The Swiss mathematician Johann Lambert verified this around 250 years back by reflecting that Pi can not be expressed precisely as the proportion of one number to an additional – in various other words, the an ‘irrational’ number that goes top top forever, never repeating itself. While we regularly use rational values for Pi favor 22/7, this are only approximations to its true value, and constantly repeat after ~ a certain variety of decimal places.

You are watching: Why does pi go on forever


salary by direct Debit and also get 3 issues for £5*Receive every issue delivered direct to your door with cost-free UK shipment

Special market

Get 3 problems for £5 once you subscribe to BBC Science focus Magazine


BBC Science focus Special version

Discover our latest unique editions spanning a selection of fascinating topics native the recent scientific discoveries to the large ideas explained.


Science focus Podcast

Listen to some of the brightest name in scientific research and an innovation talk around the ideas and breakthroughs shaping ours world.


gain our everyday LUNCHTIME GENIUS newsletter

Our day-to-day newsletter arrives simply in time for lunch, supplying up the day"s biggest science news, our recent features, exceptional Q&As and insightful interviews. Add to a cost-free mini-magazine for you to download and keep.

By click “sign up” you room agreeing come our terms and also conditions and also privacy policy. You can unsubscribe at any type of time. For much more information around how to perform this, and also how instant Media Company minimal (publisher of science Focus) stop your personal information, please see our privacy policy.


See more: 2000 Chevy Blazer Fuel Pressure Regulator On A 99 Chevy Blazer 4

This website is released by prompt Media Company minimal under licence indigenous BBC Studios Distribution. © instant Media firm Ltd 2021.