Your maps would drift 7 miles off course daily without Einstein.
Clocks tick faster in orbit, so every GPS satellite corrects for warped time.
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More tech facts
Tech facts about the machines you use every day. Your colour printer hides its serial number on every page, the close-door button in most lifts does nothing, and Bluetooth is named after a Viking king. Sourced, short and a little unsettling.
- Your colour printer hides its serial number on every page.
- The close-door button in most lifts does nothing.
- A Belgian candidate picked up 4,096 votes that did not exist in 2003.
- Satellite navigation is the same problem solved the same way.
- The default Nokia ringtone is a 19th-century guitar solo.
- Bluetooth is named after a Viking king.