The MEaSURE Project
@themeasureproject.bsky.social
Join a bi-annual, global experiment to calculate Earth's radius! I'm a STEM teacher based in Pennsylvania, USA looking to get classrooms around the world collaborating.
The corners of each triangle are draggable, and it only works for angles in the first quadrant.
October 24, 2025 at 7:24 PM
The corners of each triangle are draggable, and it only works for angles in the first quadrant.
If you made a measurement this past equinox and haven't submitted it yet, please do! I will include it and update the results accordingly.
If you find this project worthwhile or interesting, good news! There's another equinox in the spring!
sites.google.com/view/themeas...
If you find this project worthwhile or interesting, good news! There's another equinox in the spring!
sites.google.com/view/themeas...
MEaSURE
Measuring Earth's Size Using a Revision of Eratosthenes
sites.google.com
September 23, 2025 at 11:27 PM
If you made a measurement this past equinox and haven't submitted it yet, please do! I will include it and update the results accordingly.
If you find this project worthwhile or interesting, good news! There's another equinox in the spring!
sites.google.com/view/themeas...
If you find this project worthwhile or interesting, good news! There's another equinox in the spring!
sites.google.com/view/themeas...
With three measurers come three PAIRS of measurements. This means three independent calculations of Earth's radius.
September 23, 2025 at 11:27 PM
With three measurers come three PAIRS of measurements. This means three independent calculations of Earth's radius.
Not unexpected, but participation is starting off slowly. I am hopeful that participation now will encourage more participation later. The best part is, every equinox's astronomical conditions are identical, so previous entries can still be part of the calculation!
We have three data points so far.
We have three data points so far.
September 23, 2025 at 11:27 PM
Not unexpected, but participation is starting off slowly. I am hopeful that participation now will encourage more participation later. The best part is, every equinox's astronomical conditions are identical, so previous entries can still be part of the calculation!
We have three data points so far.
We have three data points so far.
🥳 First response! Thanks for participating!
September 22, 2025 at 5:57 PM
🥳 First response! Thanks for participating!
Oh my goodness, these are awesome!
June 15, 2025 at 4:02 PM
Oh my goodness, these are awesome!