I haven't delved deep enough into the channel to recommend the entirety on the whole, but both of these videos are worth your while.
The first is an in-depth look about how the most basic of fuel feed systems, the carburetor, works, complete with high speed photography.
One interesting note - the throttle plastic starts to flex under the force of the gas flow. At first it's thought it may be the plastic breaking down due to contact with the gasoline (in my childhood I'd made the mistake of pouring gasoline into a styrofoam cup, some plastics don't last long or hold up in contact with gasoline), but they later decided it was the heat from the lights.
High speed photography requires ridiculous amounts of lighting, which of course means heat.
This can pose interesting challenges. The camera used here was digital, but things get even more interesting when film is involved. As I recall, the ending FX shot of the house collapsing near the end of Poltergeist was filmed by constructing a model and sucking it into a large vacuum line while filming it at high speed. It was a complicated dance of turning on the lights in time to light the scene, but not soon enough to melt the model and glue, with a camera running film through so fast they couldn't afford to simply stop it or it would melt into the mechanism.
The next video is from a series he did on nuclear subs, and how they generate air. It's legit - I'm shocked at how much they let him film even with the XO and others hanging around.