Physics, Pixelated
What Is a Superfluid, and Why Does Helium Climb...
Cool liquid helium below 2.17 kelvin and it turns into a superfluid: it pours through gaps too fine for ordinary liquids, creeps up the walls of its container and can...
What Is a Superfluid, and Why Does Helium Climb...
Cool liquid helium below 2.17 kelvin and it turns into a superfluid: it pours through gaps too fine for ordinary liquids, creeps up the walls of its container and can...
Why Do Charged Particles Spiral in a Magnetic F...
A magnetic field pushes a moving charge sideways, never forwards, so the charge curves into a circle, or a helix if it also drifts along the field. The time per...
Why Do Charged Particles Spiral in a Magnetic F...
A magnetic field pushes a moving charge sideways, never forwards, so the charge curves into a circle, or a helix if it also drifts along the field. The time per...
What Is Spaghettification? Tidal Forces Near a ...
Spaghettification is the stretching of an object by tidal forces: gravity pulls harder on the near end than the far end. Near a stellar-mass black hole it would tear a...
What Is Spaghettification? Tidal Forces Near a ...
Spaghettification is the stretching of an object by tidal forces: gravity pulls harder on the near end than the far end. Near a stellar-mass black hole it would tear a...
What Is Degeneracy Pressure, and What Holds Up ...
A white dwarf has no fusion left to hold it up. What stops it collapsing is electron degeneracy pressure: the Pauli exclusion principle forces electrons into ever-higher momentum states as...
What Is Degeneracy Pressure, and What Holds Up ...
A white dwarf has no fusion left to hold it up. What stops it collapsing is electron degeneracy pressure: the Pauli exclusion principle forces electrons into ever-higher momentum states as...
Will the Universe End in Heat Death? What Physi...
“Heat death” is the idea that the universe runs down until no energy differences are left to do work. It began with Kelvin’s 1852 dissipation paper. Modern cosmology refines it:...
Will the Universe End in Heat Death? What Physi...
“Heat death” is the idea that the universe runs down until no energy differences are left to do work. It began with Kelvin’s 1852 dissipation paper. Modern cosmology refines it:...
Why Do Muons Reach the Ground? Time Dilation, M...
A muon at rest lives about 2.2 microseconds, enough to travel only a few hundred metres even at nearly light speed. Yet muons made high in the atmosphere are counted...
Why Do Muons Reach the Ground? Time Dilation, M...
A muon at rest lives about 2.2 microseconds, enough to travel only a few hundred metres even at nearly light speed. Yet muons made high in the atmosphere are counted...