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If you think the answer to this question (known as Olbers' paradox) is obvious, think again.
Short and simple answer from a NASA astrophysicist.
A short film explaining Olbers' paradox and its most probable solution.
A blog all about bizarre fermi estimations e.g. how many characters you would type if you fell asleep on your keyboard or how many people it would take to hold back a whale
An educational site with good details of the particle physics experiments conducted in the Fermi Laboratory. Much is accessible to a wide range of abilities, older students will gain most but all ...
On line exhibition of auditory (sound) illusions including the Shepard Scale, Tritone Paradox and Risset Scale.
The circulation of the vector field V around any simple closed path S is defined as the integral of the tangential component of V around that path (in the "right-handed" direction).
This video animation explores how a person travelling close to the speed of light on board a rocket ages slower than their twin thanks to the relativity and time dilation.
The Case Files tell stories from the history of science, including Nikola Tesla, Orville Wright, Albert Einstein, Edwin Hubble, Marie Curie, Max Planck, Enrico Fermi and many more.
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