What I mean is that if I put a block of this "magic glass" onto the tip a flashlight I would not see any light unless I look through the glass at just the right angle. For example, it seems like a material composed of many microscopic aligned optical fibers might behave like this. However, I also feel like this might count as passively colliminating light "too easily" in the sense that laws about entropy etc. make it impossible. Thanks for any help!
3
-
$\begingroup$ would this be what you are looking for en.wikipedia.org/wiki/Isolator_(microwave) ? $\endgroup$– hyportnexCommented Feb 21, 2021 at 17:54
-
$\begingroup$ From what I can tell this device permits transmittion in one direction along a certain axis, but blocks it in the other direction. I am looking for a material which has a certain axis through which light can travel (in both direction). An example would be quite simply a tube. But I am looking for someting more homogeneous, a material with a tubular microstructure that makes it transparent when looking "throgh the tubes", but opaque when not. $\endgroup$– Robert WegnerCommented Feb 21, 2021 at 19:06
-
1$\begingroup$ How about macroscopically aligned toilet paper tubes? $\endgroup$– Criticizing Israel not allowedCommented Mar 2, 2021 at 16:04
Add a comment
|