Hacker News Reader

lateadopteron Bringing back the iPhone headphone jack, in China

The iPhone 7 comes with two DACs, there's one in the earphones too now.

lateadopteron Physicists Just Generated a Particle That Acts as Its Own Antiparticle

Yep, title is bad, better would be "Physicists Just Generated a Fermion That Acts as Its Own Antiparticle", or more concisely: "Physicists Just Generated a Majorana Fermion".

All bosons (e.g. photons) are their own antiparticle, so this is a rare instance of science writing where the headline is LESS interesting than the actual work done.

lateadopteron Why do many math books have so much detail and so little enlightenment? (2010)

> Like, I haven't found much details about the actual physical experiments around the spin of electrons (and certainly not of other particles).

The Stern-Gerlach experiment (1922) is what you're looking for. "Modern Quantum Mechanics" by Sakurai opens with an explanation of this experiment and its consequences.