Younger electronic engineers may see resistors with old-style color codes to display their values a little less than those from previous years, but if there’s a shibboleth among those who wield a ...

The colour of bodily fluids can play a key role in diagnosing, investigating and prescribing for a wide range of medical ...

Clearing out a friend’s loft, I came across a box containing an unfinished game of Mastermind. The pegs weren’t the normal colours, so maybe it was a pirate ...

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 ...