Ideas change everything
WATCH
TED Talks
Browse the library of TED talks and speakers
Playlists
100+ collections of TED Talks, for curious minds
TED Series
Go deeper into fascinating topics with original video series from TED
TED-Ed videos
Watch, share and create lessons with TED-Ed
TEDx Talks
Talks from independently organized local events
DISCOVER
Topics
Explore TED offerings by topic
Podcasts
Explore the TED Audio Collective
Ideas Blog
Our daily coverage of the world of ideas
Newsletters
Inspiration delivered straight to your inbox
TED Games
Innovative games that challenge you to think differently
ATTEND
Conferences
Take part in our events: TED, TEDGlobal and more
TEDx Events
Find and attend local, independently organized events
TED on Screen
Experience TED from home
TED Courses
Learn from TED speakers who expand on their world-changing ideas
PARTICIPATE
Nominate
Recommend speakers, TED Prize recipients, Fellows and more
Organize a local TEDx Event
Rules and resources to help you plan a local TEDx event
TED-Ed
Award-winning educational content and programs
Translate
Bring TED to the non-English speaking world
TED Fellows
Join or support innovators from around the globe
ABOUT
Our Organization
Our mission, history, team, and more
Conferences
TED Conferences, past, present, and future
Programs & Initiatives
Details about TED's world-changing initiatives
Partner with TED
Learn how you can partner with us
TED Blog
Updates from TED and highlights from our global community
SIGN IN
MEMBERSHIP
Type to search
TED is supported by ads and partners
00:00
From Our Partners
Learn more
无穷无尽的圆周率 - Reynaldo Lopes
1,740,477 plays
|
Reynaldo Lopes |
TED-Ed
• July 2013
Share
Save
Like
Read transcript
观看完整课程： http://ed.ted.com/lessons/the-infinite-life-of-pi-reynaldo-lopes 圆周长和直径的比值是恒定的：3.14159...无穷无尽（真的！）圆周率π是一个无理数，它有无限多个数位，所以无论我们的估值多接近，都无法计算出它的精确值。雷纳多·洛佩兹解释了圆周率π广泛的应用范围，包括音乐研究、财务模型，甚至是宇宙密度的计算。 课程教授：Reynaldo Lopes 动画制作：Igor Coric
math
TED-Ed
animation
TED is supported by ads and partners
Talk details
观看完整课程： http://ed.ted.com/lessons/the-infinite-life-of-pi-reynaldo-lopes 圆周长和直径的比值是恒定的：3.14159...无穷无尽（真的！）圆周率π是一个无理数，它有无限多个数位，所以无论我们的估值多接近，都无法计算出它的精确值。雷纳多·洛佩兹解释了圆周率π广泛的应用范围，包括音乐研究、财务模型，甚至是宇宙密度的计算。 课程教授：Reynaldo Lopes 动画制作：Igor Coric
math
TED-Ed
animation
This video was produced by TED-Ed, TED’s youth and education initiative.
Read more about TED-Ed.
Meet the educator
Reynaldo Lopes
Educator
About TED-Ed
TED-Ed Original lessons feature the words and ideas of educators brought to life by professional animators.
Learn more about TED-Ed
This video was produced by TED-Ed, TED’s youth and education initiative.
Read more about TED-Ed.
