Manhattan Project Updated 2025-07-16
Man shall not live by bread alone Updated 2025-07-16
Ciro Santilli's mother loves that one. Even though she was constantly worried that if Ciro had studied physics he would be poor and starve, a factor which led him to study engineering instead, one of the greatest mistakes of his life. don't be a pussy.
Marie Curie Updated 2025-07-16
Like all big names in science, she was at the right place at the right time and with the right interest and passion.
Notably, the man she married, Pierre Curie, happened to be a the world master at precisely the technique that she needed to carefully measure radioactivity: he had the most precise electrometers in the world, which allowed to detect small amounts of radioactivity via the ionization of air by radiation . These used piezoelectricity, which Pierre Curie co-discovered with his brother.
Marsupial Updated 2025-07-16
CIA 2010 covert communication websites Methodology Updated 2025-07-16
CIA 2010 covert communication websites Non .com .net TLDs Updated 2025-07-16
.com and .net are very dominant. Here we list other choices made:
.info: has a few hits:Did a full Wayback Machine CDX scanning on .info after:That makes about 10k domains, so it's about the right size.grep -e news -e noticias -e nouvelles -e world -e global.org: has a least one hit, see: Are there .org hits?.biz:- unarchived comms:
- atthemovies.biz
- unarchived comms:
CIA 2010 covert communication websites noticiasmusica.net Updated 2025-07-16
whoisxmlapi WHOIS record on September 13, 2011
- Registrar Name: NETWORK SOLUTIONS, LLC
- Created Date: February 17, 2010 00:00:00 UTC
- Updated Date: February 17, 2010 00:00:00 UTC
- Expires Date: February 17, 2015 00:00:00 UTC
- Registrant Name: See, Megan|ATTN NOTICIASMUSICA.NET|care of Network Solutions
- Registrant Street: PO Box 459
- Registrant City: PA
- Registrant State/Province: US
- Registrant Postal Code: 18222
- Registrant Country: UNITED STATES
- Administrative Contact
- Administrative Name: See, Megan|ATTN NOTICIASMUSICA.NET|care of Network Solutions
- Administrative Street: PO Box 459
- Administrative City: Drums
- Administrative State/Province: PA
- Administrative Postal Code: 18222
- Administrative Country: UNITED STATES
- Administrative Email: hf3eg77c4nn@networksolutionsprivateregistration.com
- Administrative Phone: 5707088780
- Name Servers: NS45.WORLDNIC.COM|NS46.WORLDNIC.COM
2012:
- Registrant Country: PANAMA
Marxen-Buntrock machine Updated 2025-07-16
Best busy beaver machine known since 1989 as of 2023, before a full proof of all 5 state machines had been carried out.
Paper extracted to HTML by Heiner Marxen: turbotm.de/~heiner/BB/mabu90.html
Mass-energy equivalence Updated 2025-07-16
Raspberry Pi Pico Updated 2025-07-27
Some key specs:
- SoC:
- name: RP2040. Custom designed by Raspberry Pi Foundation, likely the first they make themselves rather than using a Broadcom chip. But the design still is closed source, likely wouldn't be easy to open source due to the usage of closed proprietary IP like the ARM
- dual core ARM Cortex-M0+
- frequency: 2 kHz to 133 MHz, 125 MHz by default
- memory: 264KB on-chip SRAM
- GPIO voltage: 3.3V
Raspberry Pi Pico W MicroPython example Updated 2025-07-27
An upstream repo at: github.com/raspberrypi/pico-micropython-examples
Some generic Micropython examples most of which work on this board can be found at: Section "MicroPython example".
The examples can be run as described at Program Raspberry Pi Pico W with MicroPython.
- rpi-pico-w/upython/led_on.py: turn on-board LED on and leave it on forever. Useful to quickly check that you are still able to update the firmware.
- rpi-pico-w/upython/led_off.py: turn on-board LED off and leave it off forever
- rpi-pico-w/upython/pwm.py: pulse width modulation. Using the same circuit as the rpi-pico-w/upython/blink_gpio.py, you will now see the external LED go from dark to bright continuously and then back
Raspberry Pi Pico W UART Updated 2025-07-16
You can connect form an Ubuntu 22.04 host as:When in but be aware of: Raspberry Pi Pico W freezes a few seconds after after screen disconnects from UART.
screen /dev/ttyACM0 115200screen, you can Ctrl + C to kill main.py, and then execution stops and you are left in a Python shell. From there:- Ctrl + D: reboots
- Ctrl + A K: kills the GNU screen window. Execution continues normally
Other options:
- ampy
runcommand, which solves How to run a MicroPython script from a file on the Raspberry Pi Pico W from the command line?
Mastodon (software) Updated 2025-07-16
Of course those racist Nazis are a bunch of idiots, but how can you be surprised when freedom-of-speech focused tech gets used by them? www.theverge.com/2019/7/12/20691957/mastodon-decentralized-social-network-gab-migration-fediverse-app-blocking
Obviously, a few large instances dominate the user base for all practical purposes: kevq.uk/centralisation-and-mastodon/. And likely the network splits into hate-speech/non-hate-speech blacklist boundaries. And since the dominating closed networks will never lose user counts (???), the only instance that dominates will be the main hate speech one.
The flagship instance was mastodon.social and then in 2020 they closed signups for it and created a secondary mastodon.online.
The multi-instance thing is confusing and problematic. E.g. replies and likes might not show up across instances in some occasions: www.reddit.com/r/Mastodon/comments/ynt7ta/is_there_a_way_to_see_post_replies_displayed_on/
The "advanced interface" feature is bad. Really bad. MacOS file browser inspired.
Mathematical analysis Updated 2025-07-16
Mathematical formulation of quantum field theory Updated 2025-07-16
The Dirac equation, OK, is a partial differential equation, so we can easily understand its definition with basic calculus. We may not be able to solve it efficiently, but at least we understand it.
But what the heck is the mathematical model for a quantum field theory? TODO someone was saying it is equivalent to an infinite set of PDEs somehow. Investigate. Related:
The path integral formulation might actually be the most understandable formulation, as shown at Richard Feynman Quantum Electrodynamics Lecture at University of Auckland (1979).
Quantum electrodynamics by Lifshitz et al. 2nd edition (1982) chapter 1. "The uncertainty principle in the relativistic case" contains an interesting idea:
The foregoing discussion suggests that the theory will not consider the time dependence of particle interaction processes. It will show that in these processes there are no characteristics precisely definable (even within the usual limitations of quantum mechanics); the description of such a process as occurring in the course of time is therefore just as unreal as the classical paths are in non-relativistic quantum mechanics. The only observable quantities are the properties (momenta,
polarizations) of free particles: the initial particles which come into interaction, and the final particles which result from the process.
Mathematician Updated 2025-07-16
Poet, scientists and warriors all in one? Conquerors of the useless.
A wise teacher from University of São Paulo once told the class Ciro Santilli attended an anecdote about his life:It turned out that, about 10 years later, Ciro ended up following this advice, unwittingly.
I used to want to learn Mathematics.But it was very hard.So in the end, I became an engineer, and found an engineering solution to the problem, and married a Mathematician instead.
Mathematics Updated 2025-07-16
The proper precise definition of mathematics can be found at: Section "Formalization of mathematics".
The most beautiful things in mathematics are described at: Section "The beauty of mathematics".
Study Hilbert spaces desert dilemma meme
. Source. Applies to almost all of mathematics of course. But we don't care, do we! Ciro Santilli's e-soulmates Updated 2025-07-16
These are people which Ciro never met personally, and who might not know that Ciro exists, or might never had any direct 1-2-1 online contact with Ciro, but Ciro is convinced are his brothers in some other dimension due to how many opinions or behaviours he feels they share:
- Dan Dascalescu due to articles such as:
- English as a universal language by Dan Dascalescu (2008)
- www.reddit.com/r/TheoryOfReddit/comments/9oujwf/why_archiving_old_threads_is_a_bigger_problem/ see also online forums that lock threads after some time are evil
- web.archive.org/web/20130922192354/http://wiki.dandascalescu.com/reviews/online_services/web_page_archiving see also web archiving
- random posts on OpenStreetMap, and about China: help.openstreetmap.org/questions/29300/legality-status-of-mapping-activity-in-china?page=1&focusedAnswerId=42167#42167
- kenorb see also Ciro Santilli's Stack Overflow contributions
- Gwern Branwen
Ciro sometimes ponders why is it so hard to find people online that you truly love and admire. Maybe it is for similar reasons why it is also hard in the real world: the great variety of human interest, and the great limitation of our attention spans. But online, where we have access to "everyone", shouldn't it should be easier? Not naturally finding such people is perhaps one of the greatest failings of our education system.
Ciro Santilli's fetishes Updated 2025-07-16
There are unlisted articles, also show them or only show them.