Abstract: The recently introduced Mismatched Luneburg Lenses are studied with an in-depth analysis regarding their frequency dependence. This article proposes an analytical expression of the ray paths ...

These types of waves are called longitudinal waves. In the diagram above the rope moves up and down but the energy is transferred along the rope from left to right, at 90° to the oscillation.

These groups were selected not by traditional X-ray or optical search methods, but rather by an association, either physical or along the line of sight, with a strong gravitational lens. We calculate ...

This book is the first of its kind devoted to the key role played by light and electromagnetic radiation in the universe. Readers are introduced to philosophical hypotheses such as the economy, ...

Mirrors at other angles behave similarly, but the ray diagrams may get more complex. The inside corner of a corner reflector (where the three mirrors meet) sends light back parallel to its original ...