draw a line, and extend it deflected by a fixed angle. Continue, adding the angle again each time. The result is a Euler spiral pic.twitter.com/78Wrg8JJWJ
Voyager entre la Terre et la Lune sans dépenser de carburant, c'est possible 😃 Hé oui, il suffit d'aller voir un point de Lagrange et ensuite, on fait absolument ce qu'on veut…
Je vous propose un "grand tour" du système Terre-Lune, sans aucune manœuvre ! 👇👇👇 pic.twitter.com/XgRVkSCZ7I
The harmonic series Σ(1/n) diverges. What if you remove all terms with the digit 9 in the denominator? Does it still diverge? (Spoiler: the next tweet contains the answer.) [1/4]
an object circling an irrotational vortex does not itself rotate. zooming in, and cancelling the circling rotation, we see this is because the currents push it to rotate in the opposite direction pic.twitter.com/al9qWXHE9P
This is a useful chart for anyone interested in UK death rates and how long it takes to report them (which is important information if you want to interpret the latest figures, estimate growth rates, etc.). https://t.co/CLPqLaovZy
