Recent content by kweba

  1. K

    What is the blackbody problem and the ultraviolet catastrophe?

    Point taken, thanks. But where can we find reliable sources? I checked out the Wikipedia page, and it led me to an "offical" article by Physics world: http://physicsworld.com/cws/article/print/2000/dec/01/max-planck-the-reluctant-revolutionary , which is the same article Shyan posted above as...
  2. K

    What is the blackbody problem and the ultraviolet catastrophe?

    Or maybe is it because Planck himself was not even sure what his suggestion of quantum energy had meant? Because he "really did not give it much thought" except to bring a positive result, and that he didn't see his work at the time as representing any kind of threat to classical mechanics...
  3. K

    What is the blackbody problem and the ultraviolet catastrophe?

    Okay, I think I just found the answer to my own question from this website/blog: http://www.daviddarling.info/encyclopedia/Q/quantum_theory_origins.html As it turned out, Max Planck was really "into" the concept of Entropy and the 2nd law of Thermodynamics, and the Time's arrow (the...
  4. K

    What is the blackbody problem and the ultraviolet catastrophe?

    Thank you very much! This is a great article! Happened to also come across this at their website: http://physicsworld.com/cws/article/print/2000/dec/01/max-planck-the-reluctant-revolutionary Why was he called the "reluctant revolutionary?", just to be sure?
  5. K

    What is the blackbody problem and the ultraviolet catastrophe?

    I knew I was being inaccurate somehow and was missing something, thank you! So the blackbody problem/UV catastrophe had nothing to do with Planck and the development of "quanta"? But still, my question remains, what was the motivation of Planck behind introducing the concept of "quanta"...
  6. K

    What is the blackbody problem and the ultraviolet catastrophe?

    Hello! I'm trying to research about the history and development of Quantum theory, especially with regards to Max Planck's energy quanta. I don't understand what was the problem in classical physics that required Planck to formulate quantum theory/energy quanta, which seemed to have...
  7. K

    Weight of a fluid when I put my finger in it

    I'm interested and would love to conduct this experiment! I just don't have the equipment and resources to do it. :( Maybe next time.
  8. K

    Why planets in the solar system lie almost in a plane

    Hahaha oh right, I forgot that analogy is a less-than accurate picture of GR! Yes I admit I was thinking about the ball-trampoline analogy! They show too much of that on documentaries, which I always watch, so it's stuck in my mind. Sorry! I always picture that the Earth, or any massive...
  9. K

    Importance of differential geometry in physics?

    Apparently: http://en.wikipedia.org/wiki/Carl_Friedrich_Gauss#Middle_years_.281799.E2.80.931830.29 Riemann, in turn, pioneered and develop his own branch of differential geometry, Riemannian Geometry, which is the key specific mathematics from Differential Geometry used in GR. To quote...
  10. K

    Curvature of Spacetime on Earth

    I had the same question posted on the SR/GR forum before, "Why we fall, according to GR?", and a lot of people had explained, just like you said above, it's because of time and its curvature. And I still don't fully understand it. It helps for me when I can picture things, but with this, it's...
  11. K

    Why planets in the solar system lie almost in a plane

    I think I'm wrong about this, but in GR, are not all the planets lie on different (lower and upper) regions of the "gravitational well" of the sun's spacetime curvature? I might be mistaken so I apologize, but can anybody clear this up?
  12. K

    How to calculate/find the volume of drinking bottles and product containers?

    Volume Integral. I knew it has something to do with Calculus/Analysis! Although I'm not still familiar with such mathematics. So I don't really unserstand how would that method go. And then adjust the bottle's size/scale/shape, enough to fit the 250ml? Sorry if I don't make sense.
  13. K

    Importance of differential geometry in physics?

    0Hate to be technical but they aren't necessarily the shortest paths. They extremize but don't necessarily minimize. Oh thank you for correcting me, and clearing it out! Which are Lagrangian mechanics and Hamiltonian mechanics, right? Oh cool it says that in Wikipedia: To quote the Wiki page...
  14. K

    Importance of differential geometry in physics?

    Ohh really? I didn't know that. I thought Riemann developed his models just for pure mathematical pursuits? Was it for real-world applications? And his works were primarily based from the earlier works of Gauss, right? (Wikipedia says that Riemann studied under Gauss, with Gauss being his...
  15. K

    Importance of differential geometry in physics?

    Like DiracPool said, Differential Geometry is the key mathematics in Einstein's General theory of Relativity. It is used to derive Einstein's field equations to describe the curvature of Spacetime in the presence of a body of mass and energy. This curvature of Spacetime results to the...
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