Ciro Santilli @cirosantilli 35

Ben Goertzel's fog computing project to try and help achieve AGI.

The fee/change address of cryptograffiti.info.

Subsidiary of Carl Zeiss AG and also part owned by ASML, sole optics vendor of ASML as of 2020.

Main article: DNS Census 2013.

This data source was very valuable, and led to many hits, and to finding the first non Reuters ranges with Section "secure subdomain search on 2013 DNS Census".

Hit overlap:Domain hit count when we were at 279 hits: 142 hits, so about half of the hits were present.

The timing of the database is perfect for this project, it is as if the CIA had planted it themselves!

whoisxmlapi WHOIS record on April 28, 2011

.com and .net are very dominant. Here we list other choices made:

Intel is known to have created customized chips for very large clients.

This is mentioned e.g. at: www.theregister.com/2021/03/23/google_to_build_server_socs/Those chips are then used only in large scale server deployments of those very large clients. Google is one of them most likely, given their penchant for Google custom hardware.

TODO better sources.

Gaussian path integrals.

They can't even make this basic stuff just work!

This notation is so confusing! People often don't manage to explain the intuition behind it, why this is an useful notation. When you see Indian university entry exam level memorization classes about this, it makes you want to cry.

The key reason why term symbols matter are Hund's rules, which allow us to predict with some accuracy which electron configurations of those states has more energy than the other.

web.chem.ucsb.edu/~devries/chem218/Term%20symbols.pdf puts it well: electron configuration notation is not specific enough, as each such notation e.g. 1s2 2s2 2p2 contains several options of spins and z angular momentum. And those affect energy.

This is why those symbols are often used when talking about energy differences: they specify more precisely which levels you are talking about.

Basically, each term symbol appears to represent a group of possible electron configurations with a given quantum angular momentum.

We first fix the energy level by saying at which orbital each electron can be (hyperfine structure is ignored). It doesn't even have to be the ground state: we can make some electrons excited at will.

The best thing to learn this is likely to draw out all the possible configurations explicitly, and then understand what is the term symbol for each possible configuration, see e.g. term symbols for carbon ground state.

It also confusing how uppercase letters S, P and D are used, when they do not refer to orbitals s, p and d, but rather to states which have the same angular momentum as individual electrons in those states.

It is also very confusing how extremelly close it looks to spectroscopic notation!

The form of the term symbol is:

The $2S+1$ can be understood directly as the degeneracy, how many configurations we have in that state.

Bibliography: