#759 Chad Orzel - A Brief History of Timekeeping; from Stonehenge to Atomic Clocks

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Dr. Chad Orzel is an Associate Professor in the Department of Physics and Astronomy at Union College in Schenectady, NY, where he teaches a wide range of classes, and does research on atomic, molecular, and optical physics. His latest book is A Brief History of Timekeeping: The Science of Marking Time, from Stonehenge to Atomic Clocks.

In this episode, we focus on A Brief History of Timekeeping. Topics include: timekeeping as a human universal; what a clock is; using the “movements” of the Sun; using other stars and the moon; how the cycle of the zodiac got invented; how different calendars got created; the influence of politics and religion on timekeeping; the first clocks; how mechanical clocks work; how global empires and astronomy influenced the evolution of clocks; the development of standardized time zones; the ways by which the physical nature of time differ from the human understanding of it; quantum clocks and their applications; and potential new clocks in the future.

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A HUGE THANK YOU TO MY PATRONS/SUPPORTERS: PER HELGE LARSEN, JERRY MULLER, HANS FREDRIK SUNDE, BERNARDO SEIXAS, OLAF ALEX, JONATHAN VISSER, ADAM KESSEL, MATTHEW WHITINGBIRD, ARNAUD WOLFF, TIM HOLLOSY, HENRIK AHLENIUS, JOHN CONNORS, FILIP FORS CONNOLLY, DAN DEMETRIOU, ROBERT WINDHAGER, RUI INACIO, ZOOP, MARCO NEVES, COLIN HOLBROOK, SIMON COLUMBUS, PHIL KAVANAGH, MIKKEL STORMYR, SAMUEL ANDREEFF, FRANCIS FORDE, TIAGO NUNES, ALEXANDER DANNBAUER, FERGAL CUSSEN, HAL HERZOG, NUNO MACHADO, JONATHAN LEIBRANT, JOÃO LINHARES, STANTON T, SAMUEL CORREA, ERIK HAINES, MARK SMITH, JOÃO EIRA, TOM HUMMEL, SARDUS FRANCE, DAVID SLOAN WILSON, YACILA DEZA-ARAUJO, ROMAIN ROCH, DIEGO LONDOÑO CORREA, YANICK PUNTER, ADANER USMANI, CHARLOTTE BLEASE, NICOLE BARBARO, ADAM HUNT, PAWEL OSTASZEWSKI, NELLEKE BAK, GUY MADISON, GARY G HELLMANN, SAIMA AFZAL, ADRIAN JAEGGI, NICK GOLDEN, PAULO TOLENTINO, JOÃO BARBOSA, JULIAN PRICE, EDWARD HALL, HEDIN BRØNNER, DOUGLAS FRY, FRANCA BORTOLOTTI, GABRIEL PONS CORTÈS, URSULA LITZCKE, SCOTT, ZACHARY FISH, TIM DUFFY, SUNNY SMITH, JON WISMAN, MORTEN EIKELAND, DR BYRD, DANIEL FRIEDMAN, WILLIAM BUCKNER, MAU MARIA, PAUL-GEORGE ARNAUD, LUKE GLOWACKI, GEORGIOS THEOPHANOUS, CHRIS WILLIAMSON, PETER WOLOSZYN, DAVID WILLIAMS, ROOFTOWEL, DIOGO COSTA, ANTON ERIKSSON, CHARLES MOREY, ALEX CHAU, AMAURI MARTÍNEZ, CORALIE CHEVALLIER, PEDRO BONILLA, BANGALORE ATHEISTS, LARRY D. LEE JR., OLD HERRINGBONE, STARRY, MICHAEL BAILEY, DAN SPERBER, ROBERT GRESSIS, TOM ROTH, THERPMD, IGOR N, JEFF MCMAHAN, JAKE ZUEHL, BARNABAS RADICS, MARK CAMPBELL, RICHARD BOWEN, TOMAS DAUBNER, LUKE NISSEN, CHRIS STORY, AND MANUEL OLIVEIRA!

A SPECIAL THANKS TO MY PRODUCERS, YZAR WEHBE, JIM FRANK, ŁUKASZ STAFINIAK, TOM VANEGDOM, BERNARD HUGUENEY, CURTIS DIXON, BENEDIKT MUELLER, VEGA GIDEY, THOMAS TRUMBLE, KATHRINE AND PATRICK TOBIN, JONCARLO MONTENEGRO, ROBERT LEWIS, AND AL NICK ORTIZ!

AND TO MY EXECUTIVE PRODUCERS, MATTHEW LAVENDER, SERGIU CODREANU, AND BOGDAN KANIVETS!