File for PrepSchool 2017. Lecture 27 July 2017

The history of our world in 18 minutes | David Christian

เผยแพร่เมื่อ 11 เม.ย. 2011
http://www.ted.com Backed by stunning illustrations, David Christian narrates a complete history of the universe, from the Big Bang to the Internet, in a riveting 18 minutes. This is "Big History": an enlightening, wide-angle look at complexity, life and humanity, set against our slim share of the cosmic timeline.

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Hans Rosling: Global population growth, box by box

ผยแพร่เมื่อ 9 ก.ค. 2010
http://www.ted.com The world's population will grow to 9 billion over the next 50 years -- and only by raising the living standards of the poorest can we check population growth. This is the paradoxical answer that Hans Rosling unveils at TED@Cannes using colorful new data display technology (you'll see).

How simple ideas lead to scientific discoveries

เผยแพร่เมื่อ 13 มี.ค. 2012
Adam Savage walks through two spectacular examples of profound scientific discoveries that came from simple, creative methods anyone could have followed -- Eratosthenes' calculation of the Earth's circumference around 200 BC and Hippolyte Fizeau's measurement of the speed of light in 1849.