Lmst

Clockmaker Solves Seafaring Mystery - Michael Saylor on JP

#harrison #johnharrison #clock #longitude

https://blog.gslin.org/archives/2025/06/05/12434/reverse-geocoding-%e7%9a%84%e7%b0%a1%e5%8c%96/

Reverse geocoding 的簡化

#algorithm #douglas #geocoding #latitude #longitude #map #peucker #ramer #reverse #visvalingam #whyatt

Mapping latitude and longitude to country, state, or city

https://austinhenley.com/blog/coord2state.html

#HackerNews #Mapping #Latitude #Longitude #Country #State #City #Geolocation

LOL just had the pleasure of posting this in a corporate Slack

#gis #latitude #longitude

https://xkcd.com/2170/

XKCD comic explaning the number of digits in coordinates

28N 80W meaning: you're probably doing something space related
28.5N 80.6W pointing out a specific city
28.52N 80.68W You're pointing out a neighborhood
28.523N 80.683W You're pointing out a specific suburban cul de sac
28.5234,80.6830W you're pointing to a particular corner of a house
28.52345N 80.68309W You're pointing to a specific person in a room, but since you didn't include datum information, we can't tell who
28.5234571N 80.6830941W You're pointing to waldo on a page
28.523457182N 80.683094159W Hey check out this specific sand grain
(much longer version) Either you're handing out raw floating point variables, or you've built a database of atoms. In either case, stop.

The meridian 2° east of #Greenwich is a line of #longitude that extends from the #NorthPole across the #ArcticOcean, the #AtlanticOcean, #Europe, #Africa, the #SouthernOcean, and #Antarctica to the #SouthPole. The 2nd meridian east forms a #greatEllipse with the #178thMeridianWest.

@calvin
North: 66°03′N, Húsavik, Iceland
East: 178°1′4″E, Gisborne, New Zealand
South: 45°52′27″S, Dunedin, New Zealand
West: 175°12′0″W, Nuku'alofa, Tonga

It was actually fun to review all those. I was surprised to see NZ on there twice. I had thought Tasmania might be farther south. Also, I was expecting Tonga to be the farthest east I had been, not the farthest west.

#travel #FarthestPoints #Latitude #Longitude #geography

These are the farthest in each cardinal direction I have visited so far:

North: 56° Fort McMurray, AB, Canada
East: 178° Nausori, Fiji
South: 35° Surf Beach, NSW, Australia
West: 158° Waialua, HI, USA

What's the farthest in each cardinal direction you have visited?
#Travel #FarthestPoints #CardinalDirections #Maps #Geography #Latitude #Longitude

Longitude Festival’s 2025 lineup drop caused significant concern due to its overwhelming male dominance. https://www.caricatures-ireland.com/longitude-lineup-2025-cartoon/ #DistrictMagazine #festivals #longitude #music #mastodaoine

Longitude lineup 2025: black and white cartoon of two men sitting at a table, with a mobile phone on the table. One is looking down at the phone. First man's speech bubble: "Just ring her." Second man looking at phone speech bubble: "She might say no." First man, "she might say yes." Second man: "I get shy around women." First man: "You're booking acts for Longitude." Longitude is a music festival that takes place annually in Ireland, usually with a very low representation of female artists.

Moving on to my latest read, and this is something that I picked up at my recent visit to the Royal Observatory in Greenwich #Goodreads #ReadingChallenge #Bibliophile #Bookworm #CurrentlyReading #Longitude #JohnHarrison #DavaSobel #GMT

The cover of Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time by Dava Sobel

Ten years ago, I helped launch the new Longitude Prize when six of us (including the late Michael Mosley) presented six potential topics to the public for them to choose the focus of the £10M prize. They chose antimicrobial resistance, the challenge of bugs becoming resistant to antibiotics.

Today, the winner of that prize was announced: Sysmex Astrego for an impressive diagnostic test. Congratulations to them!

https://amr.longitudeprize.org/about-the-prize/

https://www.bbc.co.uk/programmes/b044mkxt

#Longitude #science

@johnflomax

It does make me wonder how great the longitudinal differences are.

#timezones #longitude #geography

have you ever tried navigating the center of Earth?

the core of the problem is that all latitudes and longitudes become one

#navigation
#geography
#core
#latitude
#longitude

#GIS #latitude #longitude #conversion #DMS
https://www.latlong.net/lat-long-dms.html

The World As They Knew It - The Legacy Of Greco-Roman Mapmaking
--
https://www.nytimes.com/2013/10/01/science/legacy-of-greco-roman-mapmaking.html <-- shared media article
--
https://isaw.nyu.edu/ <-- Institute for the Study of the Ancient World, New York University
--
#GIS #spatial #mapping #geography #surveying #history #ancienthistory #cartography #mapmaking #Rome #Greece #AncientRome #Roman #Greek #AncientGreece #solarsystem #measurements #antiquity #milestones #romanroads #geometry #earth #longitude #latitude

image - A third-century Roman coin shows Emperor Diocletian holding a globe, a symbol of power

map - A folio from a 15th-century Latin translation of Ptolemy’s influential “Geographia.”

cover - A 15th-century copy of an ancient manuscript from Constantinople.

Illustrations from the earliest manuscripts of the Agrimensores, the sixth century codex Arcerianus (A) and the ninth century codex Palatinus Vaticanus latinus 1564 (P), from Thulin’s edition (Leipzig: Teubner, 1913), plates 24 and 25.

The Science Behind LatLong: Understanding How GPS Works

GPS, or Global Positioning System, is a technology that has become an integral part of our daily lives. It allows us to navigate our way through unfamiliar places, track our fitness goals, and even order food delivery.

https://thinks.bcz.com/2023/05/22/the-science-behind-latlong-understanding-how-gps-works/

#gps #latitude #longitude #science

Is it Latitude,Longitude or Longitude,Latitude?

#mapbox #googleMaps #maps #organicMaps #longitude #latitude #dataVis

I promised this book I would be back to read it again.
Good the first time, better the second time for two reasons:
1 having since visited h1, h2, h3, & h4 in Greenwich Maritime Museum
2 having since seen 'h5' cheekily added to the final plot of Only Fools & Horses #longitude