In the paper that coined the term “tachyon”, Gerald Feinberg studied Lorentz invariant quantum fields with imaginary mass. Because the group velocity for such a field is superluminal, naively it appears that its excitations propagate faster than light. However, it was quickly understood that the superluminal group velocity does not correspond to the speed of
Fields with imaginary mass Read More »
The appearance of the Milky Way supernova of 1572 belongs among the more important observation events in the history of astronomy. The appearance of the “new star” helped to revise ancient models of the heavens and to speed on a revolution in astronomy that began with the realisation of the need to produce better astrometric
Remnant of SN 1572 as seen in X-ray light Read More »
A Sandbox is a term related to the sandbox you might have played in and built sand castles in as a child. It is a playground for working on concepts and exploring your imagination. A WordPress Sandbox is basically a copy of a generated page on a WordPress site that is saved to your hard drive
Creating a Sandbox Read More »
