Ground Effect xkcd.com/3305/
330 reposts3.7K likes
Ground Effect xkcd.com/3305/
330 reposts3.7K likes
Seriously, I first noticed, watching Michael Johnson's 400m at the Olympics, and then watching cheetahs running, how their heads just follow a virtually straight horizontal line from start to finish, no bobbing or jumping. youtu.be/r4m-yMl1wD8 youtu.be/NtqiGiO6ZD0
Title text: "Runners looking for aerodynamic advantage typically wear sneakers because some fancy dress shoes can create wingtip vortices." Alt text: https://explainxkcd.com/3305#Transcript