Physics, Pixelated
Hideki Yukawa and the Meson: How a Force’s Rang...
In 1934 Hideki Yukawa asked why the force that holds the nucleus together reaches only about the width of a proton. His answer: a force carried by a particle with...
Hideki Yukawa and the Meson: How a Force’s Rang...
In 1934 Hideki Yukawa asked why the force that holds the nucleus together reaches only about the width of a proton. His answer: a force carried by a particle with...
The Ising Model Explained: How Tiny Arrows Expl...
The Ising model is the simplest picture of a magnet: a grid of arrows that can only point up or down, each wanting to match its neighbours. Heat scrambles them;...
The Ising Model Explained: How Tiny Arrows Expl...
The Ising model is the simplest picture of a magnet: a grid of arrows that can only point up or down, each wanting to match its neighbours. Heat scrambles them;...
The Airy Disk and the Diffraction Limit: Why Ev...
A perfect lens still cannot focus light to a point. Waves spread out after passing through any opening, so every star becomes a tiny bright disk with faint rings, the...
The Airy Disk and the Diffraction Limit: Why Ev...
A perfect lens still cannot focus light to a point. Waves spread out after passing through any opening, so every star becomes a tiny bright disk with faint rings, the...
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...
Where Does the Proton’s Mass Come From? (Hint: ...
A proton weighs 938 MeV/c², but its two up quarks and one down quark add up to only about 9 MeV/c², roughly 1%. The rest is energy: the motion of...
Where Does the Proton’s Mass Come From? (Hint: ...
A proton weighs 938 MeV/c², but its two up quarks and one down quark add up to only about 9 MeV/c², roughly 1%. The rest is energy: the motion of...