PPT-An Answer to Fermi’s Paradox

In the Prevalence of Ocean Worlds Alan SternSwRI Water Ocean Worlds WOWs Once Thought Rare Water Ocean Worlds WOWs Once Thought Rare No Longer Water Ocean Worlds WOWs WOWs are common . DPF 2015 – University of Michigan, Ann Arbor. . Alejandro Lopez . in collaboration with: C. Savage, D. Spolyar and D. Adams. Outline:. Brief Introduction. Goal. Technique. Results. Conclusion. Future Work. (Fermi acceleration at shock: most standard, nice powerlaw, few free parameters). main . signatures to . be determined: . E. min . , . E. max. [. Ã. timescale . t. acc. (E. ) ], . spectral slope . Jami . Durkee. Valerie . Toothman. Jason . Prindell. What is it?. Russell's paradox (also known as Russell's antinomy) was discovered by Bertrand . Russel. . in 1901. It showed that the naïve set theory created by Georg Cantor (which states any definable collection is a set) leads to a contradiction.. Phylogenetics. Ziheng. Yang , Mol. Biol. . Evol. . 2007. Presented by Caroline . Uhler. and Anna-. Sapfo. . Malaspinas. Outline. What is the star-tree paradox?. Simulations. Explanation: the fair-coin paradox.. Start with a piece of A4 paper.. A4 – it’s just a piece of paper…. Pick up a vertex and fold across, lining up the edges so that the crease goes through a vertex.. A4 – it’s just a piece of paper…. in Tunnel Junctions. Jin Zhang. , Y. Sherkunov, N. d’Ambrumenil, B. Muzykantskii. University of Warwick, U.K.. APS March Meeting, Portland, 17. th. , March, 2010. Fermi-Edge Singularity. Sudden change . An . OXYMORON. . is a . combination of . contradictory. words. that are . stuck together. in a . way that actually . seems to . make sense.. open secret. act naturally. found missing. deafening silence. Who is This Fermi and Why Does He Ask Questions?. . . Fermi questions receive their name from Enrico Fermi (1901-1954). He was an Italian physicist known for his participation in the Los Alamos atomic bomb project (code named the “Manhattan Project”) during World War II. Fermi is best known for his contributions to nuclear physics and the development of quantum theory. In addition to his contribution to theory, he is also noted as an experimentalist.. Fermi National Accelerator Lab December 13, 2017 . How we usually think of him. Or perhaps . l. ike . t. his . How I think of him. There’s a story behind that orange line on the right of the image…... Fermi LAT Overview Fermi Solar Workshop August 2012 The Large Area Telescope The LAT is a particle physics detector we’ve shot into space We analyze individual events (one photon at a time) with high energy physics techniques to get photon sample DPF 2015 – University of Michigan, Ann Arbor. . Alejandro Lopez . in collaboration with: C. Savage, D. Spolyar and D. Adams. Outline:. Brief Introduction. Goal. Technique. Results. Conclusion. Future Work. FROM THE REVIEWS: ?Webb offers coherent, understandable, and sometimes humorous coverage of a diverse range of topics. He provides readers with non-trivial insights into research fields they may not have encountered previously . . . I think everyone who has ever considered the possibility that other intelligent civilizations exist elsewhere within our galaxy will enjoy Where Is Everybody? They will find much to agree with, and much to argue about, in this very accessible volume.? ?SCIENCE During a Los Alamos lunchtime conversation that took place more than 50 years ago, four world-class scientists agreed, given the size and age of the Universe, that advanced extraterrestrial civilizations simply had to exist. The sheer numbers demanded it. But one of the four, the renowned physicist and back-of-the-envelope calculator Enrico Fermi, asked the telling question: If the extraterrestrial life proposition is true, he wondered, Where IS everybody? In this lively and thought-provoking book, Stephen Webb presents a detailed discussion of the 50 most cogent and intriguing answers to Fermi\'s famous question, divided into three distinct groups: - Aliens are already here among us. Here are answers ranging from Leo Szilard\'s suggestion that they are already here, and we know them as Hungarians, to the theorists who claim that aliens built Stonehenge and the Easter Island statues. - Aliens exist, but have not yet communicated. The theories in this camp range widely, from those who believe we simply don\'t have the technologies to receive their signals, to those who believe the enormities of space and time work against communication, to those who believe they\'re hiding from us. - Aliens do not exist. Here are the doubters\' arguments, from the Rare Earth theory to the author\'s own closely argued and cogently stated skepticism. The proposed solutions run the gamut from the crackpot to the highly serious, but all deserve our consideration. The varieties of arguments -- from first-rate scientists, philosophers and historians, and science fiction authors -- turn out to be astonishing, entertaining, and vigorous intellectual exercises for any reader interested in science and the sheer pleasure of speculative thinking. Stephen Webb is a physicist working at the Open University in England and the author of Measuring the Universe. FROM THE REVIEWS: ¿Webb offers coherent, understandable, and sometimes humorous coverage of a diverse range of topics. He provides readers with non-trivial insights into research fields they may not have encountered previously . . . I think everyone who has ever considered the possibility that other intelligent civilizations exist elsewhere within our galaxy will enjoy Where Is Everybody? They will find much to agree with, and much to argue about, in this very accessible volume.¿ ¿SCIENCE During a Los Alamos lunchtime conversation that took place more than 50 years ago, four world-class scientists agreed, given the size and age of the Universe, that advanced extraterrestrial civilizations simply had to exist. The sheer numbers demanded it. But one of the four, the renowned physicist and back-of-the-envelope calculator Enrico Fermi, asked the telling question: If the extraterrestrial life proposition is true, he wondered, Where IS everybody? In this lively and thought-provoking book, Stephen Webb presents a detailed discussion of the 50 most cogent and intriguing answers to Fermi\'s famous question, divided into three distinct groups: - Aliens are already here among us. Here are answers ranging from Leo Szilard\'s suggestion that they are already here, and we know them as Hungarians, to the theorists who claim that aliens built Stonehenge and the Easter Island statues. - Aliens exist, but have not yet communicated. The theories in this camp range widely, from those who believe we simply don\'t have the technologies to receive their signals, to those who believe the enormities of space and time work against communication, to those who believe they\'re hiding from us. - Aliens do not exist. Here are the doubters\' arguments, from the Rare Earth theory to the author\'s own closely argued and cogently stated skepticism. The proposed solutions run the gamut from the crackpot to the highly serious, but all deserve our consideration. The varieties of arguments -- from first-rate scientists, philosophers and historians, and science fiction authors -- turn out to be astonishing, entertaining, and vigorous intellectual exercises for any reader interested in science and the sheer pleasure of speculative thinking. Stephen Webb is a physicist working at the Open University in England and the author of Measuring the Universe. indistinguishability of the electrons. ,. electron wave nature. ,. the Pauli exclusion principle. .. (4.6). The function . f. (E). called . the . Fermi-Dirac distribution function. gives the probability that an available energy .