~j0ule

You don't need lots of money to make high voltage capacitors, in fact some pretty decent ones can be made with some cheap and readily available materials. This is because capacitors are very simple devices consisting only of a dielectric and two plat

From the hours of 11 pm to 4am Saturday night I decided to make an educational video. Don’t ask me why. [img]../storage/fragment_images/70811318321896840_53787c20e1244405e0d2e08c20ea51a2.jpg[/img]I wanted to do some signal processing for my first vi

I’ve always wanted to make one of these, but never got around to it until recently. However, after finding the most adorable tiny flyback in a 5 inch TV, I felt it needed a good job. I tried a few different circuits to make a plasma speaker, but both

[img]../storage/fragment_images/80343007468688700_52a927436e8df267febe05b5d60b7a44.jpg[/img]Originally owned by the Icelandic ferry service Finnmark Fylkesrederi og Ruteselskap, the vessel “Tufjord” had in 2001 found its way into the hands of a Califo

Nice to meet you, my name is ~j0ule. I am a polymath who spends almost all their time exploring engineering & the universe of applied physics. [img]../storage/fragment_images/78909057053581440_9864d957c1b92a7ec7a8c63b2b49a63f.jpg[/img]My speci

This is a project I took from conception, to sketch, to working design in about 4 month’s time. It is the most powerful handheld x-ray source in existence. You can build one too!  [url=https://github.com/gigaj0ule/portable_xray]https://github.c

A rat 🐀 done bit my sister 👧 Nell.  (with AI on the moon 🌙 )   Her face and arms began to swell 🤒 .  (and AI’s on the moon 🌙 )  I can't pay no doctor bill 🚑 . (but AI’s on the moon 🌙 )  Ten yea

All powernet servers use rj45 ethernet "patch cable". It is one of the most common cables on earth, built like so: [img]../storage/fragment_images/87611002970736880_f0e58c47c7a6aab3ad8f91b5d119c738.jpg[/img][ol][li]Polymer skin  [/li][

[img]../storage/fragment_images/45021105101430650_c1c2e338ae21da28e4392743d527f3aa.jpg[/img][t]💖 Do what you love[/t]One of the most important things any human should know, is that life is a marathon and not a race. We all have activities which we

Civilpedia is hitchiker's guide to earth. Live long and prosper <3

[url=https://sci-hub.se/10.1007/s12274-018-2139-0]https://sci-hub.se/10.1007/s12274-018-2139-0[/url] "Low-cost room-temperature sodium-ion batteries (SIBs) are expected to promote the development of stationary ene rgy storage applications. Howeve

This is a list of active, and solved, or wontfix issues for Civilpedia. Development help is welcome! Please reach out to @joule if interested.   [b]Feedback & Improvements[/b] [ul][li]Use SMS not email, with active hours[/li][/ul]

[m]⍁LaTeX{} + e^{i⍁pi} + 1 = NaN[/m] Just sit ⍁ right back and you'll hear a tale a [b]tale of[/b] a fateful ⍁ trip, that [i]started[/i] from this [url=https://frozen.port]frozen port,[/url] aboard this [u]fun road[/u] trip.&#

Lately I've been putting the finishing touches on this website. Some clever java-script hacks to allow the back button to work with endless scrolling. Another neat javascript thing I implemented was loading images asynchronously as you scroll down a

I did some experiments today with trying to detect propane using a 3.33um filter. This filter is selective for methane, which should be inside "natural gas" in detectable amounts. My first experiment was to see if I could see the gas c

The control PCB for the HandyVent is a simple circuit board made with through-hole components that are easy to solder. This short page will help you understand how to build it.  [img]../storage/fragment_images/10973986380014022_70ab1fa4b23a0295627249

Both face shields, and the PET plastic sheets which they are made from are in short supply right now. This project will let you build a face shield from any thin translucent plastic, even a bread bag, by spreading the plastic tightly with a 3D printed pa

It is a tale very commonly told that Lead Acid batteries are a “cheaper” solution than Lithium batteries for off-grid and solar storage. As of 2019 that is patently false, and the purpose of this article is to explain how this remarkable fact comes to

In 1895, a professor by the name of Wilhelm Conrad Rontgen discovered a source of invisible rays which were capable of penetrating materials not normally translucent to ordinary light. Not only this, but these mysterious rays also caused certain chemicals

The goal of this project was to build an inexpensive portable x-ray machine, since such a device didn’t seem to exist! Odd, since such a machine could prove to be very useful in remote or underequipped areas such as army camps or poorer countries. T

Invented in 1913 by William D. Coolidge, the Coolidge tube is by far the most popular method used to generate x-rays. Essentially it’s just a thermionic diode, but one optimized for high voltages and high powers. Like a thermionic diode a Coolidge tube

The 2x2A is a vacuum rectifier that, before the advent of the silicon diode, was used to rectify the high voltage needed for fun things such as television tubes. Now the silicon diode replaced the 2×2 nearly 40 years ago at the time of this writing, but

Fields are an imaginary concept where, at every point in space (be it 2d, 3d, or any-d), there exists a value at that point. What this value represents is up to you, as fields are only imaginary abstractions! (yes, including electric fields too). [t]S

Sets are a tool that we can use to keep track of objects. Whether the objects are numbers, kites, rocks, or starfish, it doesn't matter! A set is a very helpful abstraction that makes it easy for us to describe large collections of objects by their p