# Off-Topic Thread vol. 2 **URL:** \ **Category:** Intergalactic Summit\ **Created:** [July 4, 2019, 2:24pm UTC](https://forums.eveonline.com/t/off-topic-thread-vol-2/171718 "2019-07-04T14:24:46Z")\ **Posts on this page:** 1\ **Showing post:** 6086
**Author:** ![Ilyan\_Valtovist](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/ilyan_valtovist/32/461710_2.png) [@Ilyan\_Valtovist](https://forums.eveonline.com/u/Ilyan_Valtovist)\ **Post date:** [July 14, 2023, 6:26pm UTC](https://forums.eveonline.com/t/off-topic-thread-vol-2/171718/6086 "2023-07-14T18:26:15Z")
> [@On Those With Inferior Blood](https://forums.eveonline.com/t/on-those-with-inferior-blood/412029/132): > > Did you know that just by measuring the shadows at the same time in two different places only 100 meters apart, over the course of the day, using the most primitive techology available: ‘two sticks’, you can demonstrate planetary curvature? Ah! I get your point, rhetorically, but should any of us find ourselves in any kind of bind where you need to figure out the radius of the body we find ourselves on, 100 meters is probably going to be a bit… short for anything that’s bigger than a very modest asteroid. Local terrain variations and measurement imprecision would dominate. You’ll want a good number of kilometers, like a few hundred, even though you have to make observations on the same day, so it helps if your civilisation has also figured out things like calendars, couriers, letters, and scientifically-minded friends. --- _[View the full topic](https://forums.eveonline.com/t/off-topic-thread-vol-2/171718)._