Fireworks are a great way to study persistence of vision. And if you don’t get motion sick, try watching through diffraction grating glasses. You can actually see the atomic/molecular lines of of the stuff used to make the fireworks!
I just looked over my podcast stats (a self hating act if there ever was one). My numbers have been slowly creeping up about 10 readers per week since I went daily at the beginning of May. It is sad, but it is encouraging. I see growth. It’s just slow. If you guys could plug […]
Do not try to navigate by the stars while walking some place that moles live. Locate the direction. Locate the mole hole(s). Only walk after doing both.