Category Archives: Answers

Why Phone Keypads and Calculator/Keyboard Keypads are Arranged Differently

Prototype Push Button Phone (1948)

John T. asks Why do keyboard keypads number 7,8,9 on down and phone keypads number 1,2,3 on down? It’s not clear why numbering pads designed for calculation have 7-8-9 at the top, although the practice of placing the larger numbers above the smaller can be seen as far back as the late 19th century on early mechanical cash registers, often […]

Read more

The Origin of the Color Belt Scheme in Martial Arts

blackbelt

White, yellow, orange, green, blue, purple and black, the colors of martial arts belts denote student development, skills and experience. However, contrary to popular belief, using colored belts to denote rank or ability in martial arts is a relatively recent invention in the otherwise ancient arts- one that was only introduced around the turn of the 20th century. Much of […]

Read more

The Truth About Your Flammable Farts

sun-fart

Alex B. asks: Why are farts flammable? Contrary to popular belief, it’s probably not methane leaking from behind that reckless “bros” light on fire (known as pyroflatulence); rather, it’s most likely primarily hydrogen. In a typical, healthy body, human farts are comprised primarily of hydrogen, nitrogen, some carbon dioxide and potentially a small amount of methane and oxygen. These farts […]

Read more

How Did the Practice of Women Jumping Out of Giant Cakes Start?

pie-girl2

Diane F. asks: Who started the tradition of girls jumping out of cakes? Almost everyone has seen depicted the bizarre bachelor party tradition of a scantily-clad woman jumping out of a giant cake. It turns up most often in decades-old films, TV shows, and comics, but it still persists today at lavish Vegas shindigs—though the cakes are now usually made […]

Read more
1 2 3 4 5 6 25