Microscopy: General view- Early Microscope with various attachments. Original public domain image from Flickr https://www.rawpixel.com/image/8782635/photo-image-camera-glass-gunFree Image from public domain licenseThe Royal Observatory, Paris: the terrace on the garden side, with men experimenting with astronomical and other scientific… https://www.rawpixel.com/image/13966523/image-cartoon-person-artFree Image from public domain licenseScientists at Oklahoma State University, Stillwater, Oklahoma, are testing windmill resembling a bicycle wheel for the U.S.… https://www.rawpixel.com/image/3322748/free-photo-image-antenna-cc0-creative-commonsFree Image from public domain licenseAn Early Telescope. A man is looking through a telescope, the parts of which are lettered for further identification and… https://www.rawpixel.com/image/8786608/image-moon-person-natureFree Image from public domain license