Telescope Resolution vs. Aperture and Wavelength
19:42
Why is this Space Telescope so Tiny?
22:40
How a Lens creates an Image.
14:40
How James Webb Orbits "Nothing"
20:34
How big is a visible photon?
14:48
The Big Misconception About Electricity
21:19
Light & Coherence part 2: Spatial Coherence (and the Double Slit Experiment)
21:18
Camera Mirror Lenses Part 1: Visual and Interferometric Testing
27:27