I was thrilled to hear the announcement that gravity waves had been detected by scientists at the LIGO telescope in Washington.

When I lived in Spokane, Washington I was active with the Spokane Astronomical Society where I made a number of presentations about several exotic theories.

Among these was the presentation I gave on INTERFEROMETRY which preceded a field trip by members of the youth group I had been tutoring.  At the time of our visit in 2003, LIGO was still in its first engineering runs and only had hopes of what was discovered in September 2015.

Among the tools I used to teach the students was a laser interferometer I built using a laser pointer.