How close to invisible can a mirror be?
October 6, 2017 by Lisa Zyga feature
(Phys.org)—In 2011, mathematicians Alexander Plakhov and Vera Roshchina proved that objects with mirror surfaces cannot be perfectly invisible. Now in a new study, Plakhov has returned to the problem, asking just how close to invisible a mirror-surfaced object can be.
Using concepts from billiards and optics, he has shown that the answer depends on the object's volume and the minimum radius of an imaginary sphere that contains the object. The work is published in a recent issue of the Proceedings of The Royal Society A.
Read more at:
https://phys.org/news/2017-10-invisible-mirror.html#jCp
