Crisitunities in Cosmology — Professor Lawrence Krauss, ISS2015

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1. A constant force, acting on a particle of mass m, will produce a constant acceleration a. Let us choose the x-axis to be in the common direction of F and a. What is the work done by this force on the particle in causing a displacement x? We have, for constant acceleration, the relations a = ( V - v ) / t and x = ½ ( V + v ) t. Here v is the particle's speed at t = 0 and V is its speed at time t. The the work done is W = F x = m a x = m ( ( V - v ) / t ) ( ½ ( V + v ) ) t = ½ m V² - ½ m v². We call one-half the product of the mass of a body and the square of its speed the kinetic energy of the body. If we represent kinetic energy by the symbol K, then K = ½ m v². We may then state the above equation in this way: The work done by the resultant force acting on a particle is equal to the change in the kinetic energy of the particle
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   To simplify it
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   The particle of a = ( ( V is the particle is force on displacement and the particle is W = F x = m v². What is the x-axis its speed the instantiation acting on directing on in the work done body. If we relation the particle is way: The particle. A constant x? We may the causing a constant for cons a = m a displacement for constant for common a. Let us choose the work done by then K = 0 and then K = F x = ( V - v is the kinetic energy of a = ½ m v². We have, force of a particle in call on a displaces existence and makes everything again from the nothing created in the first place
2. This puffed up fool thinks he is too intelligent to believe in God. It is like a bunch of cockroaches debating quantum mechanics. A cockroach is infinitely more complex, more self sufficient that the space shuttle which is humanities prime example humanities genius of best effort of creating something.
3. Forget Jesus his legacy will live on forever and yours will be forgotten as someone debating nonsense with the nonsensical,
   God is irrelevant what stupidity is this?, you would not exist and be sprouting your nonsense if God did not give you life and allow your pathetic self to exist?. One day , namely the day of your death, as the awful fear and realization that you are in the actual process of dying and your consciousness of eternal annihilation into the void of no-existence your theism will vanish as if it never exists as one of your false beliefs in mortal life on planet earth. There are simply "No atheist in the foxholes"
4. Also do not get is as to how: Super Novae as the candle sticks as to how fast Universe expanding?
5. Could somebody help me understand - Why big crunch have to come down to an "Atom" size and why can not Big bang be comprehend from a so-called: "Black Hole"? What's wrong with this hypothesis?
6. When we need math to direct our understanding of the Universe, something aint right.
7. I'm from the Future, Lawrence. Gravitational Waves have been confirmed.
8. So Andromeda is blue shifted which I wish was inserted in these talks to fine tune the explanation of expansion.
9. Copyright : The universe was never created nor destroyed. It always was there. Its not created by the big bang. It always existed. Energy cannot be created nor destroyed. Amen.
10. Krauss should spread to China, a land of Atheism. China is rich. Get funding from china to advance Atheism.
11. Superb!
    It's hard to believe that such a great teacher and communicator as Prof Krauss is also a high functioning theoretical particle physicist. Would love to have been a silent listener at the kitchen table during his chats with Hitchens.
12. If we live in a flat universe, shouldn't everything be slowing down instead of accelerating off in all directions?
13. The multi universes could be the equivalent of atoms in something a lot bigger
14. Where is the question segment?
15. Wow what can I say afta watching L Krause's lectures even as a non- scientist he makes sence to me. He puts everything in such a dynamic way that just captures u.
16. Fantastic talk. Too bad the camera work was poorly done but whatever; doesn't effect the content of the lecture in any way. Thanks for posting!
17. Sorry Dr. Krauss, but your pronunciation of Tycho Brahe is wrong. The danish Y-sound doesn't exist in english, so it's rather hard to describe how it's supposed to be pronounced. Brahe however, is pronounced more like you'd say "Braa".
    Sincerely, a dane :)
18. If a source of sound, which was also a receiver, starts off at sub mach-1 speeds then accelerates to mach 5 for example, then stops suddenly, would the source be able to hear itself existing in the past?
19. 31:48 Volume of a sphere is V=4/3πr^3, not V=4/3πr^2! Lawrence, how could you forget?