Physics, Pixelated
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...
What Is Decoherence, and Does It Solve the Meas...
Decoherence is what happens when a quantum system becomes entangled with its surroundings: interference between its alternatives becomes practically invisible. It explains why we never see a pointer in two...
What Is Decoherence, and Does It Solve the Meas...
Decoherence is what happens when a quantum system becomes entangled with its surroundings: interference between its alternatives becomes practically invisible. It explains why we never see a pointer in two...
Newton, Galileo and Kepler: What Each Got Right...
Kepler found that planets follow ellipses with the Sun at a focus. Galileo built the kinematics of free fall and projectile motion. Newton’s Principia united them under universal gravitation and...
Newton, Galileo and Kepler: What Each Got Right...
Kepler found that planets follow ellipses with the Sun at a focus. Galileo built the kinematics of free fall and projectile motion. Newton’s Principia united them under universal gravitation and...
Vera Rubin and Rotation Curves: What She Measur...
Vera Rubin and W. Kent Ford’s 1970 Andromeda survey mapped how orbital speed changes with radius. Outer stars move too fast for the visible mass alone. Whether that means dark...
Vera Rubin and Rotation Curves: What She Measur...
Vera Rubin and W. Kent Ford’s 1970 Andromeda survey mapped how orbital speed changes with radius. Outer stars move too fast for the visible mass alone. Whether that means dark...