ID 961377180925 © Nd2nandalal9 | 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.:
military telescope light rays reflect observation reflection figure element graphic experiment simple angle prism obstacle black periscope optical science physical physics design vector tube vision plane class plain mirror instrument shaped based object chart system eye diagram graph schematic degree principle periscope physics lens vector used land sea warfare