Physics, Pixelated
What Is the Cosmic Microwave Background? The Ol...
Every direction you look, the sky glows faintly in microwaves at 2.725 kelvin. That glow is light released about 380,000 years after the Big Bang. Here is how it formed,...
What Is the Cosmic Microwave Background? The Ol...
Every direction you look, the sky glows faintly in microwaves at 2.725 kelvin. That glow is light released about 380,000 years after the Big Bang. Here is how it formed,...
What Are Gluons, and Why Can’t We See a Single ...
Every proton holds three quarks, yet no experiment has ever pulled a single quark free. The reason is the strange behaviour of gluons, the carriers of the strong force. Here...
What Are Gluons, and Why Can’t We See a Single ...
Every proton holds three quarks, yet no experiment has ever pulled a single quark free. The reason is the strange behaviour of gluons, the carriers of the strong force. Here...
Can Temperature Be Negative? Negative Absolute ...
Physicists have made systems with negative absolute temperature since 1951. They are not colder than absolute zero; they are hotter than any positive temperature. Here is why, what was measured,...
Can Temperature Be Negative? Negative Absolute ...
Physicists have made systems with negative absolute temperature since 1951. They are not colder than absolute zero; they are hotter than any positive temperature. Here is why, what was measured,...
Why Does a Magnet Fall Slowly Through a Copper ...
Copper isn’t magnetic, yet a strong magnet dropped down a copper pipe falls in slow motion. The reason is Lenz’s law: the currents the moving magnet induces always push back...
Why Does a Magnet Fall Slowly Through a Copper ...
Copper isn’t magnetic, yet a strong magnet dropped down a copper pipe falls in slow motion. The reason is Lenz’s law: the currents the moving magnet induces always push back...
What Is the Black Hole Information Paradox? Whe...
If black holes evaporate into featureless heat, what happens to everything that fell in? Here is Hawking’s paradox, the Page curve that turned it into a calculation, the recent “island”...
What Is the Black Hole Information Paradox? Whe...
If black holes evaporate into featureless heat, what happens to everything that fell in? Here is Hawking’s paradox, the Page curve that turned it into a calculation, the recent “island”...
Why Do Electrons Have Spin ½? What Spin Is, and...
Electrons carry an intrinsic angular momentum of ½ in units of ħ. It splits beams of atoms in two, makes electrons need two full turns to come back to themselves,...
Why Do Electrons Have Spin ½? What Spin Is, and...
Electrons carry an intrinsic angular momentum of ½ in units of ħ. It splits beams of atoms in two, makes electrons need two full turns to come back to themselves,...