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Supersonic Projectile Exceeds Engineers Dreams: The Supersonic Trebuchet:
The trebuchet is a type of catapult that was popular for use as a siege engine before gunpowder became a thing. Trebuchets use a long arm to throw projectiles farther than traditional catapults. The focus has typically been on increasing throwing distance for the size of the projectile, or vice versa. But of course you're here to read about the other thing that trebuchets can be used for: speed.
How fast is fast? How about a whip-cracking, sonic-booming speed in excess of 450 meters [~1480 feet] per second! How'd he do it? Mostly wood and rubber [bands] with some metal bits thrown in for safety's sake. [David]'s video explains in full all of the engineering that went into his trebuchet, and it's a lot less than you'd think. There's a very satisfying montage of full power trebuchet launches that make it audibly clear that the projectile being thrown is going well past the speed of sound, with a report quite similar to that of a small rifle.
Link to 15m45s YouTube video with demo near the end.
(Score: 4, Interesting) by Anonymous Coward on Thursday December 02 2021, @01:55AM (1 child)
The article should really be how awesome it is doing a presentation using LaTeX.
(Score: 2) by richtopia on Thursday December 02 2021, @04:15PM
Cool video. I'm unsure if those LaTeX slides were screenshots pasted into Impress or native; but how he was writing on them I suspect it was cut and paste. Still looked good.
I used LaTeX for my Master's Thesis presentation with Beamer: https://latex-beamer.com/quick-start/ [latex-beamer.com]
Ultimately, it does make some great looking graphics and I really like how it can dynamically generate progress bars on the slides. However, in industry I've found it is so much faster to use a WYSIWYG editor for presentations given their very graphical nature.