Iowa State University; Agricultural and Biosystems Engineering Dept.; Engineering models; Sand; Soils
Dr. Clarence Bockhop experiments with grading sand in the soil bin using scale model implements and similitude principles to study soil-tool interaction.
Iowa State University; Agricultural and Biosystems Engineering Dept.; Drainage; Trenches; Engineering models
Agricultural engineers Kent Mitchell (left) and Gerald Hollander work out the relationship between the depth of trench and height if target on a tile drainage model.
H. Frederick Hollenbeck and Frances Hiltrop working with models of complex crystals. In addition to a large model in the foreground there are models shelved behind them.
Aircraft models; Aerodynamics; Airplanes--Design and construction--History; Airplanes--Wings, Triangular; Delta wing airplane; World War, 1939-1945--Science--Germany
Aircraft models; Aerodynamics; Airplanes--Design and construction--History; Airplanes--Wings, Triangular; Delta wing airplane; World War, 1939-1945--Science--Germany
Aeronautics--History; Aircraft models; Airplanes--Design and construction--History; Airplanes--Wings, Triangular; Delta wing airplane; World War, 1939-1945--Science--Germany
