Lesplorazione Delluniverso La Rivoluzione Che Sta Svelando Il Cosmo Book PDF, EPUB Download & Read Online Free

L’esplorazione dell’universo
Author: Priyamvada Natarajan
Publisher: Bollati Boringhieri
ISBN: 8833975142
Pages: 254
Year: 2017-02-02T00:00:00+01:00
View: 615
Read: 538
«Se volete comprendere le grandi idee che stanno modellando la cosmologia contemporanea, dovete leggere questo libro». Adam G. Riess, premio Nobel per la Fisica, 2011 Per millenni l’universo è stato sinonimo della volta stellata che ci sovrasta e noi ne eravamo il centro. Con la modernità si sono sviluppate nuove idee, sono state intraprese molte strade e si è iniziato un cammino di osservazioni e mappature del cosmo, sempre più precise, che ha mutato la nostra comprensione del mondo. Negli ultimi cento anni, poi, un’improvvisa accelerazione delle ricerche scientifiche ha radicalmente trasformato le nostre conoscenze. Ma il cammino per arrivare all’immagine attuale della struttura dell’universo non è stato per nulla lineare, tutt’altro. Gelosie, vicoli ciechi, ambizioni e frustrazioni dei protagonisti di questa avventura hanno costellato il cammino della conoscenza, e se oggi sappiamo infinitamente più cose di quelle che si sapevano anche solo all’inizio del Novecento, certo non possiamo dire di sapere tutto: molto altro ancora ci stupirà in futuro, forse tra breve. In questo libro, scritto da una protagonista assoluta della mappatura del cosmo, possiamo seguire le più importanti e affascinanti scoperte dell’astrofisica contemporanea. L’universo che conosciamo oggi non sta più fermo: è in accelerazione costante, contiene immensi buchi neri – una delle strutture più misteriose che l’uomo abbia mai scoperto –, riverbera di un’eco dell’esplosione che lo originò oltre 13 milardi di anni fa, e forse è solo uno degli infiniti possibili universi. A complicare il quadro vi è la scoperta del fatto che ciò che vediamo rappresenta un misero 4% di tutto cio che c’è, mentre il 96% restante è costituito di materia oscura ed energia oscura, di cui sappiamo pochissimo (e proprio l’autrice di questo libro è una delle protagoniste della mappatura dettagliata di questo nuovo mondo misterioso). Infine, abbiamo scoperto ormai centinaia di esopianeti, Terre orbitanti attorno a Soli lontani che potrebbero un giorno far svanire la nostra convinzione di essere soli nel cosmo. Solo la scienza, con tutta la sua provvisorietà e la sua incompletezza, ha potuto darci un quadro tanto grandioso.
Mapping the Heavens
Author: Priyamvada Natarajan
Publisher: Yale University Press
ISBN: 0300204418
Pages: 267
Year: 2016-04-26
View: 628
Read: 815
For all curious readers, a lively introduction to radical ideas and discoveries that are transforming our knowledge of the universe This book provides a tour of the "greatest hits" of cosmological discoveries--the ideas that reshaped our universe over the past century. The cosmos, once understood as a stagnant place, filled with the ordinary, is now a universe that is expanding at an accelerating pace, propelled by dark energy and structured by dark matter. Priyamvada Natarajan, our guide to these ideas, is someone at the forefront of the research--an astrophysicist who literally creates maps of invisible matter in the universe. She not only explains for a wide audience the science behind these essential ideas but also provides an understanding of how radical scientific theories gain acceptance. The formation and growth of black holes, dark matter halos, the accelerating expansion of the universe, the echo of the big bang, the discovery of exoplanets, and the possibility of other universes--these are some of the puzzling cosmological topics of the early twenty-first century. Natarajan discusses why the acceptance of new ideas about the universe and our place in it has never been linear and always contested even within the scientific community. And she affirms that, shifting and incomplete as science always must be, it offers the best path we have toward making sense of our wondrous, mysterious universe.
The Lost Language of Cranes
Author: David Leavitt
Publisher: Bloomsbury Publishing USA
ISBN: 1620407027
Pages: 320
Year: 2014-06-03
View: 686
Read: 1067
Presents the story of Philip Benjamin, a young man haunted by images of his staid, middle-class parents and frightened by the thought of revealing his homosexual identity to them.
Reality Is Not What It Seems
Author: Carlo Rovelli
Publisher: Penguin
ISBN: 0735213933
Pages: 288
Year: 2018
View: 842
Read: 761
"What are the elementary ingredients of the world? Do time and space exist? And what exactly is reality? In elegant and accessible prose, theoretical physicist Carlo Rovelli leads us on a wondrous journey from Democritus to Einstein, from Michael Faraday to gravitational waves, and from classical physics to his own work in quantum gravity. As he shows us how the idea of reality has evolved over time, Rovelli offers deeper explanations of the theories he introduced so concisely in Seven Brief Lessons on Physics"--page 4 of cover.
The Shapes of Galaxies and Their Dark Halos
Author: Priyamvada Natarajan
Publisher: World Scientific
ISBN: 9814489395
Pages: 276
Year: 2002-03-28
View: 982
Read: 1222
This book constitutes the proceedings of a very topical workshop aimed at understanding the shapes of the baryonic and dark matter components of galaxies. Several groups presented their recent results from observations and numerical N-body simulations. Contents:Intrinsic Shapes of GalaxiesShapes from Lensing StudiesDark Matter Halos from N-Body SimulationsShapes Mapped Using Stellar TracersShapes from HI Studies and Polar RingsShapes from Studies of SatellitesConstraints from X-Ray StudiesShapes from Absorption Studies Readership: Graduate students, researchers and academics in astrophysics, astronomy and cosmology. Keywords:Galaxies;Dark Halos
The Diet Myth
Author: Tim Spector
Publisher: Weidenfeld & Nicolson
ISBN: 029760919X
Pages: 320
Year: 2015-05-14
View: 198
Read: 625
'The Diet Myth is fascinating, and now I'm obsessed with microbes!' Nigella Lawson Why do most diets fail? Why does one person eat a certain meal and gain weight, while another eating the same meal loses pounds? Why, despite all the advice about what to eat, are we all still getting fatter? The answers are much more surprising - and fascinating - than we've been led to believe. The key to health and weight loss lies not in the latest fad diet, nor even in the simple mantra of 'eat less, exercise more', but in the microbes already inside us. Drawing on the latest science and his own pioneering research, Professor Tim Spector demystifies the common misconceptions about fat, calories, vitamins and nutrients. Only by understanding what makes our own personal microbes tick can we overcome the confusion of modern nutrition, and achieve a healthy gut and a healthy body.
The Brothers Ashkenazi
Author: I.J. Singer
Publisher: Other Press, LLC
ISBN: 1590514025
Pages: 427
Year: 2010-10-19
View: 158
Read: 983
In the Polish city of Lodz, the brothers Ashkenazi grew up very differently in talent and in temperament. Max, the firstborn, is fiercely intelligent and conniving, determined to succeed financially by any means necessary. Slower-witted Jacob is strong, handsome, and charming but without great purpose in life. While Max is driven by ambition and greed to be more successful than his brother, Jacob is drawn to easy living and decadence. As waves of industrialism and capitalism flood the city, the brothers and their families are torn apart by the clashing impulses of old piety and new skepticism, traditional ways and burgeoning appetites, and the hatred that grows between faiths, citizens, and classes. Despite all attempts to control their destinies, the brothers are caught up by forces of history, love, and fate, which shape and, ultimately, break them. First published in 1936, The Brothers Ashkenazi quickly became a best seller as a sprawling family saga. Breaking away from the introspective shtetl tales of classic nineteenth-century writers, I. J. Singer brought to Yiddish literature the multilayered plots, large casts of characters, and narrative sweep of the traditional European novel. Walking alongside such masters as Zola, Flaubert, and Tolstoy, I . J. Singer’s premodernist social novel stands as a masterpiece of storytelling.
The Leopard
Author: Giuseppe Tomasi di Lampedusa
Publisher: Pantheon Books
ISBN: 0375714790
Pages: 319
Year: 1960
View: 386
Read: 769
Confronting the social changes sweeping nineteenth-century Italy, including the forces of revolution and democracy, an elderly Sicilian aristocrat arranges a marriage between his daughter and a wealthy merchant. Reprint. 10,000 first printing.
Contact
Author: Carl Sagan
Publisher: Simon and Schuster
ISBN: 150117231X
Pages: 432
Year: 2016-12-20
View: 919
Read: 205
Pulitzer Prize-winning author and astronomer Carl Sagan imagines the greatest adventure of all—the discovery of an advanced civilization in the depths of space. In December of 1999, a multinational team journeys out to the stars, to the most awesome encounter in human history. Who—or what—is out there? In Cosmos, Carl Sagan explained the universe. In Contact, he predicts its future—and our own.