Ciro Santilli @cirosantilli 37

Related to what does it mean that photons are force carriers for electromagnetism?.

As if it weren't enough, there's also a Cyrillic script psi that is slightly different. Life's great.

More interestingly, how is that implied by the Stern-Gerlach experiment?

physics.stackexchange.com/questions/266359/when-we-say-electron-spin-is-1-2-what-exactly-does-it-mean-1-2-of-what/266371#266371 suggests that half could either mean:

In 2020 physics, best explained by general relativity.

TODO: does old Newtonian gravity give different force results than general relativity?

Lower case looks like the mouth shape when you say Z, with mouth open, and you can even see the little tongue going down. Beauty.

The Google Story Chapter 21. A Virtual Library mentions that Paul Allen was interested in trying to create something like the "Final Encyclopedia" from this book. This is somewhat the same motivation for Google Books and Google's activities more broadly, as shown in their organise the world's information mission statement.