Education

Earth’s mysterious red glow, explained – Zoe Pierrat

Explore the phenomenon and uses of chlorophyll fluorescence, a small amount of light emitted by plants during photosynthesis.

In 2009, a satellite circled Earth, scanning and sorting the wavelengths reflecting off the planet’s surface. Researchers noticed something baffling: an unexpected wavelength of unknown origin. They tried looking at Earth with only this wavelength, and saw the planet covered in a red hue of varying intensity. So, what was going on? Zoe Pierrat explores the science of chlorophyll fluorescence.

Lesson by Zoe Pierrat, directed by Denis Chapon, The Animation Workshop.

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View full lesson: https://ed.ted.com/lessons/earth-s-mysterious-red-glow-explained-zoe-pierrat
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Animator’s website: http://denischapon.com
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