Recent content by sperryrand

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    Polarisation of reflected light

    Hi, I'm interested in the degradation of stereo contrast (i.e. increase in cross-talk) caused by high angles of incidence and reflection. Yes, in some theatres it is circular, but in others linear. Here, I have a linear system. M
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    Polarisation of reflected light

    Hi, Thanks. A few things are unclear to me.. a) How do I use these equations for an opaque material, where there is no transmittance or refraction? (What is the refractive index of an opaque material?) b) These equations seem to tell me the amount of light reflected or transmitted along r - the...
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    Polarisation of reflected light

    Hi, I have a question regarding the projection of polarised light onto a screen, such as commonly used in 3D or VR cinemas. I'm only concerned with linearly polarised light for the moment. I understand that when light undergoes reflection the polarity is altered. I've attached a diagram...
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    Stretched fabric cylinder between two hoops - what is the shape?

    http://www.membranes24.com/theory-form-finding.html?showall=1
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    Stretched fabric cylinder between two hoops - what is the shape?

    Thanks. Catenoid has put me in the right direction.
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    Stretched fabric cylinder between two hoops - what is the shape?

    Hi Everyone, Imagine a tube of fabric stretched between two hoops, like the one's seen here.. http://www.stretchshapes.net/blog/wp-content/uploads/2012/08/A1.png [Broken] That is, a cylinder made of an elastic material, under tension. Is there a name for this shape? Is there a generic...
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