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The Rolleiflex SLX, 6000 System, and Hy6 cameras are medium format and digital single-lens reflex cameras manufactured and marketed by Rollei starting from 1976, when the Rolleiflex SLX was released. Photographic lenses for these cameras share the same mechanical lens mount interface, but differences in camera body features and controls mean ...
Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.
Banshee Jet 80 on display in 2017. A single jet engine version with 40 kg of thrust was developed and entered service in 2010, later named the Banshee Jet 40. [10] It was improved into the Banshee Jet 40+, which is still marketed in 2024.
The design battery energy density is 1300 Wh/kg (present) or 2000 Wh/kg (projected). The cost of battery system chosen to evaluate is US$ 30/kW (present) or US$ 29/kW (projected). Al/air EVs life-cycle analysis was conducted and compared to lead/acid and nickel metal hydride (NiMH) EVs.
Confluence Outdoor (formerly known as Confluence Watersports) is an American manufacturer of kayaks, canoes, and related accessories. The company comprises seven separate brands which each specialize in paddling sport boats or accessories.
RCA radio controlled car. Dayton, Ohio, 1921. In 1904, Spanish engineer Leonardo Torres Quevedo was developing a radio-based control system he named Telekino.He chose to conduct an initial test in the form of a three-wheeled land vehicle (), which had an effective range of 20 to 30 meters, the first known example of an unmanned ground vehicle.
RQ-20A Puma Military designation for the Puma All Environment variant. Enhanced Puma Upgrade of the RQ-20A Puma AE with more powerful propulsion system and new batteries that increase endurance by 75 percent to 3.5 hours, auxiliary payload bay to integrate payloads while keeping the video camera, precision navigation system with secondary GPS, and a redesigned durable fuselage with reinforced ...
Batteries are used on spacecraft as a means of power storage. Primary batteries contain all their usable energy when assembled and can only be discharged. Secondary batteries can be recharged from some other energy source, such as solar panels or radioisotope-based power (), and can deliver power during periods when the space vehicle is out of direct sunlight.