L’incroyable précision des horloges atomiques

Elles sont peu connues, et pourtant les horloges atomiques sont indispensables aussi bien à nos télécommunications qu’au #GPS. Elles servent aussi à tester des théories fondamentales de la physique. Et leurs prochaines applications sont encore plus impressionnantes.

Par Cécile Michaut › https://www.mediapart.fr/journal/culture-et-idees/030825/l-incroyable-precision-des-horloges-atomiques?at_medium=rs-cm&at_campaign=mastodon&at_account=mediapart

Den senaste tiden har polisen fått in närmare 15 anmälningar på lika många dagar om stöld av GPS- och datorutrustning från skogsmaskiner i polisregionerna Bergslagen, Mitt och Väst. Förmodligen handlar det om en och samma liga vid alla stölderna.

https://blog.zaramis.se/2025/08/03/stoldvag-mot-skogsmaskiner/

Variante bretonne du système GPS, le Galette Positioning System : demander la recette de galette du coin. Permet une précision au demi kilomètre je pense. #gps

What is the most universal way of representing GPS coordinates that Google Maps can also understand? I often need to give people a coordinate and use other maps than Google. Then when my partners copy the coordinate I to Google Maps, they end up in the Pacific Ocean or something.

EDIT: Got the answer!

Sweden reports Russian jamming against Astra satellites

The Russian jamming signals, which began after Sweden joined NATO, are to be the subject of an ITU meeting next week.

https://www.heise.de/en/news/Sweden-reports-Russian-jamming-against-Astra-satellites-9773930.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon

2025 One Hertz Challenge: Precise Time Ref via 1 Pulse-Per-Second GPS Signal - Our hacker [Wil Carver] has sent in his submission for the One Hertz Challenge: Pr... - https://hackaday.com/2025/07/29/2025-one-hertz-challenge-precise-time-ref-via-1-pulse-per-second-gps-signal/ #voltage-controlledcrystaloscillator #ovencontrolledcrystaloscillator #gpsdisciplinedoscillator #clockhacks #ocxo #vcxo #gps

A GP doling out football tickets? It may sound daft, but ‘social prescribing’ could make a difference in the NHS | Devi Sridhar https://www.theguardian.com/commentisfree/2025/jul/29/social-prescribing-football-tickets-gp-nhs-drugs #WesStreeting #Mentalhealth #Doctors #Society #Health #UKnews #NHS #GPs

"GPS Jamming Extends to Low-Earth Orbit as Pentagon Races to Bolster Constellation" by Air & Space Forces Mag (Fediverse presence not found #FPNF: if you know them, invite them) - The most concentrated #GPS jamming right now is in Russia-Ukraine war zone, by both sides. US Space Force has deployed some of the more powerful GPS III sats. Nearly all Low Earth Orbit satellites use GPS. Jamming defenses in work. https://www.airandspaceforces.com/gps-jamming-extends-to-leo/ #GNSS #business #military #PNT #positioning #navigation #timing

Scientists: We need to see black holes to make GPS work.
Humanity: *drowns them out with WiFi and phone signals*

This is why we can't have nice things... or accurate navigation. The irony? Our tech addiction is literally blocking the cosmic signals that make our tech work.

https://science.slashdot.org/story/25/07/28/043232/astronomers-use-black-holes-to-pinpoint-earths-location-but-are-phones-and-wifi-blocking-the-view

Oh and I got GPS working too! The least amount of troubleshooting required, I just had to enable "Location" in the settings app

The reason I didn't find it was because it was "hidden" under "Privacy & Security". I'm sure all of that will be baked in to the Welcome app at some point to save you from having to go look for everything yourself, so no biggie!

Satelliten-Navigation: Russland stationiert mehr Jammer in der Nähe zu Estland

Systeme bei der russischen Stadt Kingisepp sollen Kommunikation stören, Radarsysteme ausschalten und Kontrolle über das elektromagnetische Spektrum erlangen.

https://www.heise.de/news/Satelliten-Navigation-Russland-stationiert-mehr-Jammer-in-der-Naehe-zu-Estland-10500523.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon