Just back from measuring our latitude (which I do roughly four times a year) and, for the first time, our longitude.
Latitude was pretty good, got to within about 15 km.
Longitude less good. Got about 6.8 degrees, but the actual value is about 3 degrees.
Wondering what went wrong ... need to think about how to "fix" that.
#Outreach #RecMaths #RecreationalMathematics #Latitude #Longitude #Solstice #Measurement
Five stars:
Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time by Dava Sobel is a history of the longitude problem and the story of a self taught clock maker who built the first seaworthy time pieces that were accurate enough for measuring a ship's east/west movement.
https://pussreboots.com/blog/2026/comments_05/longitude.html
Sensing Longitude Amongst Migratory Birds
"Migratory songbirds solved the longitude problem long before humans came down from the trees, yet we are only beginning to understand how birds deal with this incredibly difficult problem"
#Longitude #Navigation #Migration #MagneticFields https://grrlscientist.medium.com/sensing-longitude-amongst-migratory-birds-a6150ec16a10
Sensing Longitude Amongst Migratory Birds
"Migratory songbirds solved the longitude problem long before humans came down from the trees, yet we are only beginning to understand how birds deal with this incredibly difficult problem"
#Longitude #Navigation #Migration #MagneticFields https://grrlscientist.medium.com/sensing-longitude-amongst-migratory-birds-a6150ec16a10
Sensing Longitude Amongst Migratory Birds
"Migratory songbirds solved the longitude problem long before humans came down from the trees, yet we are only beginning to understand how birds deal with this incredibly difficult problem"
#Longitude #Navigation #Migration #MagneticFields https://grrlscientist.medium.com/sensing-longitude-amongst-migratory-birds-a6150ec16a10
Sensing Longitude Amongst Migratory Birds
"Migratory songbirds solved the longitude problem long before humans came down from the trees, yet we are only beginning to understand how birds deal with this incredibly difficult problem"
#Longitude #Navigation #Migration #MagneticFields https://grrlscientist.medium.com/sensing-longitude-amongst-migratory-birds-a6150ec16a10
The good news: #DuckDB now includes #Geometry as a built-in type, a major step forwards for this #database engine.
The bad news: it stores #Geographic #Coordinates backwards, with #longitude first. Beware of interoperability with other software.
Name Description GEOMETRY Geospatial entity The GEOMETRY data type is used to store and manipulate geometric objects, such as points, lines, and polygons. The GEOMETRY type was part of the spatial extension but became a built-in data type in DuckDB v1.5. Most of the benefits of having GEOMETRY as a built-in type (e.g., storage optimizations, statistics, etc.) are therefore only available in databases using storage version v1.5 and above. However, almost all of the associated functions for working with geometries (e.g., calculating distances, areas, intersections) are still part of spatial. Types of Geometries Conceptually, the GEOMETRY type follows the core…
Latitude and longitude of United Kingdom
United Kingdom latitude longitude codes. Where is United Kingdom 🇬🇧 on map? Latitude, longitude and the GPS coordinates of United Kingdom easy and free to find out!
https://latlong.info/united-kingdom
#latitude #longitude #gps #map #coordinate #unitedkingdom #uk #geo #geography #utm #where #latlong
Latitude and longitude of United States - GPS Coordinates
United States latitude longitude codes. Where is United States 🇺🇸 on map? Latitude, longitude and the GPS coordinates of United States easy and free to find out!
https://latlong.info/united-states
#usa #unitedstates #geo #latitude #longitude #gps #map #coordinates #webmaster #latlong
Colin the Mathmo
Sarah Sammis
GrrlScientist ⧖ Ⓥ SciComm 🇺🇦
GrrlScientist ⧖ Ⓥ 🇺🇦
GrrlScientist ⧖ Ⓥ 
GrrlScientist ⧖ Ⓥ 🇺🇦
Luís de Sousa
Kevin Laporte
Jonas S