ID 285718405 © Zhan1999 | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
manfred von ardenne dresden developing research manufacturing industrial vacuum coating films glass thinfilm photovoltaics german mechanical engineering company institute electron beam ion scientific science evaporation microscopy gdr soviet germany saxony europe european observatory star observation astronomy physics july 2023: old focused use beams technical purposes purposes