Sitting at a wobbly table? Fix it with math


We've all been there: you're at a restaurant, sitting down for a nice dinner, and the table wobbles back and forth, interrupting your dinner or spilling your water glass.
It turns out that mathematicians have considered this problem, and figured out a solution. What you do is slowly rotate the table a quarter turn, and at some point during that turn, the table must reach a stable position:
Of course there are some qualifiers here: it only works for a table that has four legs in a flat plane — not for one with a single central post, or one with one leg significantly shorter than the others. But for regular old tables, it's a neat trick for keeping impressing your friends, and keeping your dinner in place.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Ryan Cooper is a national correspondent at TheWeek.com. His work has appeared in the Washington Monthly, The New Republic, and the Washington Post.
-
How generative AI is changing the way we write and speak
In The Spotlight ChatGPT and other large language model tools are quietly influencing which words we use
-
How long can Nato keep Donald Trump happy?
Today's Big Question Military alliance pulls out all the stops to woo US president on his peacemaker victory lap
-
Easy Money: the Charles Ponzi Story – an 'enlightening' podcast
The Week Recommends Apple Original podcast explores the 'fascinating' tale of the man who gave the investment scam its name
-
Nobody seems surprised Wagner's Prigozhin died under suspicious circumstances
Speed Read
-
Western mountain climbers allegedly left Pakistani porter to die on K2
Speed Read
-
'Circular saw blades' divide controversial Rio Grande buoys installed by Texas governor
Speed Read
-
Los Angeles city workers stage 1-day walkout over labor conditions
Speed Read
-
Mega Millions jackpot climbs to an estimated $1.55 billion
Speed Read
-
Bangladesh dealing with worst dengue fever outbreak on record
Speed Read
-
Glacial outburst flooding in Juneau destroys homes
Speed Read
-
Scotland seeking 'monster hunters' to search for fabled Loch Ness creature
Speed Read