Search results for “cirrus”

What Causes the Halo Phenomenon?

When ice crystals at high altitudes in cirrus clouds refract sunlight, a halo appears. But a classic halo is only visible when the light exits at an angle of 22 degrees. Autor: ZDF/Terra Xpress/Autorenkombinat/Birthe Heer/Sebastian Kerz/Tobias Schönke/Maximilian Heß Translation and dubbing: alugha

How did clouds get their names? - Richard Hamblyn

View full lesson: http://ed.ted.com/lessons/how-did-clouds-get-their-names-richard-hamblyn The study of clouds has always been a daydreamer’s science, aptly founded by a thoughtful young man whose favorite activity was staring out of the window at the sky. Richard Hamblyn tells the history of Luke