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The Riefler escapement is a mechanical escapement for precision pendulum clocks invented and patented [1] by German instrument maker Sigmund Riefler in 1889. [2] It was used in the astronomical regulator clocks made by his German firm Clemens Riefler from 1890 to 1965, [ 3 ] which were perhaps the most accurate all-mechanical pendulum clocks made.
Sigmund Riefler was born on 9 August 1847 to Magdalena and Clemens Riefler. He studied mathematics, geodesy and mechanical engineering at the Technical University of Munich, and then physics and astronomy at the University of Munich. From 1870 he worked as an engineer in the Royal Prussian Land Survey, surveying land in Schleswig. [3]
After NBC expanded Today to seven days a week in the 1990s, the name Weekend Today was adapted primarily for promotional purposes. The Saturday edition of the program, titled Saturday Today since March 2022, is broadcast live in alignment with the weekday editions of Today from 7:00 to 9:00 a.m. Eastern Time .
TODAY Show guests Monday, February 3 (7-9 a.m.) Black History Month: First Black Pilot to Fly Solo Around the World. Amy Schumer on "Kinda Pregnant." Nicole Sachs on "Mind Your Body."
Jenna Bush Hager said a tearful goodbye to her former Today with Hoda & Jenna co-host Hoda Kotb.. Kotb, 60, departed the morning show after 17 years on the Friday, Jan. 10, episode of the Today ...
Kotb's last day on both Today and the show's more relaxed fourth hour will be Friday, Jan. 10, NBC previously announced. Craig Melvin will replace Kotb in the show's 7 a.m. and 8 a.m. hours, while ...
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Couric took over Norville’s hosting spot in 1991 and remained on Today through 2006. She recalled her decision to leave the show in her 2021 memoir, Going There, writing, “By 2005, I was at a ...