Vacuum chamber vs giant gummi-marshmallow

Youtube has democratized the practice of using expensive industrial and scientific apparatus to torment inanimate objects, giving us all a peek into the world of the lucky few who happen to have a hydraulic press gathering dust; but if you thing compressing things is fun, wait until you've seen recreational decompression in action; as with this giant gummi-bear-shaped marshmallow, being subjected to hard vac in the name of science-adjacent fun. — Read the rest

507 Mechanical Movements, with animations


507 Movements brings to life Henry T Brown's 1868 treatise "Five Hundred and Seven Mechanical Movements, Embracing
All Those Which Are Most Important in Dynamics, Hydraulics, Hydrostatics, Pneumatics, Steam Engines, Mill and Other Gearing, Presses, Horology, and Miscellaneous Machinery; and Including
Many Movements Never Before Published
and
Several Which Have Only Recently Come Into Use," and includes selected animations of the mechanisms. — Read the rest

Tallest possible Lego tower height calculated


The good folks on the most-excellent BBC Radio/Open University statistical literacy programme More or Less decided to answer a year-old Reddit argument about how many Lego bricks can be vertically stacked before the bottom one collapses.

They got the OU's Dr Ian Johnston to stress-test a 2X2 Lego in a hydraulic testing machine, increasing the pressure to some 4,000 Newtons, at which point the brick basically melted. — Read the rest

Exciting boring video

This video from Herrenknecht AG shows the operation of the enormous tunnel boring machine that will conduct the deep tunnelling for San Francisco's new subway lines. The machine obviates the necessity of tearing up city streets for subway construction, and somehow manages to be gentle enough to avoid shaking the buildings above it. — Read the rest

3D printed exploratory spiders


Fraunhofer's 3D printed exploration spiders are intended for use "as an exploratory tool in environments that are too hazardous for humans, or too difficult to get to." They use hydraulic bellows to execute advanced maneuvers, including jumping:

With its long extremities, the spider has a range of ways to get around.

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