Free-sprung

Episode 16

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The simplest solution is often the best solution. Jon and Chris touch on the history of timekeeping and then dive into a discuss about the variables that play into precision, mechanical timekeeping.

Original image from https://upload.wikimedia.org/wikipedia/commons/6/6d/Jantar_Mantar%2C_Jaipur_India.jpg

Samrat Yantra
A massive equinoctial sundial in Jaipur, India
jantarmantar.org

Original image from https://upload.wikimedia.org/wikipedia/commons/2/22/Sculpture_at_The_Royal_Observatory%2C_Greenwich_-_DSC05553.JPG

Dolphin Dial
Jon’s favourite example of a sundial, located in Greenwich, England
rmg.co.uk

Original image from https://www.youtube.com/watch?v=1moRfIXCfak

Wadokei
A wadokei wristwatch created by Japanese watchmaker, Masahiro Kikuno, wherein the length of the hours change according to the time of year
youtube.com

Original image from https://upload.wikimedia.org/wikipedia/commons/a/a4/Christiaan_Huygens-painting.jpeg

Christiaan Huygens
Inventor of the pendulum clock & early, portable timepieces that employed hairsprings & balance wheels as their regulators
en.wikipedia.org

Original image from https://upload.wikimedia.org/wikipedia/commons/1/10/13_Portrait_of_Robert_Hooke.JPG

Robert Hooke
In addition to Huygens, Hooke is also credited with bringing hairsprings to the craft of watchmaking
en.wikipedia.org

Original image from https://upload.wikimedia.org/wikipedia/commons/5/51/Guillaume_1920.jpg

Charles Édouard Guillaume
Invented several alloys that are effectively impervious to changes in temperature, dubbed invar & elinvar
en.wikipedia.org

Original image from https://upload.wikimedia.org/wikipedia/commons/3/32/Abraham_Louis_Breguet_02.jpg

Abraham-Louis Breguet
Creator of the Breguet Overcoil, a form of hairspring that helped to mitigate positional error & improve the performance of mechanical watches
en.wikipedia.org

This episode was released on May 8, 2018