NASA ion thruster, c. 1965. Full caption: "ION THRUSTER 1.5 METER INSTALLATION AT THE ELECTRIC PROPULSION LABORATORY EPL"
Fullsize image: https://diqn32j8nouaz.cloudfront.net...r_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...n_thruster.jpg
Previously:
https://www.homemadetools.net/forum/...183#post176622
https://www.homemadetools.net/forum/...778#post171020
https://www.homemadetools.net/forum/...232#post165521
https://www.homemadetools.net/forum/...307#post165751
https://www.homemadetools.net/forum/...607#post170442
