Glass Definition and 658 Threads

  1. M

    What is the Official Definition of Glass?

    Ive heard some arguments for and against glass being a liquid. But what is it officially?
  2. C

    Optics - find thickness of glass

    I don't even know where to start with this question! Two coherent sources are traveling as shown below. Find the minimum thickness of the glass (n=1.51) for the waves to be out of phase at the screen
  3. C

    Exploring Time Dilation in Glass: The Effect of Light Speed on Time Perception

    probably a stupid question, but that's what I'm there for... if light travels slower through glass than through air or vacuum, would time be going slower for me if i were sitting in a block of glass?? thanks. cucumber.
  4. S

    NASA research propels development of new glass.

    New Glass. There's a new glass in town. The glass, developed with the help of a unique NASA levitator facility, is available for numerous commercial applications including lasers and optical communications. "We have patented a family of new glasses and have established processes for making...
  5. K

    Can You Explain Why a Cork Won't Float in the Center of a Glass of Water?

    Why is it that when you put a cork in a glass of water, it won't float in the center? ~Kathleen
  6. G

    Does anyone know why glass is transparent?

    Does anyone know why glass is transparent?
  7. K

    Glass is a solid material with an amorphous internal structure.

    "glass" is a solid material with an amorphous internal structure. http://science.nasa.gov/headlines/y2003/14apr_zeroglass.htm So does it imply that if I have 1kg egg shell, and I heat it to 2000 F and cool it immediately before the atoms arrange themselves regularly again, then I can...
  8. B

    When you hold a certain piece of glass up to the light

    When you hold a certain piece of glass up to the light... Hi, My question is thus: When you hold a certain piece of glass up to the light, the light coming through it appears blue. But when you shine light on it, it has a yellow color. What's going on?
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