So I'm working on an article about the imapact resistance of ophthalmic lens materials. The two main lens materials used are those of a hard resin called CR-39 and the other is polycarbonate. I have been looking for something that describes the difference in their ability to withstand certain...
The basic test was fairly easy. I had the advantage of being in the industry for many years before hand. The advanced test is the real bear though! Once I get past that I write my research paper and I get to be an Certified Master Optician. Woo Hoo! Don't know what good it will do me but what...
Study Tips! Help!
So I have two weeks left 'till I take an advanced certification test for my job! I need to cram big time. It's been years since I've been in school (even there I didn't really study) so my study skills have declined over the years. What tips and tricks do you use? Thanks!:biggrin:
Hello I am looking for a good book that will give me an introduction to chemistry. I work in the optical field (glasses, contacts etc.) and work with plastic monomers and polymers and would like to know a little more about them and why the react to certain conditions the way that they do. Any...
I was doing some reading on lens aberrations and saw some referance to 1st and 3rd order aberrations. What are they and what is the differance? Are there and 2nd order aberrations?
Oh so a wave will turn back on itself and cancel it out, But how does the film increase light transmition? And this might be a stupid question but what happens to the wave when it is put out of phase? Does it disapear?
Now how exactly do they cancel on another out? Do the photon colide making them dissapear? As for the increased light transmition do how does that happen?
What happens when light encounters a thin film or anti-reflective coating? I know that a/r coatings are based on the principle of constructive and destructive interference. So do some photons turn on each other an cancel each other out and do others team up to increase light transmition? If some...