› added 8 months ago

23

TIL about the Ham Sandwich Theorem, which states that states that given n measurable "objects" in n-dimensional Euclidean space, it is possible to divide each one of them in half (with respect to their measure, e.g. volume) with a single (n − 1)-dimensional hyperplane.

Read more wikipedia.org

via reddit.com

p14 TIL in Afghanistan there are girls who dress and live as boys (going to school, etc.) until marrying age, then get treated fully as girls.
XEDPk TIL that according to a report about movie theater popcorn by the Center for Science in the Public Interest, "A medium-size buttered popcorn contains more fat than a breakfast of bacon and eggs, a Big Mac and fries, and a steak dinner combined."
5XMD TIL there is a species of tiger beetles that run faster than their eyes can keep up. They run towards their prey, stop and re-evaluate the situation, and then sprint again, hoping they’ll run into their prey. They run at 5.6 mph, which is equivalent to a human running 480 mph.
ZpAVa TIL: that the color of your nail polish can affect your blood oxygen reading.
dGxE TIL that ghost peppers are used in India as a repellant to ward off elephants, preventing them from eating and destroying crops