Where most of <Ciro Santilli>'s ancestors came from, and why Ciro has the <Italian> nationality as well as <Brazilian>.

More specifically his paternal line comes from https://en.wikipedia.org/wiki/Gissi[Gissi in the Abruzzo region].

Ciro feels really bad by the fact that he does not speak Italian and has never visited Gissi as of 2020.

He would likely be able to learn Italian in like 3 months because it is so similar to <Ciro Santilli's natural languages skills>[Portuguese and French which he already speaks].

And a <Ciro Santilli's sport practice>[cycling visit maybe]? That would be amazing! https://en.wikipedia.org/wiki/Giro_d'Abruzzo[] | https://www.youtube.com/watch?v=OW7wqa3vNU8&list=UU35qUU5iZPvuzcre43EV8bA&index=25[]

For what it is worth though, <Ciro Santilli> does honestly love <Europe>, and feels a strong desire to make it even awesomer, along with the rest of the world. Despite this being a hopeless attempt due to <having more than one natural language is bad for the world>.


Ciro Santilli's ancestors

{c}

http://www.orangepi.org/orangepipc/

Board LED does not turn on (turned on on first plug, <Ethernet> always turns on):

* http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=470
* https://www.youtube.com/watch?v=ZtUn-dnJFdU says only one specific supply worked..
* https://www.reddit.com/r/raspberry_pi/comments/3jamn1/any_orange_pi_owners_here_help_with_power_imput/ Comment https://www.reddit.com/r/raspberry_pi/comments/3jamn1/any_orange_pi_owners_here_help_with_power_imput/cy79a7w says it only worked with the official supply...

Now just HDMI does not work. Possibly a monitor vs television problem:

* http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=475


Orange Pi PC

{c}
{wiki}

\Image[https://upload.wikimedia.org/wikipedia/commons/8/82/Dean_Kamen_visits_Team_Whiteman_160426-F-TQ704-039_%28cropped%29.jpg]
{source=https://en.wikipedia.org/wiki/File:Dean_Kamen_visits_Team_Whiteman_160426-F-TQ704-039_(cropped).jpg}


Dean Kamen

{wiki}

\Video[https://www.youtube.com/watch?v=iYYRH4apXDo]
{title=Space Oddity by David Bowie (1969)}

\Video[https://www.youtube.com/watch?v=QkF3oxziUI4]
{title=Stairway to Heaven by Led Zeppelin (1971)}


Rock music

{c}

The website system that runs <OurBigBook.com>. For further information see:
* <OurBigBook.com>: rationale
* https://cirosantilli.com/ourbigbook/ourbigbook-web[]: project documentation
Relies on the <OurBigBook Library> to compile <OurBigBook Markup>.


OurBigBook Web

{wiki}

Currently an informal name for the <Standard Model>

Chronological outline of the key theories:
* <Maxwell's equations>
* <Schrödinger equation>
  * Date: 1926
  * Numerical predictions:
    * <hydrogen spectral line>, excluding finer structure such as 2p up and down split: https://en.wikipedia.org/wiki/Fine-structure_constant
* <Dirac equation>
  * Date: 1928
  * Numerical predictions:
    * <hydrogen spectral line> including 2p split, but excluding even finer structure such as <Lamb shift>
  * Qualitative predictions:
    * Antimatter
    * Spin as part of the equation
* <quantum electrodynamics>
  * Date: 1947 onwards
  * Numerical predictions:
    * <Lamb shift>
  * Qualitative predictions:
    * Antimatter
    * <spin (physics)> as part of the equation


Particle physics

{disambiguate=physics}
{wiki}

<Quantum Field Theory lecture notes by David Tong (2007)> puts it well:
\Q[In classical physics, the primary reason for introducing the concept of the <field (physics)> is to construct laws of Nature that are local. The old laws of Coulomb and Newton involve "action at a distance". This means that the force felt by an electron (or planet) changes immediately if a distant <proton> (or star) moves. This situation is philosophically unsatisfactory. More importantly, it is also experimentally wrong. The field theories of Maxwell and Einstein remedy the situation, with all interactions mediated in a local fashion by the field.]
This is also mentioned e.g. at <video The Quantum Experiment that ALMOST broke Locality by The Science Asylum (2019)>.


Field

{tag=Computer simulation}
{wiki}

The intersection of two beautiful <arts>: <computer>[coding] and <physics>!

Computational physics is a good way to get valuable intuition about the key equations of physics, and train your <numerical analysis> skills:
* classical mechanics
  * "Real-time <heat equation> OpenGL visualization with interactive mouse cursor using relaxation method" under <articles>
* https://phet.colorado.edu PhET simulations from University of Colorado Boulder

Other child sections:
* <Schrödinger equation simulations>
* <quantum field theory simulations>


Computational physics

While <Ciro Santilli> is a big fan of having "one global country" (<having more than one natural language is bad for the world>[and language]), which is somewhat approximated by globalization, he has come to believe that there is one serious downside to globalization as it stands in 2020: it allows companies to pressure <governments> to reduce <taxes>, and thus <governments have lost all power to companies>[reduces the power of government], which in turn increases <social inequality>. This idea is very well highlighted in <Can't get you out of my head by Adam Curtis (2021)>.

The only solution seems to be for governments to get together, and make deals to have fair taxation across each other. Which might never happen.


Globalization reduces the power of governments

{c}
{wiki}

Head of the theoretical division at the <Los Alamos Laboratory> during the <Manhattan Project>.

<Richard Feynman> was working under him there, and was promoted to team lead by him because Richard impressed Hans.

He was also the person under which <Freeman Dyson> was originally under when he moved from the <United Kingdom> to the <United States>.

And Hans also impressed Feynman, both were problem solvers, and liked solving mental arithmetic and <numerical analysis>.

This relationship is what brought Feynman to <Cornell University> after <World War II>, Hans' institution, which is where Feynman did the main part of his <1965 Nobel Prize in Physics laureate>[Nobel prize winning] work on <quantum electrodynamics>.

Hans must have been the perfect <PhD> advisor. He's always smiling, and he seemed so approachable. And he was incredibly capable, notably in his calculation skills, which were much more important in those pre-<computer> days.


Hans Bethe

{wiki}

Sequence alignment is trying to match a <DNA> or <amino acid> sequence, even though the sequences might not be exactly the same, otherwise it would be a straight up <string-search algorithm>.

This is fundamental in <bioinformatics> for two reasons:
* when you <sequence the DNA> of a new <species>, you can guess what each <protein> does by comparing it with similar proteins in other species that you have already studied
* when doing <DNA sequencing>, and specially <short-read DNA sequencing>, you generally need to align the reads to reference genomes to know where you are inside the entire genome, and then be able to spot <mutations>, notably <single-nucleotide polymorphisms>


Sequence alignment

{c}
{wiki}

https://www.youtube.com/playlist?list=PLVV0r6CmEsFw1phnddYWXtVkRW8eUVlqx Edward Teller interview by <Web of Stories> (1996) Date shown at: https://www.webofstories.com/play/edward.teller/1[]. Listener: John H. Nuckolls

\Video[https://www.youtube.com/watch?v=KMNQBILLYOw]
{title=Witnessing the test explosion <Edward Teller> interview by <Web of Stories> (1996)}

\Video[https://www.youtube.com/watch?v=Goim-4MF_uE]
{title=<Edward Teller>, An Early Time}
{description=
Comissioned by the <Los Alamos National Laboratory> in 1979. Producer: Mario Balibreraa.
* https://youtu.be/Goim-4MF_uE?t=338[]; holy fuck he almost cut his foot off on a stupid tram accident!
* https://youtu.be/Goim-4MF_uE?t=457[]: he plays the piano
* https://youtu.be/Goim-4MF_uE?t=965[]: he drove <Szilard> to propose to <Einstein> the <Einstein-Szilard letter>
}


Edward Teller

{c}
{wiki}

= Hawking
{c}
{synonym}

While learning black-hole stuff is not on top of <Ciro Santilli>'s priorities, Hawking's spirit is to be admired.

To never give up even when everything seems lost, and still have a sense of humour is respectable.

An ex-physicist colleague who had met Hawking told an anecdote. Hawking was around in the department one day, they said hi and all. But then Hawking wanted to tell a joke. It took like 5 minutes of typing, and you can imagine that things were pretty awkward and the joke's timing was "a bit off". But Hawking did tell the joke nonetheless.

This is also suggested in the https://en.wikipedia.org/wiki/The_Theory_of_Everything_(2014_film)[The Theory of Everything (2014)] film, and therefore likely the biographies.


Stephen Hawking

{c}
{title2=1947}
{wiki}

Sponsored by <National Academy of Sciences>, located in <Long Island>.

Some photos at: http://www.nasonline.org/about-nas/history/archives/milestones-in-NAS-history/shelter-island-conference-photos.html on the website of <National Academy of Sciences>, therefore canon. 

This is where <Isidor Rabi> exposed experiments carried out on the <anomalous magnetic dipole moment> and <Willis Lamb> presented his work on the <Lamb shift>.

It was a very private and intimate conference, that gathered the best physicists of the area, one is reminded of the style of the <Solvay Conference>.

<QED and the men who made it: Dyson, Feynman, Schwinger, and Tomonaga by Silvan Schweber (1994)> chapter 4.1 this conference was soon compared to the <First Solvay Conference (1911)>, which set in motion the development of <non-relativistic quantum mechanics>.


Shelter Island Conference

{wiki}

The fundamental intuition about capacitors is that they never let <electrons> through.

They can only absorb <electrons> up to a certain point, but then the pushback becomes too strong, and current stops.

Therefore, they cannot conduct <direct current> long term.

For <alternating current> however, things are different, because in alternating current, <electrons> are just jiggling back and forward a little bit around a center point. So you can send alternating current power across a capacitor.

The key equation that relates <Voltage> to <electric current> in the <capacitor> is:
$$
I(t) = C \dv{V(t)}{t}
$$
So if a voltage <Heavyside step function> is applied what happens is:
* the capacitor fills up instantly with an infinite current
* the current then stops instantly
More realistically, one may consider the behaviour or the <series RC circuit> to see what happens without infinities when a capacitor is involved as in the <step response of the series RC circuit>.

\Image[https://upload.wikimedia.org/wikipedia/commons/7/73/IEEE_315_Fundamental_Items_Symbols_%2832%29.svg]

\Video[https://www.youtube.com/watch?v=4PkcOeZCE0g]
{title=Finding Capacitance with an Oscilloscope by Jacob Watts (2020)}
{description=Good experiment.}


Capacitor

{wiki}

= Oscillator
{synonym}

Something where <DC voltage> comes in, and a periodic voltage comes out.

\Video[https://www.youtube.com/watch?v=eYVOdlK15Og]
{title=Oscillators: <RC oscillator>[RC], <LC oscillator>[LC], <crystal oscillator>[Crystal] by GreatScott! (2015)}
{description=
Good video. Contains actual <breadboard> experiments on <oscilloscope> and circuit diagrams
* https://youtu.be/eYVOdlK15Og?t=66 <RC oscillator> on <breadboard>. Produces <rectangular wave>. Mentions popular <integrated circuit> that does it: <555 timer IC>.
* https://youtu.be/eYVOdlK15Og?t=175 <LC oscillators> allows for higher frequencies. Produces <sinusoidal> output on <MHz> range. Uses an amplifier to feed back into input and maintain same voltage. Hard to make reliably on breadboard.
* https://youtu.be/eYVOdlK15Og?t=315 <crystal oscillator>. Mentions it acts like an <LC oscillators>. Shows and equivalent model. Wish he had talked more about them. You need support components around it: similarly to the LC case, the amplifier is generally not packaged in.
}


Electronic oscillator

= Formal proff is useless
{synonym}

The only cases where formal proof of <theorems> seem to have had actual mathematical value is for theorems that require checking a very large number of case, so much so that no human can be fully certain that no mistakes were made. Some examples:
* https://en.wikipedia.org/wiki/Four_color_theorem[Four color theorem]
* <BB(5)>
* <classification of finite simple groups>


Formal proof is useless

{c}
{wiki}

Continuous version of the <Fourier series>.

Can be used to represent functions that are not periodic: https://math.stackexchange.com/questions/221137/what-is-the-difference-between-fourier-series-and-fourier-transformation while the <Fourier series> is only for periodic functions.

Of course, every function defined on a finite line segment (i.e. a <compact space>).

Therefore, the <Fourier transform> can be seen as a generalization of the <Fourier series> that can also decompose functions defined on the entire <real line>.

As a more concrete example, just like the <Fourier series> is how you solve the <heat equation> on a line segment with <Dirichlet boundary conditions> as shown at: <solving partial differential equations with the Fourier series>{full}, the <Fourier transform> is what you need to solve the problem when the <domain (function)> is the entire <real line>.


Fourier transform

Group axiom

{c}
{wiki}

Quora is crap in many, many senses, but in part due to some <bad Stack Overflow policies>, it is the best crap we've got for certain (mostly useless) subjects. Until <OurBigBook.com> dominates the world.

The worst thing about quora is that you cannot subscribe only to certain subjects on your feed. Quora just keeps pumping <shit> you never subscribed to, no matter what. Ciro, for sport, unfollowed every single idiotic subject it was proposing, but it didn't work, sooner or later Quora just keeps pumping more shit back. Mind you, some of that shit is fun. But it's still shit. Though on second thought, <YouTube> also randomly decides to reset Ciro's humongous "don't recomend this shitty channel" choices from time to time, which is not much different...

Other terrible things, they just seem to have an incredible ability of making the website worse and more annoying over time! Truly amazing:
* around 2022, quora started showing "related" answers to other questions, possibly before actualy answers to the question itself. This, together with an insane number of inline ads that look very similar to answers, makes it very hard to decide what is an actual answer or not!!! E.g.: people complaining: 
  * https://www.reddit.com/r/OutOfTheLoop/comments/uqyvfp/whats_the_deal_with_quora_answers_seemingly/
  * https://greatqinformation.quora.com/How-to-stop-Quora-showing-me-related-answers-which-really-arent-related-at-all 

  This "feature" is so bad that it is even comical. Quora looks more like a spambot than a Q&A site now. Unusable!
* around 2021, quora started expanding any link as a huge preview box that completely takes over the answer, and it is very hard to stop it from doing so
* Quora used to show question details beyond the title by default, but stopped: https://www.reddit.com/r/OutOfTheLoop/comments/uqyvfp/comment/jd6go1b/?utm_source=share&utm_medium=web2x&context=3

Quora is getting so bad that it is basically being killed by <Reddit>, especially after they lifted the 6-month hard thread lock...
* https://www.reddit.com/r/quora/comments/piiyzh/quora_is_just_intent_on_killing_itself_isnt_it/
* https://www.reddit.com/r/quora/comments/176yesi/is_quora_dead/

See also: https://cirosantilli.com/china-dictatorship/quora for a coverage of the intense pro-CCP astroturfing present on the website.


Title	Created	Updated
Ciro Santilli's ancestors	1970-01-01	1970-01-01
Orange Pi PC	1970-01-01	1970-01-01
Dean Kamen	1970-01-01	1970-01-01
Rock music	1970-01-01	1970-01-01
OurBigBook Web	1970-01-01	1970-01-01
Particle physics	1970-01-01	1970-01-01
Field	1970-01-01	1970-01-01
Computational physics	1970-01-01	1970-01-01
Globalization reduces the power of governments	1970-01-01	1970-01-01
Hans Bethe	1970-01-01	1970-01-01
Sequence alignment	1970-01-01	1970-01-01
Edward Teller	1970-01-01	1970-01-01
Stephen Hawking	1970-01-01	1970-01-01
Shelter Island Conference	1970-01-01	1970-01-01
Capacitor	1970-01-01	1970-01-01
Electronic oscillator	1970-01-01	1970-01-01
Formal proof is useless	1970-01-01	1970-01-01
Fourier transform	1970-01-01	1970-01-01
Group axiom	1970-01-01	1970-01-01
Quora	1970-01-01	1970-01-01

Ciro Santilli (@cirosantilli, 32)