Ciro Santilli @cirosantilli 37

This was the first generation of commercially successful radios.

It uses a crystal detector as its diode, which is a crucial element of the radio, thus its name.

They were superseded by transistor radios, which were much more reliable, portable and could amplify the signal received.

Grepping the 2013 DNS Census first by overused CGI comms subdomains secure. and ssl. leaves 200k lines. Grepping for the overused "news" led to hits:

Also tried but failed:

OK, after the initial successes in secure., we went a bit more data intensive:New results: only one...

After 2013 DNS Census virtual host cleanup heuristic keyword searches we later understood why there were so few hits here: the 2013 DNS Census didn't capture the secure. subdomains of many domains it had for some reason. Shame, because if it had, this method would have yielded many more results.

Vs: image: the codomain is the set that the function might reach.

The image is the exact set that it actually reaches.

E.g. the function:could have:

Note that the definition of the codomain is somewhat arbitrary, e.g. $x^2$ could as well technically have codomain:even though it will obviously never reach any value in ${\mathbb{R}}^2$.

The exact image is in general therefore harder to characterize.

It takes time for the quantum state to evolve. So in order to have a deep quantum circuit, we need longer coherence times.

Pieter Zeeman for the Zeeman effect.

Atomic theory.

Discovery of:

Gas chromatography.

This was so hot (no pun intended) and reproducible that the prize was awarded one year after discovery. Quite rare in those days already.

For Fractional quantum Hall effect for $\nu =1/m$.