Group items tagged

In this documentary, Professor Jim Al-Khalili sets out to uncover one of the great mysteries of science - how does a universe that starts off as dust end up with intelligent life? How does order emerge from disorder? It's a mind bending, counter intuitive and for many people a deeply troubling idea. But Professor Al-Khalili reveals the science behind much of beauty and structure in the natural world and discovers that far from it being magic or an act of God, it is in fact an intrinsic part of the laws of physics. Amazingly, it turns out that the mathematics of chaos can explain how and why the universe creates exquisite order and pattern.

"Time lapse sequences of photographs taken by the crew of expeditions 28 & 29 onboard the International Space Station from August to October, 2011, who to my knowledge shot these pictures at an altitude of around 350 km. " Shooting locations in order of appearance: 1. Aurora Borealis Pass over the United States at Night 2. Aurora Borealis and eastern United States at Night 3. Aurora Australis from Madagascar to southwest of Australia 4. Aurora Australis south of Australia 5. Northwest coast of United States to Central South America at Night 6. Aurora Australis from the Southern to the Northern Pacific Ocean 7. Halfway around the World 8. Night Pass over Central Africa and the Middle East 9. Evening Pass over the Sahara Desert and the Middle East 10. Pass over Canada and Central United States at Night 11. Pass over Southern California to Hudson Bay 12. Islands in the Philippine Sea at Night 13. Pass over Eastern Asia to Philippine Sea and Guam 14. Views of the Mideast at Night 15. Night Pass over Mediterranean Sea 16. Aurora Borealis and the United States at Night 17. Aurora Australis over Indian Ocean 18. Eastern Europe to Southeastern Asia at Night

Single photons are the smallest quantities of light and, despite having no mass, have many properties in common with particles. In fact, physicists often think of photons as particles -- particles that sometimes behave like waves. Physicists sometimes describe all particles as waves -- even those with mass, such as electrons and protons -- in order to better understand certain aspects of their behavior.