One of the first things you learn in electronics is how to identify a resistor’s value. Through-hole resistors have color codes, and that’s generally where beginners begin. But why are they marked ...

Some people look at a venerable resource like resistor color code charts and see something tried and true, but to [Andrew Jeddeloh], there’s room for improvement. A search for a more intuitive way is ...

If you manage a New York apartment building, you’ve got to know where that water is flowing—for putting out fires and for upgrades, maintenance and inspections. With pre-war buildings and ancient ...