- One calorie of heat is equivalent to 4.2 joules of work.
- One joule of output energy will energise approximately 6 miles of wire with no interference.
- The unit of absorbed dose is call the gray, which is the amount of energy in joules from the radiation absorbed per kilogram of the absorbing material.
- They reckon it would release two billion joules of energy.
- And a joule is indeed a sensible sort of unit in everyday life - a 60-watt lightbulb radiates 60 joules of energy every second.