Historical clue formulations

• 10,000,000 ergs — 2026-08-27
• Basic unit of work — 2026-04-14
• Unit in thermodynamics — 2021-07-25
• Watt-second — 2019-04-28
• Unit of energy — 2018-02-23
• Work measure — 2016-06-16
• About a quarter of a calorie — 2015-11-07
• 10,000,000 ergs — 2013-01-06
• Work measure — 2012-10-26
• Unit of energy — 2010-07-04
• Physicist James who contributed to the laws of thermodynamics — 2010-02-12
• Eponymous physicist — 2007-05-06
• Unit of energy — 2003-09-14
• Physics unit — 2002-09-04
• 10,000,000 ergs — 1998-03-01