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Lischka reacted to Filip Larsen's post in the thread Pocket Mechanical Calculator with Like.

For another great example of a somewhat more mechanical complicated, but also more powerful calculator take a look at the Curta:

Aug 22, 2026
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Lischka reacted to Hornbein's post in the thread Pocket Mechanical Calculator with Like.

Designed in the 1880's, popular in the 1920's through 60's. Subtraction by turning it over to get a different display on the other...

Aug 22, 2026
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Lischka reacted to Hornbein's post in the thread Backyard Trebuchet Breaks Sound Barrier with Like.

Carbon fiber, 3D printed parts, multiple rotations. Numerous small refinements of the design to get to a 776 mph release. Your castle...

Aug 15, 2026
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Lischka reacted to .Scott's post in the thread Cloaking a drone with Like.

In an article from Northwestern University, engineers have designed a blurry drone and built a prototype. The photo below is a...

Aug 1, 2026

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