Over 99.9% of atoms heavier than Helium-4 were formed via nuclear fusion inside stars. Other natural sources include spontaneous fission, big bang nucleosynthesis, cosmic ray spallation, radioactive... continue reading

posted by jwray 1 decade 6 years 7 months 2 weeks ago • 1,970 views

This famous speech was given by Sir Winston just before the battle of Britain.

posted by rasch187 1 decade 6 years 6 months 2 weeks ago • 2,436 views

CERN employees dropping knowledge.

posted by eric3579 1 decade 6 years 4 months 3 weeks ago • 8,052 views • 4:49

Duration 5 mins 47 seconds. The late Robert Anton Wilson has an interesting take on explaining quantum physics. There seem to be a number of his talks spliced together and he speaks eloquently on the... continue reading

posted by Deano 1 decade 6 years 4 months ago • 10,039 views

Stephen Hawking's theory of black holes and Richard Gott's theory of cosmic strings give hope to those seeking a route to time travel. (From YouTube)

posted by Zifnab 1 decade 6 years 3 months 2 weeks ago • 2,337 views

1. The Law of Falling Bodies (1604) Galileo Galilei overturns nearly 2,000 years of Aristotelian belief that heavier bodies fall faster than lighter ones by proving that all bodies fall at the same rate. ... continue reading

posted by Kulpims T'dna (kulpims) 1 decade 6 years 6 months ago • 8,623 views

Neil DeGrasse Tyson shares an important piece of wisdom.

posted by guitarwolf 1 decade 5 years 11 months 3 weeks ago • 8,446 views • 57 secs

Lecture from Princenton Astrophysicist, neil tyson about density, and some of the most dense objects in the universe. From the 'My Favorite Universe' series. Other videos: On being rarefied ... continue reading

posted by mauz15 1 decade 5 years 8 months 3 weeks ago • 1,722 views • 32:32

Leonard Susskind studies theoretical physics, particularly the field of string theory and quantum field theory, and he is widely recognized as one of the fathers of the String Theory model of particle... continue reading

posted by Kulpims T'dna (kulpims) 1 decade 5 years 6 months 2 weeks ago • 2,803 views

Physicist Richard Feynman explains how a train stays on the tracks... From BBC TV 'Fun to Imagine' (1983) -YT

posted by cybrbeast 1 decade 5 years 5 months 4 weeks ago • 17,348 views • 2:27

We've all heard of Schrödinger's Cat, but do you know what it is?

posted by arvana 1 decade 5 years 5 months 2 weeks ago • 19,278 views

Item of interest if you like physics; contains updated nuclear models.

posted by Sagemind 1 decade 5 years 2 months ago • 5,145 views

Aired 11-3-09 on the BBC. Playlist: http://www.youtube.com/view_play_list?p=58211B49FA51CBF3 "Black holes are one of the most destructive forces in the universe, capable of tearing a planet apart... continue reading

Origins Symposium with Brian Greene from Columbia University and Lawrence Krauss from Arizona State University

posted by Kulpims T'dna (kulpims) 1 decade 5 years 3 weeks ago • 2,274 views

Richard Feynman comments on the sloppiness of Social Scientists

posted by Crake 1 decade 6 years 5 months 2 weeks ago • 7,874 views

Nobel Prize-winning philosopher/mathematician, Bertrand Russell, explains why he does not believe in God.

posted by Duckman33 1 decade 4 years 12 months ago • 3,662 views