Notices by niconiconi (niconiconi@mk.absturztau.be)

Cirno's Perfect Real Analysis Class. (src: https://www.bilibili.com/video/BV13WtMeqE2h )

Sign out to confirm you’re a bot. This helps destroy our community.

Condensed-matter physics be like...
Q: Why does glass conduct heat with this particular value of thermal conductivity?
A: We are not sure. Try getting a PhD and a fast computer to answer that yourself, don't forget to publish it as everyone else is waiting for it.

Just got several of these toy calorimeters, meant to teach 7th graders about specific heat and Joule's law. My plan is replacing the heater coils with 50 Ω coax loads, adding motorized stirrers, instrumentation with PT1000 probes, and running two of them in a differential bridge configuration, actively balanced by opamps for RMS to DC conversion, upgrading them from 7th grade physics to college physics. #electronics

@return_0@sunbeam.city Modulation Transfer Function in Optical and Electro-Optical Systems

Fun fact: You can use a pulse generator to find the transfer function of camera lens just like how you do it for circuits. #electronics

Q: What is the formula of the ripple of a DC power supply derived from AC via a diode-capacitor rectifier?
A: Don't worry about it. Just pretend the diode is always off, so you're discharging a full capacitor in isolation as a standard RC circuit. Use small ripple approximation, and pretend the exponential discharge is linear too.
Q: Stop cheating, what is the exact solution for arbitrary loads?
A: Believe me, you don't want that anyway.

A Capture-the-Flag challenge for RISC-V code should be called Capture-the-Register.

Master Stole the Precious Padoru (src: https://www.bilibili.com/video/BV1XV411b7ZE)

/me is testing whether supposedly-C++11 conformant code really is on GCC 4.9 in a Ubuntu 14.04 VM. Back to the golden age! I still remember the excitement back then.

virtual memory exhausted: Cannot allocate memory
g++-4.8: internal compiler error: Killed (program cc1plus)Authentic C++11 experience.

Perhaps the most surprising fact about quantum mechanics is not that quantum states can be in superposition, but that this superposition is linear. So most the linear algebra tricks you've learned from circuits and signal processing are reusable here. Almost too good to be true. You'd think something "quantum" ought to be more "complex" than that.

"Disadvantages: Absence of detailed documentation (besides the Developer Guide generated from the source code comments)"More like a "feature" shared by a trillion projects.

Q: Why do oscilloscope measurements drift over time?

A: Plate Tektronix.

Q: How far are we from fusion power?
A: 1 AU.

Literally me, except I'm not a cute anime girl. (src: https://x.com/_RLSVD_/status/1702994642319368472) #animeirl

Q: Is it possible to master the entirety of C++?

A: Given its wide range of concepts, it's the view of many that it's virtually impossible.

"Simple Gender Change"
- Engineering Diagrams That Look Like Shitposts

@mntmn@mastodon.social One gets noise cancellation just by terminating V+ and V- to the same impedance, instead of terminating one side to circuit ground. External noise induces roughly the same noise voltages on both lines, so noise is rejected. It works regardless of whether the signal is symmetric or not. This is called "balanced" signaling. "Differential" signaling is a special case of balanced signaling in which the voltages on both lines are also equal and opposite. My understanding, if I got it right, is that balanced signaling is sufficient for low-noise audio, so it's wrong to say this noise suppression comes from differential "signaling" - it does not, it comes from the termination impedance. But for high-speed digital interfaces, I think differential signaling is still needed to suppress radiated EMI.

@gentooP@social.mikutter.hachune.net @lamp@kitty.haus "I don't see any hardware implementation but it is doable in a daw."It's truly the dark age of analog electronics... It's called Automatic Gain Control circuit, was invented 100 years ago, and was the basic circuit found in all analog radio receivers and TVs, so its hardware implementation is well-known and described in all books about radios. One problem though, AGC is usually slow reacting because you don't want a volume that keeps fluctuating. For this particular application it must have a small time constant so it's a balance between how fast and how "flaky" it is. https://en.wikipedia.org/wiki/Automatic_gain_control