Shapes Definition and 164 Threads

A shape or figure is the form of an object or its external boundary, outline, or external surface, as opposed to other properties such as color, texture, or material type.
A plane shape, two-dimensional shape, or 2D shape (plane figure, two-dimensional figure, or 2D figure) is constrained to lie on a plane, in contrast to solid figures.

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  1. M

    Destructive Interference with Different Wave Shapes

    Here is the question An upright square pulse and an inverted triangular pulse were directed toward each other on a spring, as shown in the illustration. Sketch the appearance of the spring at the instant the two pulses met and completely overlapped. What principle did you use in...
  2. P

    Shape of Potential & Wave Vector 'K': Explained

    shapes of potentials! Hi all.. 1)we have,for example,rectangular, square well, well type etc potentials. How is the shape of a potential is determined? What is the shape of the nucleus potential? 2)I am unable to get the physical importence of the wave vector 'K' and K-space in band...
  3. B

    Calculating Radiation View Factor for Various Shapes

    how is radiation view factor calculated especially for the following cases 1-between a flat surface and a sphere between two flat surfaces at 90 between two surfaces facing each other between two spheres
  4. N

    What are the shapes of molecular orbitals?

    Please, can someone answer my question? I know the shape of sp hybrid orbital, but want to know about the others ( sp2,sp3,dsp2,dsp3,d2sp3,d3sp3 ). And are there any other type of molecular orbitals?
  5. S

    Caliabau-Yau Shapes: What Everyone Knows About These Multidimensional Knots

    What does everyone know about these multidimensional knots?
  6. B

    How can I find the length of a bisected shape with trigonometry?

    http://img62.imageshack.us/my.php?image=geometry9cn.png
  7. J

    Why do clouds form into definite cohesive shapes?

    perhaps an elementary question for such a bunch of wizards, but here goes - why do clouds form into definite cohesive shapes? since the static charges of the mixed vapor molecules are all negative (to the point where they eventually will build up enormous negative density and discharge as...
  8. N

    Shapes of structural diagrams-help

    What would be the shapes of these molecules? I drew them out but I couldn't still figure out the exact shape names a. SeO_{3} b. HClO_{2} c. NO_{2}^{-} d.ClF_{5}
  9. W

    Lewis Structure + Molecular shapes

    3. Which of the following is the molecular shape of the ion, ICl4-? A. Tetrahedral B. See saw C. Square planar D. Square pyramidal E. Trigonal pyramidal I drew the lewis structure, 4 chlorines bound to an Iodine. Iodine has 7, Each clorine has 7 with 35 total, the bonds...
  10. P

    Molecular Shapes: Why Is IF5 Square Pyramidal?

    Hi, Can anyone explain to me why IF5 is square pyrimidal and not trigonal bipyrimidal?
  11. B

    Determining Orbital Shapes from Schrodinger's Equation

    Just how was it determined from electron wavefunctions calculated by schrodingers equation? For example, if i take the 1S and 2P wavefunctions ( ground state wavefunction against distance from nucleus) http://www.shef.ac.uk/chemistry/orbitron/AOs/1s/wave-fn.html...
  12. R

    Can All String Shapes Be Derived from a Figure 8 Configuration?

    brane and string shapes ? Hello, I am an uneducated savage so please bear with me and respond in laymans terms if possible so essentially I have 2 questions I was wondering if all variations of string shapes could be made from sections of a figure 8 shaped string which co incidentally or not...
  13. D

    Molecular Shapes: What Does CO3^-2 Look Like?

    what does a CO(subscript3)^-2 look like? (as in the drawing and the shape of the molecule?
  14. S

    Questions about molecular forces and shapes

    Hi I wonder if you could help me with the following multiple choice questions: [1] Which of the following does not have a dipole moment a) H20 b)NH3 c)CO2 D)SF4 E)BRCL5 Are we just suppose to know that the answer is CO2 or is there some simple way of working it out...
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