Free Energy Principle — Karl Friston @SeriousScience

Updated September 2026, 2 days ago

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$Radiation and Land Surface — Mathias Disney / Serious Science Geographer Mathias Disney on the Suns spectrum, albedo and why plants and animals are sensitive to a very specific part of the overall spectrum. Read the full text on our website: http://serious-science.org/radiation-and-land-surface-10381 If we consider radiation coming from the Sun to be distributed from about 0.2-0.3 microns (millionths of a metre) to many centimetre wavelengths, that spans orders of magnitude, many orders of magnitude. Our eyes are sensitive to a tiny tiny part of that, from about 0.4 to about 0.7 microns, so its a tiny fraction of this overall spectrum. Mathias Disney, Professor of Geography, University College London Photosynthesis: http://serious-science.org/photosynthesis-9484 El Niño: http://serious-science.org/el-nino-10272 Be the first to find out about our new videos and articles. Learn interesting facts about various topics and people. Discover the answers to the big questions. Be in the know. http://serious-science.org/ Follow us: We are on Patreon: https://www.patreon.com/SeriousScience Facebook — https://www.facebook.com/serious.science.org/ Twitter — https://twitter.com/scienceserious YouTube — https://www.youtube.com/user/SeriousScience Instagram — https://www.instagram.com/serious.science Tumblr — http://serious-science.tumblr.com/ VK — https://vk.com/seriousscience$

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Free Energy Principle — Karl Friston