Source: First IC 🙂, by Sam Xeloof
Sam’s description of making a lithographically-fabricated integrated circuit — the “Z1” PMOS dual differential amplifier chip — in a home garage.
Category: Amusement
Glass for geeks: An in-depth tour of Nikon’s Hikari Glass factory | Imaging Resource
Source: Glass for geeks: An in-depth tour of Nikon’s Hikari Glass factory | Imaging Resource, by Dave Etchells
A special tour by Nikon of their Hikari Glass factory in Akita Japan, hosted by three of Hikari’s top executives, showing their whole process for creating optical glass lens blanks, from start to finish.
Six Degrees of Wikipedia, by Jacob Wenger
Source: Six Degrees of Wikipedia, by Jacob Wenger
Inspired by the concept of six degrees of separation, Six Degrees of Wikipedia traverses links on Wikipedia to find the least number of clicks it takes to travel between any of the nearly six million pages on the free online encyclopedia.
Let’s Learn About Waveforms, by Josh Comeau
Source: Let’s Learn About Waveforms, by Josh Comeau
An interactive guide to waveforms, the fundamental physics of sound, how those relate to music and harmony, and how to build complex tones from simple ones — aimed at a general audience, accessible to everyone.
Building a Stylish Home Aquaponics System: The Basics
Source: Building a Stylish Home Aquaponics System: The Basics – The Smart House
How I transformed my freshwater aquarium into an aquaponics garden for year-round organic produce (and stopped doing water changes).
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In this article we aren’t going to focus on my aquariums themselves, but instead we’re going to focus on all that waste the freshwater fish produce. … Where a hydroponics system requires you to add nutrients to the water to feed your plants (basically fertilizer), an aquaponics system uses all the nitrates produced by your fish as natural fertilizer!
it’s not quite as straightforward as sticking a plant in some nutrient-rich water and letting it grow. The water has to be in a near-constant state of movement for starters, and believe it or not the roots actually need to be exposed to the air as well (otherwise you get root-rot and your plants die). … The answer is to use a very clever plumbing contraption known as a Bell Siphon which is designed to do exactly what we need in our grow beds.
