A Brief History Of Time : Discussion Page

[Veronika]

Because scientists never belonged to the group of ritchest people, even though they gave serious ritches to the world, I dont think that writing a book for finantial reasons is a bad thing. On the contrary! As of me, it is money well spend!

[Veronika]

How is the reading going? I just finished chapter 8. Glad I recaped chapter 4&5 with you guys. It made comprehension of following chapters much easier.

[Starman, Moderator]

we are about to finish chapter 8 atleast I am

[Starman, Moderator]

and yes I too had to read the chapter 5 twice and thanks to the group , i am going quite well

[Alok, Group founder]

Guys ..i think , we are doing a very nice job .. We are reading it at an amazing rate and understanding it too ......

[Vivek]

Alok wrote: "Vivek wrote: "this book was written purely to tide over the financial crunch in which hawing found himself. For every equation, he was told, the sales would be cut by half. The amazing part is how ..."
not only did I read it multiple times, i even had it recorded on those casettes which dont work. But I am increasaingly of the opinion that a healthy counter dote to cosmological theorites is needed by us - the reverse of the coin, so to speak and have reads a sample of Bankrupting physics how today;s top scientists are gambling away their credibility by alexander unzicker and sheilla (yes there is an extra l- for lack of love?) jones.
i have recorded "farewell reality" which is over a gb and might not be mailable, but brings out the weaknesses in the standard models and the near psycotic fascinations of the scientists' with its "elegance " and now the big question- How much of brief history is/was
really comprehensible?

[Ven]

Hi everyone i have one maybe a silly question , i want to know , the writer says that even in empty space there are always particles and antiparticles producing and annihilating each other , and vanishing , is this a real thing thats happening and observed or is it just an assumption to fit into the equations to explain the event horizon of a Black Hole ?

[Vivek]

Alok wrote: "In the second chapter , Mr Hawking Speaks a little about Poincare , If you know about the Great Millennium Problems , Poincare Conjecture is one among the 7 Millennium Problems .............Millenn..."
there is a BBC horizon 50 minute or so on Fermat;s Last Theorem (see one link below)which was finally solved In answer to a Quora question on how to prove that someone is a time traveller from 3000 i suggested he provide all the proofs to the seven problems provoking a response "why do u assume everyone is a brilliant mathematician!" now how naive is that!
http://www.dailymotion.com/video/x223gx8

[Vivek]

Ven wrote: "Hi everyone i have one maybe a silly question , i want to know , the writer says that even in empty space there are always particles and antiparticles producing and annihilating each other , and va..."
i believe that that is what happens in the LHC only the(proofs/evidence or trace take ur pick for/of) the existence of the fleeting particles created may be controversial
As to where the tremendous energies required come from i hesitantly suggest maybe they postulate dark energy or the energy of the vacuum but would like comments

[Arko]

Hey Ven , it is a fact that empty space is characterised by virtual particles getting generated provided they get annihilated in a very short span of time. It has been shown by the Casimir effect and Lamb shift ( Hans Bethe 's explanation in 1947). So it is not just a mathematical trick but a fact of Nature. This sudden existence of particles is an outcome of Heisenberg's uncertainity principle leading to violation of conservation of energy which is allowed if happens within a time span known as Planck Time beyond which such effect can never occur and satisfies our sacrosanct conservation of energy law. It's like taking loan from a bank and returning within a time allotted by the bank thus the bank won't keep records of the loan. However the effect after taking loan of energy by the particles from the Cosmic vacuum energy bank can be studied and have been studied by Casimir. Look into his work and you may get the details. Hawking's genius was to explore the effect of these particles near event horizon. Even great physicist Zel'dovich and his team came up with the radiation from rotating black holes before Hawking but their explanation of the radiation ( similar to superradiance ) was not as convincing as Hawking's.

Browse further for more papers and literature in this line... cheers !

[Vivek]

Arko wrote: "Hi Veronika,
Weak force is that force which is responsible for radioactivity. Like the strong and electromagnetic forces, it is also found to be mediated by two types of bosons namely W (+/-) & Z. ..."

Arko wrote: "Hi Veronika,
Weak force is that force which is responsible for radioactivity. Like the strong and electromagnetic forces, it is also found to be mediated by two types of bosons namely W (+/-) & Z. ..."
surely u have come across the expression- perhaps the book title as well- "THE particle ZOO"? welll how many more inmates are yet to gain entry ? but to offer an answer about inputs
try Quora answer to the question what is QCD? though whatever spin is it makes ordy heads like mine spin

[Ven]

Thank you Arko ...And Thanks for the suggestion...

[Arko]

You are welcome Ven

[Starman, Moderator]

Hello people i am almost completed , And these last two Chapters are very very interesting , Loved it No wonder he sold Millions of Copies , This Book is a Masterpiece

[Alok, Group founder]

Hi everyone , i completed reading this book and it has been great , especially reading along with all of you guys , that was twice the fun.....i loved the way How Mr.Hawking gives a Brief History of Galileo , Sir Newton and Albert Einstein , leaves us with full of enthusiasm and inspiration in the end ........What about you all ?

[Starman, Moderator]

I am done and it's been a pleasure reading this book

[Veronika]

I finished couple days ago as well. Fun reading with you guys. And thank you for boog suggestions. My next Amazon order will be big!