Eighty years ago today, Enrico Fermi and his colleagues conducted a physics experiment that changed the world. Chicago Pile 1 led to the first nuclear chain reaction and the world of carbon-free nuclear energy. | Argonne National Laboratory

672K views · 6.6K reactions |  Głośny i nagradzany film "Polański,...

Force-onForce training - TAGinn tools | Airsoft Pyrotechnics

5.4K views · 58 reactions | "Dominus" mortar aiming and correction test #2 - Long distance. The "Dominus" mortar forward observer's point of view. This footage shows the importance of fine correction of fire. 260 meters distance not even allowing you to hear the moment of the shot, so you may just hope that the person who corrects the fire knows what to do... | Airsoft Pyrotechnics | Facebook