[newman8r]

https://grapeejapan.com/66162

Theirs probably isn't silent, but you certainly could figure out how to make this very quiet and gentle sounding, building tension in a spring between strokes with some kind of silent linear actuator

[eth0up]

This is intriguing and I assume the mechanical and balance (force distribution) have been addressed with strange, extremely light but strong materials. I think it's the parent comment, but someone mentioned Dyson fans, criticizing them as junk. I haven't owned one due to cost, but have been impressed with air/noise ratio.

I once knew a rogue architect who rode a bicycle, wore broken glasses mended with tape and lived in a home in south Florida (warm humid summers). He had dug trenches beneath his house, which he explained were for air circulation intended to work in harmony with interior modifications which I can't remember.

Unfortunately the city condemned and demolished his house. But I've been intrigued by solid state cooling methods since. The Japanese fan, though of questionable mechanical efficiency, ispires me as an example of easily overlooked but formidable design. Neat!

[newman8r]

> which he explained were for air circulation intended to work in harmony with interior modifications which I can't remember.

That's intriguing. Along those lines, I've also been interested in the idea of using pressure sensors and anemomenters to automatically open/close different windows in my house to create optimal airflow. Unfortunately the house I'm in is 100 years old, so for now it's just a daydream.