#Steve-Mould #video on counterflow heat exchangers; he built a tube-in-tube one using a clear outer hose and a copper inner pipe with a spiral of copper wire around it as a spacer. Mentions counterflow washing used in mining, which is a sort of semi-batch process with a series of washing tanks, which I hadn’t heard of before, with solids being progressively moved to cleaner and cleaner tanks in the cascade.
on 02026-08-27#Steve-Mould #video on hand-drawn #holograms #toread
on 02026-08-11#Steve-Mould #video #toread on optimizing spinning Euler discs
on 02026-08-11Another #Steve-Mould #video about #Gelsight #microscopy, which uses raking light from many angles inside a transparent gel pad to scan the surface topography of small objects in 3-D.
on 02026-08-11#Steve-Mould #video on Lippmann-plate spectrographically correct color #photography using #iridescence or #structural-color, like the guaninne in the iridophores of a chameleon. #color
on 02026-05-15#Steve-Mould #video on #supercritical CO₂ #materials
on 02025-11-21#Steve-Mould #video on a new kind of bone drill #hardware that avoids cutting skin and can literally cut the shell off a raw egg while leaving the membrane underneath intact.
on 02025-11-10#Steve-Mould #video of #spiral-phyllotaxis #optical-illusions with #stroboscopes with the brand name "Novatropes"
on 02025-09-13#Steve-Mould #video on Doebereiner’s catalytic lamp, governing the emission of hydrogen from sulfuric acid on zinc with negative feedback, then catalytically burning the hydrogen on hydrogen sponge.
on 02025-06-17#Steve-Mould #video #toread on #illusions
on 02024-09-15#Steve-Mould #video on #Braess’s paradox
on 02024-09-10#Steve-Mould #video on what I thought was scanning probe #microscopy but is actually deforming a gel and illuminating its opaque surface with a ring of six lights in front of a camera using the "photometric stereo technique" to measure things to ±4μm #precision.
on 02024-08-26#video by #Steve-Mould on water-powered timers that oscillate using trapped air, a somewhat more complex design than the geyser pump. Super confusing, I don’t understand it. #mechanisms
on 02024-07-31#SteveMould applies a cast saw to his skin #video Apparently new casts use a water-activated synthetic resin? But can still be cut by the same cast saws.
on 02024-04-04#Steve-Mould on the “portal illusion” with helices #video
on 02024-04-03