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  1. username

    retroflectors

    It's been a couple years since I've needed one, but if memory serves correctly, retroreflectors won't flip an image around when you look at it (unlike a conventional mirror). They are kind of difficult to make so they cost a lot of money.. the more you spend, the better the reflection will be...
  2. username

    Invar 36 Fatigue Strength

    I just posted this thread at another forum but was thinking this one might be good for this too.. I'm a Mech. Eng. working on Optical systems. We are using Invar in a couple of our systems and would like to figure out lifetime expectancy. Does anyone know anything about the fatigue strength...
  3. username

    Invar 36 Fatigue Strength

    Hello.. I'm new to this site (first time poster). I'm a Mech. Eng. working on Optical systems. We are using Invar in a couple of our systems and would like to figure out lifetime expectancy. Does anyone know anything about the fatigue strength of Invar or any related data? Thanks! Jay
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