2 km/s only enter space?

How do materials absorb light?

Ionizing radiation in thermal radiation