妊娠試驗如何工作? – 天阮

Dig into the science of how modern over-the-counter pregnancy tests detect pregnancy with such a high rate of accuracy.

—

Over-the-counter pregnancy tests give potentially life-changing results with a pretty high rate of accuracy. But how do they work? Tien Nguyen explains how each test performs a scientifically rigorous, multi-stage experiment that goes from start to finish in the time that it’ll take you to watch this video.

Lesson by Tien Nguyen, animation by Andrew Foerster.

查看完整課程: http://ed.ted.com/lessons/how-do-pregnancy-tests-work-tien-nguyen