Homework Statement
For a Helicopter landing on an undercarriage system modeled as a single spring damper.
In principle, is it possible to determine K and C values for a single (constant rate) spring damper system given the mass of the helicopter and 2 independent scenarios of initial...
Apparently Opacity can be defined as 'mass attenuation coefficient', which is the sum of scattered and absorbed light, so opacity can be a function of reflectance in effect.
http://en.wikipedia.org/wiki/Opacity_(optics )
Anyway the author of the text in question has clarified the sentence...
Indeed that was my understanding and I would have put the reference from the metrology test down to a misprint if I had not found several references quoting definitions for Opaque as being dependent on lack of reflectance.
Thanks for the reply.
I'm puzzled.
In an authoritative metrology text I read.
"Focus detection instruments cannot be used to measure 'opaque' surfaces"
as they require a finite level of reflected light to function.
Non transmittance being (to my understanding) the key definition of "opaque", I looked up the...