Historical clue formulations

• British engineer James — 2026-03-20
• Bit of power — 2025-12-28
• "W" on a light bulb — 2025-11-30
• Engineer who supposedly found inspiration while tending to a boiling kettle — 2025-10-11
• Unit of power — 2024-11-06
• Power unit — 2024-01-03
• J.J. or T.J. of the N.F.L. — 2023-07-08
• Unit commonly following "40," "60," "75" and "100" — 2021-09-08
• Electrical unit — 2021-07-13
• Light bulb unit — 2021-03-15
• 1/746 horsepower — 2019-06-14
• Light amount? — 2019-06-12
• Engineer who coined the term "horsepower" — 2019-05-19
• Power unit — 2019-02-15
• One joule per second — 2017-11-04
• Power figure? — 2017-09-27
• Inventor with three steam engine patents — 2017-04-08
• Steam engine pioneer James — 2016-01-15
• Joule/second — 2015-11-18
• Light bulb unit — 2015-09-15
• Light amount? — 2015-05-03
• ___-hour — 2015-04-16
• Bit of power — 2014-11-09
• Unit often preceded by kilo- — 2014-05-20
• Light bulb measure — 2014-03-24
• Volt-ampere — 2014-02-22
• Unit of power — 2014-01-21
• Word after 60-, 75- or 100- — 2013-07-30
• Bulb unit — 2013-03-03
• What "W" stands for on a light bulb — 2012-08-27
• James with an electrical unit named after him — 2012-02-08
• Light bulb unit — 2011-12-12
• Small bit of power — 2011-02-13
• Light bulb unit — 2011-01-24
• Steam engine pioneer — 2010-09-04
• The "W" of kWh — 2010-04-26
• Light bulb unit — 2010-04-19
• Eponymous engineer — 2010-03-28
• Small amount of power — 2008-12-14
• Power unit — 2008-12-01
• Volt-ampere — 2007-09-21
• Eponymous Scottish inventor — 2007-02-17
• Light bulb unit — 2006-04-04
• Light bulb unit — 2006-02-13
• Reagan's first interior secretary — 2003-10-17
• Light bulb unit — 2002-04-23
• Interior Secretary under Reagan — 1998-12-12
• Power unit — 1998-06-20
• Light bulb unit — 1997-06-30
• Bulb unit — 1996-08-12