Doug DeHaven 
How a Reflecting telescope works!This mirror was used in my Schlerin Effect video!
A Very unique vacuum ‘pump’ Big thanks to my amazing friends who help me acquire these items!
DC moving coil, reflecting galvanometer, type P https://www2.humboldt.edu/scimus/HSTC.27-35/Descriptions/RefGalvB.htm?fbclid=IwAR2IPw7dKlxKN-FBwevDVcroX0LnhvG8B8yaHM-_ogRAwSIHoL0qV_vZTtc
