Mastodawn

I picked this up in a thrift store; not only is it a #clock/calendar but it has a slide-out #calculator keyboard.
On Wednesday I set it to the correct time. Today, Sunday, it's already 12 seconds fast. That would make it 18½ minutes fast after a year. Might be the least accurate digital movement I've ever actually owned.

Resolviendo la incógnita 🌐1d ago

Astrolabio con reloj de custodia, con decoración grutesca, de Núremberg de 1565-1570. Aparte del movimiento de los astros a 40º y 50º de latitud en cada cara del tímpano, los días del mes, las letras dominicales y el santoral. 🏛️MET #mecanica #mechanics #herramientas #tools #clock #relojes

Geobert 4d ago

Ikea Time

#photography #vernissage #darktable #France #Paris #streetPhotography #clock

That commercial venue welcomed Ikea and all the way from entrance to reaching the actual Ikea store, there were many display spots with Ikea furniture. Free advertisement I guess, probably one of the conditions to open a store there.
// Exif on post’s instance

Olly 👾5d ago

Creating an Ultra-Stable Lunar Clock with a Cryogenic Silicon Cavity Laser.

Phase-coherent lasers are crucial for many precision tasks, including timekeeping. Here on Earth the most stable optical oscillators are used in e.g. atomic clocks and many ultra-precise scientific measurements, such as gravitational wave detection.

⁉️Since these optical oscillators use cryogenic silicon cavities, it’s completely logical to take this principle and build a cryogenic silicon cavity laser on the Moon.⁉️

https://www.arxiv.org/abs/2602.06352

#ultrastable #lunar #clock #space #tech #engineering #media #science #news