EditorialFred Eversley, a sculptor, stands alongside one of his parabolic lenses that is installed on the ground floor of his five-story building in Manhattan’s SoHo neighborhood in New York on Aug. 16, 2022. (Elliott Jerome Brown Jr./The New York Times)
EditorialThe Redwood Forest Institute's Parabolic Glass House, designed and built by Charles Bello, in Mendocino County, Calif., June 2, 2021. (Drew Kelly/The New York Times)
EditorialParabolic bridge. Model by Ermenegildo Menighetti, 1952-1953. Leonardo's drawing (Codex Atlanticus, sheet 855, 1480-90). The science and Technology Museum Leonardo da Vinci. Milan. Italy.
EditorialParabolic bridge. Model by Ermenegildo Menighetti, 1952-1953. Leonardo's drawing (Codex Atlanticus, sheet 855, 1480-90). The science and Technology Museum Leonardo da Vinci. Milan. Italy.
EditorialMedieval war machine. Catapult. Parabolic motion machine, used to launch long-distance projectiles. Engraving. Museo Militar, 1883. Later colouration.
EditorialLinea parabolica, reflex beam, the Lineae Parabolic their focal point, Brenn-Glass, Construction of parabolas, firing glasses, Fig. 140-156, p. 107, Christian Schessler: Demonstrationes mathematicae oder Untersuchung derer mathematischen Warheit- und U...
EditorialCirculation Segment, Parabolic Line, Construction of Circular Segments and Parabolas, Figs. 140-145, p. 107, Christian Schessler: Demonstrationes mathematicae oder Untersuchung derer mathematischen Warheit- und Unwarheiten; allwo von der Arithmetica, G...
EditorialLight for a Lighthouse, so-called Argand lamp, consisting of a lamp holder with oil reservoir and a parabolic mirror, all mounted on a brass bracket. The oil reservoir, placed against the mirror at the back, is an elegantly designed and partially gilde...
EditorialModel of a trunk engine, Model of a Trunk Engine, Model of a 150 hp trunk machine or tubular machine placed in a cross section of a ship. No boiler, the propeller shaft is shortened and provided with a two-blade parabolic propeller, the machine can be ...
EditorialModel of a Two-Blade Parabolic Propeller, Model of a two-blade parabolic propeller in a frame on a floorboard. The pressure surface of the propeller blades is curved in the form of a parabola. The screw probably does not belong in this frame, which can...
EditorialModel of a Two-Blade Parabolic Propeller, Model of a two-blade parabolic propeller in a frame on a floorboard. The pressure surface of the propeller blades is curved in the form of a parabola. The screw can be turned with a crank. The model has a pitch...
EditorialParabolic bridge. Model by Ermenegildo Menighetti, 1952-1953. Leonardo's drawing (Codex Atlanticus, sheet 855, 1480-90). The science and Technology Museum Leonardo da Vinci. Milan. Italy.