Books

 

 

Day 1 - Daily Diary Blog  

A Short History of Nearly Everything - Bill Bryson I - Lost in the Cosmos 1. How To Build A Universe Inflation Theory - Fraction of moment after the dawn of creation, the U underwent a dramatic expansion. It inflated, doubling the size every 10(-34) seconds. According to Guth's theory, at 1/10 trillionth trillionth trillionth of a second gravity emerged. After another ludicrous time, it was joined by electromagnetism and other forces such as strong and weak nuclear forces. These were joined an instant later by elementary particles. Suddenly there were swarms of photons, protons, electrons and neutrons. Many experts believe that there have been many many big bangs, perhaps trillions and trillions of them, spread through the mighty span of eternity and that we exist in this particular one is that this is one we could exist in. For a long time Big Bang had one gaping hole - not one particle of the heavy stuff so vital to our being - C, O2, N2 etc. emerged from the gaseous brew

A Brief History of Time - Stephen Hawking 1. Our Picture of the Universe Aristotle was the first to say that earth was round rather than flat, based on two observations- a. In an Eclipses the shadow of earth was round. b. North Star appeared lower in the sky when viewed in the South, than in the north. Nicholas Copernicus first prosed the idea that Sun was stationary and Earth is revolving around it. Edwin Hubble made the observation that wherever you look, distant galaxies are moving away from each other. In other words universe is expanding. Today scientists describe the universe in terms of two basis partial theories - the general theory of relativity and quantum mechanics. Unfortunately these theories are found to be inconsistent with each other, the major search is to find one theory that will combine both - quantum theory of Gravity 2. Space and Time Both Aristotle and Newton believed in absolute time. Michelson-Morley experiment: The  result  was negative