Ethernet cables are not exactly exciting. After all, they all look the same. One thing you might notice, though, is that they come in a variety of colors, like blue, yellow, red, green, gray, and even ...

Hospitals often use code names to alert staff to an emergency. Code blue means a medical emergency. Code red means fire or smoke. Code black typically means there is a bomb threat. Hospitals are the ...

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 ...