The Universe is a strange place

About the Lecture Perhaps the universe is not so much strange as brimming with lovely paradox. The search for such beauty seems to lie at the heart of Frank Wilczek’s work. Twentieth century physics, from Einstein through Wilczek’s own Nobel Prize-winning efforts, involves demonstrating the existence of a topsy-turvy reality: for instance, that such sub-atomic particles as quarks and gluons, which have little or no mass, “orchestrate themselves into not just protons and neutrons but you and me,” according to Wilczek. “How is it possible to construct heavy objects out of objects that weigh nothing?,” he asks. Only by “creating mass out of pure energy.” These particles are essentially “excitations in otherwise empty space.” Says Wilczek: “That suggests something …beautiful and poetic: the masses of particles are not like, or similar to or metaphorically suggested by—they are the tones or frequencies of vibration patterns in dynamical voids.” The theory of quarks and gluons and the strong interaction accounts quantitatively for “the mass of protons, neutrons and ultimately you and me and everything around us.” But physics has not yet squared away all aspects of the universe. Wilzcek says that “in cosmology, we meet our match, and don’t know what’s going on.” This is because scientists can’t account for much of the mass in the cosmos. 70% of this mass is in “dark energy,” which is pushing the universe apart. Wilczek hopes that explanations for the dark stuff will emerge through improving equations, unifying theories of different interactions and extending their symmetries. “Beautifying equations leads not to ugly consequences but beautiful surprises,” he concludes.

About  the  Lecture  Perhaps  universe  is  not  so  much  strange  as  brimming  with  lovely  paradox.  The  search  for  such  beauty  seems  to  lie  at  heart  of  Frank  Wilczek’s  work.  Twentieth  century  physics  from  Einstein  through  own  Nobel  Prize-winning  efforts  involves  demonstrating  existence  topsy-turvy  reality:  instance  that  sub-atomic  particles  quarks  and  gluons  which  have  little  or  no  mass  “orchestrate  themselves  into  just  protons  neutrons  but  you  me  according  Wilczek.  “How  it  possible  construct  heavy  objects  out  weigh  nothing  he  asks.  Only  by  “creating  pure  energy.”  These  are  essentially  “excitations  in  otherwise  empty  space.”  Says  Wilczek:  “That  suggests  something  …beautiful  poetic:  masses  like  similar  metaphorically  suggested  by—they  tones  frequencies  vibration  patterns  dynamical  voids.”  theory  strong  interaction  accounts  quantitatively  “the  ultimately  everything  around  us.”  But  has  yet  squared  away  all  aspects  universe.  Wilzcek  says  “in  cosmology  we  meet  our  match  don’t  know  what’s  going  on.”  This  because  scientists  can’t  account  cosmos.  70  this  “dark  energy  pushing  apart.  Wilczek  hopes  explanations  dark  stuff  will  emerge  improving  equations  unifying  theories  different  interactions  extending  their  symmetries.  “Beautifying  leads  ugly  consequences  beautiful  surprises  concludes. 

Channels: Lectures In Astronomy  Cosmology  Major questions in astronomy 

Added: 718 days ago by deek

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The Library Of Alexandria - Best Of Carl Sagan's Cosmos (7)

The Library Of Alexandria - Best Of Carl Sagan's Cosmos (Part 7). --- Subscribe to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/SagansCosmos • http://www.youtube.com/FFreeThinker --- BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 19) The Mysterious Tonguska Event: http://www.youtube.com/watch?v=irVof7adq4s --- Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history. A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method. http://www.carlsagan.com .

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Ancient Astronomy - Best Of Carl Sagan's Cosmos (17)

Ancient Astronomy - Best Of Carl Sagan's Cosmos (Part 17) --- Subscribe to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/SagansCosmos • http://www.youtube.com/FFreeThinker --- BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 19) The Mysterious Tonguska Event: http://www.youtube.com/watch?v=irVof7adq4s --- Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history. A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method. http://www.carlsagan.com .

Ancient  Astronomy  Best  Carl  Sagan  Sagans  Cosmos  Episode  Scientists  Science  Astronomer  Astrophysics  Universe  Education  Educational  SETI  Big  Bang  Space  Galaxies  Solar  System  Planets  Physics  Origin  Human  Evolution  Lecture  Videos  Series  Einstein  Theory  Relativity  Time  Dilation  Albert  Black  Holes  Dark  Matter  Energy  Milky  Way  Galaxy  Atoms  Quarks  Speed  Light  Gravity  Hawking 

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Added: 827 days ago by deek

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Triumph Of Modern Science Over Medieval Superstition

Johannes Kepler And The Triumph Of Modern Science Over Medieval Superstition - Best Of Carl Sagan's Cosmos (Part 18). Subscribe to Science & Reason: • http://www.youtube.com/SagansCosmos • http://www.youtube.com/Best0fScience • http://www.youtube.com/FFreeThinker BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 19) The Mysterious Tonguska Event: coming soon Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history. A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method. • http://www.carlsagan.com Johannes Kepler (1571-1630) was a German mathematician, astronomer and astrologer, and key figure in the 17th century scientific revolution. He is best known for his eponymous laws of planetary motion, codified by later astronomers based on his works "Astronomia nova", "Harmonices Mundi", and "Epitome of Copernican Astrononomy". They also provided one of the foundations for Isaac Newton's theory of universal gravitation. During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, an assistant to astronomer Tycho Brahe, the court mathematician to Emperor Rudolf II, a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. He also did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and helped to legitimize the telescopic discoveries of his contemporary Galileo Galilei. Kepler lived in an era when there was no clear distinction between astronomy and astrology, but there was a strong division between astronomy (a branch of mathematics within the liberal arts) and physics (a branch of natural philosophy). • http://en.wikipedia.org/wiki/Johannes_Kepler .

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Added: 827 days ago by deek

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How we calculate the age of the earth

Earth: How scientists can calculate the age of the earth

Earth:  How  scientists  can  calculate  the  age  of  earth 

Channels: The Astronomers  Planetary science 

Added: 1185 days ago by Astro

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