Hacker News with Generative AI: Timekeeping

Lunase moon phase watch mechanism (genuineideas.com)
Before there were clocks there were the heavens. The sun to mark the day and the moon to light the night- their shadows counting down the hours. Overhead, celestial bodies arced across the sky, charting a map to the seasons and subtly precessing across the centuries.

Watches, Timekeeping, Astronomy, History

29 points by huhtenberg 3 days ago | 5 comments

Morse Code Clock (temporaldiscombobulator.com)

Morse Code, Timekeeping, DIY Projects

10 points by thunderbong 6 days ago | 2 comments

Elektročas HH3 – the most accurate pendulum clock on the planet (cern.ch)
Can a pendulum clock be good to one second in 158 million years? A piece of cake...

Timekeeping, Physics, Clocks, Accuracy

109 points by tverbeure 18 days ago | 42 comments

Elektročas HH3: the most accurate pendulum clock on the planet (cern.ch)
Can a pendulum clock be good to one second in 158 million years? A piece of cake...

Timekeeping, Physics, Clocks, Accuracy

7 points by fanf2 19 days ago | 1 comments

Unix Time and a Modest Proposal (johndcook.com)
It seems our choices are to add leap seconds and endure the resulting confusion, or not add leap seconds and allow the year to drift with respect to the day. There is a third way that deserves more consideration: adjust the position of the earth periodically to keep the solar year equal to an average Gregorian calendar day.

Timekeeping, Science, Proposals

50 points by tapan_jk 21 days ago | 39 comments

Meet your new Time Server (centerclick.com)
CenterClick produces the NTP200 series GPS based NTP Server Appliances that keep your equipment synchronized.

Timekeeping, Networking, Hardware, GPS

18 points by mooreds 34 days ago | 18 comments

Major leap for nuclear clock paves way for ultraprecise timekeeping (nist.gov)
A powerful laser shines into a jet of gas, creating a bright plasma and generating ultraviolet light. The light leaves a visible white line as it interacts with leftover gas in the vacuum chamber. This process helps scientists precisely measure the energy needed to excite the thorium-229 nucleus, which is the core of a future nuclear clock.

Nuclear Physics, Timekeeping, Technology, Scientific Advancements

12 points by abbeyj 40 days ago | 10 comments

Literature Clock (jenevoldsen.com)

Art, Creative Projects, Timekeeping

20 points by fanf2 55 days ago | 6 comments

The Relatively Messy Problem with Lunar Clocks (eos.org)
What time is it on the Moon?

Space Exploration, Astronomy, Timekeeping

4 points by Brajeshwar 64 days ago | 1 comments

The Principles of Mr. Harrison's Time-Keeper (incoherency.co.uk)
This post is a transcription, plus some commentary, of the Board of Longitude's 1767 document "The Principles of Mr. Harrison's Time-keeper", from scans on the University of Cambridge Digital Library.

History, Timekeeping, Science

62 points by surprisetalk 69 days ago | 14 comments

The Sundial Cannon of Åtvidaberg (2017) (amusingplanet.com)
In the not-too-distant past, before the invention of modern timekeeping devices, noontime —the moment when the sun is at the highest position in the sky— held special significance.

History, Timekeeping, Sweden, Astronomy

71 points by choult 94 days ago | 32 comments

'Nuclear clock' breakthrough paves the way for super-precise timekeeping (nature.com)

Physics, Timekeeping, Scientific Breakthroughs

3 points by objectdynamics 134 days ago | 0 comments

An introduction to the remontoire (watchaffinity.co.uk)

Watches, Mechanisms, Timekeeping

28 points by akbarnama 150 days ago | 3 comments

Lenticular Clock (instructables.com)

DIY Projects, Timekeeping, Art

192 points by animal_spirits 151 days ago | 46 comments

Researchers Figure Out How to Keep Clocks on the Earth, Moon in Sync (slashdot.org)