Quantum, Relativity & Forces Explained | Pixelated Physics
19 articles
What Is the Photon Sphere, and What Did the Eve...
Near a black hole there is a radius where gravity bends light into a circle: the photon sphere, at r = 3GM/c² for a non-spinning hole. It is unstable, so...
What Is the Photon Sphere, and What Did the Eve...
Near a black hole there is a radius where gravity bends light into a circle: the photon sphere, at r = 3GM/c² for a non-spinning hole. It is unstable, so...
What Are Lagrange Points, and Why Does JWST Sit...
Lagrange points are five spots where a small object can keep pace with two big ones, like a spacecraft riding along with the Sun and Earth. We work out where...
What Are Lagrange Points, and Why Does JWST Sit...
Lagrange points are five spots where a small object can keep pace with two big ones, like a spacecraft riding along with the Sun and Earth. We work out where...
Jocelyn Bell Burnell and the Discovery of Pulsars
In late 1967 Jocelyn Bell, a PhD student at Cambridge, noticed a strange signal among miles of chart paper. It turned out to be a pulsar, a spinning neutron star....
Jocelyn Bell Burnell and the Discovery of Pulsars
In late 1967 Jocelyn Bell, a PhD student at Cambridge, noticed a strange signal among miles of chart paper. It turned out to be a pulsar, a spinning neutron star....
The Cosmological Lithium Problem: Big Bang’s Mi...
The Big Bang’s first minutes forged hydrogen, helium and a trace of lithium, and the theory matches deuterium and helium beautifully. Lithium-7 is the odd one out: the oldest stars...
The Cosmological Lithium Problem: Big Bang’s Mi...
The Big Bang’s first minutes forged hydrogen, helium and a trace of lithium, and the theory matches deuterium and helium beautifully. Lithium-7 is the odd one out: the oldest stars...
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:...