00944nam a2200217Ia 4500 CTU_222086 210402s9999 xx 000 0 und d 681.4 H225 Hammond, John H. The camera obscura : A Chronicle John H. Hammond Bristol Hilger 1981 Contents: The camera obscura effect - the formation of an image by light passing through a small hole into a darkened room or box - has been known for many centuries. It was probably first noted by Chinese philosophers, and the instrument was later developed by European astronomers for observing sunspots and planetary movements, as well as by magicians and showmen as an entertaining diversion Camera,Máy chụp ảnh History,Lịch sử Tuyến Trung tâm Học liệu Trường Đại học Cần Thơ