Possible Clues:

• About 624 billion electron-volts
• Nothing more is needed to make a little energy, therefore
• Tiny fraction of a foot-pound
• Amount of work - Grenadier Guards have it both ways
• Joule bit
• One of a joule's 10,000,000
• Unit of work therefore incomplete
• Unit of force
• Very tiny unit of work
• A ten millionth of a joule