السبت, 26.05.18
 

How do whales sing? - Stephanie Sardelis

343381 وجهات النظر - 10 نوفمبر، 2016

View full lesson: http://ed.ted.com/lessons/how-do-whales-sing-st...

Communicating underwater is challenging. Light and odors don’t travel well, but sound moves about four times faster in water than in air — which means marine mammals often use sounds to communicate. The most famous of these underwater vocalizations is undoubtedly the whale song. Stephanie Sardelis decodes the evocative melodies composed by the world’s largest mammals.
أظهر المزيد

فيديوهات منتشرة المزيد من الفيديوهات

1:28

The Sims 4 Seasons: Official Reveal Trailer

841155 وجهات النظر - 1 يوم مضى

10:27

Buying Used Things 2

2447801 وجهات النظر - 2 يومان مضى

8:26

Snoop Dogg Weighs In On Kanye's Controversial Comments, Friendship With Martha Stewart | The View

316695 وجهات النظر - 2 يومان مضى

9:27

Anne Hathaway Rewatches Her First Commercial

540697 وجهات النظر - 1 يوم مضى

ألعاب مشهورة المزيد من الالعاب