Intermediate filaments by Ciro Santilli 35 Updated +Created
Why is COVID-19 more serious than the flu? by Ciro Santilli 35 Updated +Created
Illegal content of block 229k by Ciro Santilli 35 Updated +Created
These can be viewed at bitcoinstrings.com/blk00052.txt and are mostly commented on the "Wikileaks cablegate data" section of Hidden surprises in the Bitcoin blockchain by Ken Shirriff (2014).
Soon after block 229991 uploaded the Satoshi uploader, several interesting files were added to the blockchain using the uploader, and notably some containing content that might be illegal in certain countries, as a test to see if this type of content would make the Bitcoin blockchain illegal or not:
So basically, this was the first obviously illegal block attempt.
None of this content is particularly eye-popping for Ciro Santilli's slightly crazy freedom of speech standards, and as of 2021, the Bitcoin blockchain likely hasn't become illegal anywhere yet due to freedom of speech concerns.
Furthermore, it is likely much easier to find much worse illegal content by browsing any uncensored Onion service search engine for 2 minutes.
Ciro Santilli estimates that perhaps the uploader didn't upload child pornography, which is basically the apex of illegality of this era, because they were afraid that their identities would one day be found.
Bibliography:
Interesting input script data by Ciro Santilli 35 Updated +Created
Bibliography by Ciro Santilli 35 Updated +Created
Other Bitcon analysis:
Analyses in other blockchains:
GlobalFoundries by Ciro Santilli 35 Updated +Created
AMD just gave up this risky part of the business amidst the fabless boom. Sound like a wise move. They then fell more and more away from the state of the art, and moved into more niche areas.
TSMC by Ciro Santilli 35 Updated +Created
One of the companies that has fabs, which buys machines from companies such as ASML and puts them together in so called "silicon fabs" to make the chips
As the quintessential fabless fab, there is on thing TSMC can never ever do: sell their own design! It must forever remain a fab-only company, that will never compete with its customers. This is highlighted e.g. at youtu.be/TRZqE6H-dww?t=936 from Video "How Nvidia Won Graphics Cards by Asianometry (2021)".
Video 1.
How Taiwan Created TSMC by Asianometry (2020)
Source. Some points:
  • UCM failed because it focused too much on the internal market, and was shielded from external competition, so it didn't become world leading
  • one of TSMC's great advances was the fabless business model approach.
  • they managed to do large technology transfers from the West to kickstart things off
  • one of their main victories was investing early in CMOS, before it became huge, and winning that market
Alibaba Cloud by Ciro Santilli 35 Updated +Created
Atomic clock by Ciro Santilli 35 Updated +Created
Video 1.
How an atomic clock works, and its use in the global positioning system (GPS) by EngineerGuy (2012)
Source. Shows how conceptually an atomic clock is based on a feedback loop of two hyperfine structure states of caesium atoms (non-radioactive caesium-133 as clarified by the Wikipedia page). Like a quartz clock, it also relies on the piezoelectricity of quartz, but unlike the quartz clock, the quartz is not shaped like a tuning fork, and has a much larger resonating frequency of about 7 MHz. The feedback is completed by producing photons that resonate at the right frequency to excite the caesium.
Video 2.
Inside the HP 5061A Cesium Clock by CuriousMarc (2020)
Source.
A similar model was used in the Hafele-Keating experiment to test special relativity on two planes flying in opposite directions. Miniaturization was key.
Contains a disposable tube with 6g of Caesium. You boil it, so when it runs out, you change the tube, 40k USD. Their tube is made by Agilent Technologies, so a replacement since that opened in 1999, and the original machine is from the 60s.
Detection is done with an electron multiplier.
youtu.be/eOti3kKWX-c?t=1166 They compare it with their 100 dollar GPS disciplined oscillator, since GPS satellites have atomic clocks in them.
Video 3.
Quick presentation of the atomic clock at the National Physical Laboratory (2010)
Source. Their super accurate setup first does laser cooling on the caesium atoms.
Sandy Lerner by Ciro Santilli 35 Updated +Created
This chick is hardcore.
CERN experiment by Ciro Santilli 35 Updated +Created
FreeBSD by Ciro Santilli 35 Updated +Created
Black-body radiation experiment by Ciro Santilli 35 Updated +Created
  • The Quantum Story by Jim Baggott (2011) page 10 mentions:
    Early examples of such cavities included rather expensive closed cylinders made from porcelain and platinum.
    and the footnote comments:
    The study of cavity radiation was not just about establishing theoretical principles, however. It was also of interest to the German Bureau of Standards as a reference for rating electric lamps.
  • 1859-60 Gustav Kirchhoff demonstrated that the ratio of emitted to absorbed energy depends only on the frequency of the radiation and the temperature inside the cavity
  • 1896 Wien approximation seems to explain existing curves well
  • 1900 expriments by Otto Lummer and Ernst Pringsheim show Wien approximation is bad for lower frequencies
  • 1900-10-07 Heinrich Rubens visits Planck in Planck's villa in the Berlin suburb of Grünewald and informs him about new experimental he and Ferdinand Kurlbaum obtained, still showing that Wien approximation is bad
  • 1900 Planck's law matches Lummer and Pringsheim's experiments well. Planck forced to make the "desperate" postulate that energy is exchanged in quantized lumps. Not clear that light itself is quantized however, he thinks it might be something to do with allowed vibration modes of the atoms of the cavity rather.
  • 1900 Rayleigh-Jeans law derived from classical first principles matches Planck's law for low frequencies, but diverges at higher frequencies.
Video 1.
Black-body Radiation Experiment by sciencesolution (2008)
Source. A modern version of the experiment with a PASCO scientific EX-9920 setup.
yEnc by Ciro Santilli 35 Updated +Created
Allen Wu by Ciro Santilli 35 Updated +Created
This situation is the most bizarre thing ever. The dude was fired in 2020, but he refused to be fired, and because he has the company seal, they can't fire him. He is still going to the office as of 2022. It makes one wonder what are the true political causes for this situation. A big warning sign to all companies tring to setup joint ventures in China!
Video 1.
ARM Fired ARM China’s CEO But He Won’t Go by Asianometry (2021)
Source.
Animal flight by Ciro Santilli 35 Updated +Created

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