Leanpub Updated 2025-07-16
Founder: Peter Armstrong
ruboss.com/ documents their stack, a somewhat similar choice to OurBigBook.com as of 2021, notably Next.js. But backend in Ruby on Rails. They actually managed Apollo/GraphQL, which Ciro Santilli would have liked, but din't have the patience for.
The founder/CEO Peter Armstrong www.linkedin.com/in/peterburtonarmstrong/ He looks like a nice guy.
Learn in public Updated 2025-07-16
This is the most extreme and final form of peer tutoring, it's natural final consequence given the Internet Age.
Lebesgue integral of is complete but Riemann isn't Updated 2025-07-16
is:
- complete under the Lebesgue integral, this result is may be called the Riesz-Fischer theorem
- not complete under the Riemann integral: math.stackexchange.com/questions/397369/space-of-riemann-integrable-functions-not-complete
And then this is why quantum mechanics basically lives in : not being complete makes no sense physically, it would mean that you can get closer and closer to states that don't exist!
Bloons Tower Defense 5 Updated 2025-07-16
One of Ciro Santilli's favorites.
Blue (university sport) Updated 2025-07-16
Bohr-Sommerfeld model Updated 2025-07-16
Refinement of the Bohr model that starts to take quantum angular momentum into account in order to explain missing lines that would have been otherwise observed TODO specific example of such line.
They are not observe because they would violate the conservation of angular momentum.
Introduces the azimuthal quantum number and magnetic quantum number.
Browser MMORPG Updated 2025-07-16
Browse S3 bucket on web browser Updated 2025-07-16
They can't even make this basic stuff just work!
Lawrence Livermore National Laboratory Updated 2025-07-16
Founded partly due to the influence of Edward Teller who thought Los Alamos National Laboratory was not making good progress on thermonuclear weapons, large part of which was developed there.
Chicago Updated 2025-07-16
Compulsive hoarding Updated 2025-07-16
How the telephone works Updated 2025-07-16
- www.quora.com/How-is-a-voice-transmitted-from-one-phone-to-another
- www.quora.com/How-many-wires-does-a-telephone-use/answer/Peter-Yardley-1
Basic analogue phones connected to the public exchange use two wires mainly arranged as a twisted pair to reduce noise. The voice signal is differential (the voltage in one wire equal and opposite to the other) biased above ground by 48V. Using a twisted pair reduces induced noise because the noise signal will induce an equal voltage in each wire and because the signal is transmitted as the difference the effect of the induced noise will be dramatically reduced.
Phone Intercom by Make (2014)
Source. This video illustrates will the incredible simplicity of the connection of a telephone system. Compare that to the relative complexity of wireless communication, which requires modulation. Mathematics YouTube channel Updated 2025-07-16
Musical instrument Updated 2025-07-16
Music education Updated 2025-07-16
Sound synthesis Updated 2025-07-16
Technique to make cool sound instruments mathematically, either with electronic hardware components, or with a software synthesizer.
Good tutorials:
Best known techniques:
Stamp collecting Updated 2025-07-16
Title track Updated 2025-07-16
Board game Updated 2025-07-16
Cauchy's functional equation Updated 2025-07-16
Nice result on Lebesgue measurable required for uniqueness.
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