Surfaces Definition and 459 Threads

  1. B

    How Can We Accurately Characterize Rough Surfaces in Epitaxial Systems?

    Does anybody know any neat measurements one can do to characterise a surface? I'm thinking generally of rough surfaces such as the ones you come across in epitaxial systems. In other words: If I have two ensembles of surfaces, what is the best method to use to determine whether the same...
  2. W

    Understanding Nodal Surfaces: How Many are There in an Orbital?

    Hey just need a quick clarification here. I am reading conflicting arguments. One argument states that to find the nodal surfaces of an orbital you take the result of n-1 the other argument states that the number of nodal surfaces of an orbital is equal to n. Can someone please clear this...
  3. W

    Parametric Surfaces and Their Areas

    [SOLVED] Parametric Surfaces and Their Areas Hello, I am having problems visualizing a concept. First I will post my question as it is given in Jame's Stewart's Fourth Edition Multivariable Calculus text, Chapter 17, section 6, question 17. Find a parametric representation for the given...
  4. A

    Does the human eye have limitations on detecting black surfaces?

    black surfaces apparently absorbs all light, that's why it appears black, but does it ever reflect light off its surface? what if its a polished black suface..we could actually see our own reflection on these surfaces.. so is there light being reflected at all? is there any difference from the...
  5. P

    How Does Changing a Gaussian Surface's Shape Affect Net Flux?

    A positive test charge is placed at the center of a spherical Gaussian surface. What happens to the net flux through the Gaussian surface when the surface is replaced by a cube of the same volume whose center is at the same point? or When the sphere is replaced by a cube of one third the volume...
  6. Y

    Type(s) of charge distribution for spherical and cylindrical gaussian surfaces

    I have a new question: "In applying Gauss's Law describe the types(s) of charge distribution for which (a) a spherical gaussian surface is useful and (b) a cylindrical gaussian surface is useful" please help!
  7. M

    Path integrals and the sum of surfaces, is this general?

    I'm wondering if it is true that any surface can be equated to a weighted sum of a basis of surfaces differring only by genus? I think this is asking whether the path integral formulation for strings is more general. Thanks.
  8. W

    Is a Permanently Sterile Surface Possible with Chemical Coating Technology?

    I am in a materials science class and need to come up with a course project. One thing that interested me was in an article that I read in the paper a while back. It was about the development of some kind of coating that could be applied to surface that could render it permanently sterile. I...
  9. D

    How Are Surface Curvatures Derived from Implicit and Parametric Forms?

    I am trying to learn a little bit more about geometry of surfaces and some differential geometry concepts like principal, gaussian an mean curvatures. I have found some interesting material at mathworld.wolfram.com but as usual there is a quantity of little incorrect details. Is anybody...
Back
Top