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  2. Hopper - Wikipedia

    en.wikipedia.org/wiki/Hopper

    Hopper, a prototype test vehicle for the SpaceX Starship; Hopper balloon, a kind of ultralight hot air balloon; Hopper barge, a kind of barge; Hopper car, a type of railway freight car; Gravity wagon, or slant wagon, a type of wagon that is essentially a hopper; used in agriculture; Space hopper, a toy: a ball with handles for bouncing on

  3. Retort stand - Wikipedia

    en.wikipedia.org/wiki/Retort_stand

    Retort stand. In chemistry, a retort stand, also called a clamp stand, [1] a ring stand, [2] or a support stand, [3] is a piece of scientific equipment intended to support other pieces of equipment and glassware — for instance, burettes, test tubes and flasks. [4] The typical ring stand consists of a heavy base and a vertical rod, both ...

  4. The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

  5. Hopper (particulate collection container) - Wikipedia

    en.wikipedia.org/wiki/Hopper_(particulate...

    A wooden hopper for grain, on a millstone. Materials can be added either manually or automatically to the top of a hopper. For dust collection, it enters the hopper from a collection device. For example, baghouses are shaken or blown with compressed air to release caked-on dust from the bag. Precipitators use a rapping system to release the dirt.

  6. Vertical launching system - Wikipedia

    en.wikipedia.org/wiki/Vertical_launching_system

    A vertical launching system (VLS) is an advanced system for holding and firing missiles on mobile naval platforms, such as surface ships and submarines. Each vertical launch system consists of a number of cells, which can hold one or more missiles ready for firing. Typically, each cell can hold a number of different types of missiles, allowing ...

  7. VTVL - Wikipedia

    en.wikipedia.org/wiki/VTVL

    Apollo 16 LM Orion on the lunar surface, 1972 DC-XA landing in 1996 A Falcon 9 first stage performing a vertical landing, 2016. Vertical takeoff, vertical landing (VTVL) is a form of takeoff and landing for rockets. Multiple VTVL craft have flown. A notable VTVL vehicle was the Apollo Lunar Module which delivered the first humans to the Moon.

  8. VTOL - Wikipedia

    en.wikipedia.org/wiki/VTOL

    A vertical take-off and landing (VTOL) aircraft is one that can take off and land vertically without relying on a runway. This classification can include a variety of types of aircraft including helicopters as well as thrust-vectoring fixed-wing aircraft and other hybrid aircraft with powered rotors such as cyclogyros/cyclocopters and gyrodynes .

  9. Handstand push-up - Wikipedia

    en.wikipedia.org/wiki/Handstand_push-up

    The body is vertical in a handstand. The handstand push-up (press-up) - also called the vertical push-up (press-up) or the inverted push-up (press-up), also called "commandos" - is a type of push-up exercise where the body is positioned in a handstand. For a true handstand, the exercise is performed free-standing, held in the air.