Ce a fost înainte de Big Bang?: o istorie întreagă a universului

Ce a fost nainte de Big Bang o istorie ntreag a universului Cel mai ambi ios proiect tiin ific al vremurilor noastre este probabil ncercarea de a uni mecanica cuantic teoria valabil la scara microcosmosului cu relativitatea general teoria care i v de te impo

  • Title: Ce a fost înainte de Big Bang?: o istorie întreagă a universului
  • Author: Martin Bojowald Vlad Zografi
  • ISBN: 9789735048594
  • Page: 328
  • Format: Paperback
  • Cel mai ambi ios proiect tiin ific al vremurilor noastre este, probabil, ncercarea de a uni mecanica cuantic teoria valabil la scara microcosmosului cu relativitatea general teoria care i v de te importan a la scara cosmosului dou domenii ale cunoa terii ce par s se afle pe pozi ii ireconciliabile O prim tentativ de unificare e dat de teoria corzilor, prCel mai ambi ios proiect tiin ific al vremurilor noastre este, probabil, ncercarea de a uni mecanica cuantic teoria valabil la scara microcosmosului cu relativitatea general teoria care i v de te importan a la scara cosmosului dou domenii ale cunoa terii ce par s se afle pe pozi ii ireconciliabile O prim tentativ de unificare e dat de teoria corzilor, prezentat pe larg n Universul elegant de Brian Greene, carte ap rut n seria de tiin a Editurii Humanitas Exist ns i o teorie complementar , gravita ia cuantic cu bucle, care porne te de la ideea c spa iul i timpul nu sunt divizibile la infinit.Martin Bojowald este unul dintre pionierii acestei noi direc ii de cercetare i e ini iatorul cosmologiei cuantice cu bucle aplicarea teoriei la cosmos n ansamblul lui Concluzia sa mp rt it de mul i fizicieni este c , naintea universului pe care l vedem ast zi n expansiune, a existat un alt univers, care s a contractat ntrebarea tulbur toare la care r spunde Bojowald n cartea de fa este ce putem afla despre precedentul univers.

    One thought on “Ce a fost înainte de Big Bang?: o istorie întreagă a universului”

    1. The first third of the book is a condensed and meager survey of physics up to the standard model. Sigh.I'm not sure where the author is going with this, but he labels String Theory as "monotheistic" and Loop Quantum Gravity as "pantheistic" yuck.The random digressions into science fiction are jarring and confusing.They butt against the scientific arguments in a way that can only be inferred as intentionally deceiving!One chapter argues that entropy cannot be used to define the arrow of time.You [...]

    2. Exciting telling of interesting solution for reconciling very big with the very small, but the science of loop quantum gravity still needs flushing out before it can claim the crown, and since I've read this book I've seen very little growth in this area, but I can say the same for Suzy.

    3. Having finished the book I am surprised that it has a low rating. It is a good review of the state of current physics. To me it is one of the only books that gets to the bottom of the difference between String Theory and Loop Quantum Gravity without going into the mathematics. I don't think a book could go much further than this in reviewing physics without recourse to mathematics. You have to be somewhat on his wavelength (no pun intended) to read this book with much joy or understanding. It is [...]

    4. When does the universe continue? When is at the end of the universe? When is at the beginning of the universe? Where is at the end of the universe? What is any black holes? What is dark matter and dark energy? The book answers these questions.

    5. a physics prof describes the theory of loop quantum gravity, an alternative to string theory apparently, which proposes a contracting universe prior to the big bang and purportedly solves a problem faced by quantum mechanics + general relativity in explaining a "singularity".As he acknowledges, there is currently no way of testing loop quantum gravity against observations, which lessened my enthusiasm for attempting to figure it out. Enthusiastic or no, my 10th grade physics from 35 years ago wa [...]

    6. Es una gran obra que nos actualiza de una manera amena la situación actual dentro de las teorías en física en camino hacia una teoría del todo o unificada. El autor muestra su gran cosecha en el campo de la física pero también nos muestra una capacidad de exposición apta para un público no muy inmerso en estos temas, además de los elementos de filosofía, teoría del conocimineto, epistemología y religión que han enriquecido la visión cr´ticia que tiene sobre el trabajo teórico rea [...]

    7. wow!Somewhere i read about that the whole mathematik get changed byhim and his work???HmmSo i inscribied 2009 to the Astronomie Institut at the University in Vienna and read the book :dThe stuff at University was nearly the same, so i got the answer to my questionabout the the integral from Bojowald :dIt is verry good written. Also all stuff is clearlyunderstandable and you can figer it out, what the book is about and :d how to manage to live withsuch tiny things.

    8. Difficult book to get through. The two pieces I found important were the explanations regarding why electrons don't fall into the nucleii. (Hula hoop effect of electron wave function which due to repulsion does not allow it.) And also the reason for discrete electron shells, relating to wave length and interference which only allows for increases by quanta.

    9. Theoretical Physics intrigues everyone but nobody really knows anything about it. In the same vein as "The Elegant Universe" by Greene, Bojowald does a good job of introducing the laymen to a very new, and very advanced topic. You like String Theory? You like being the center of attention at cocktail parties? Learn about Loop Quantum Gravity and impress the guests.

    10. I think it was a little above my head all in all. My favorite parts were when he went on little tangents about something in pop culture (or really nerd culture) that tied into his basic topic, such as explaining scientific issues with star trek technology.

    11. This might be an interesting book, but you have to have a more thorough knowledge of physics. So, by rating as I did, I am not dismissing the book, but rather badly my lack of insight for missing out so much of what could possibly be a really great book.

    12. The intro to this book indicates it's written for the common man. I would submit, not so. Complex read and at times brutal.

    13. Difficile ma interessante. Spesso mi sono un po' perso nelle spiegazioni più complesse ma ho comunque imparato cose nuove come la. quantizzazione dello spazio tempo!

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