|
Water Gun
A water gun (or water pistol, water blaster, or squirt gun) is a type of toy gun designed to shoot jets of water. Similar to water balloons, the primary purpose of the toy is to soak another person in a recreational game such as a water fight. Historically, water guns were made of metal and used rubber squeeze bulbs to load and propel water through a nozzle like a Pasteur pipette. While the oldest surviving example of a squirt gun dates to J.W. Wolff's June 30, 1896 patent, depictions of children using water-spraying devices date back to at least the 16th century. In Pieter Bruegel the Elder's painting ''Children's Games'' (1560), a child appears to be using a squirt toy to spray water, suggesting early forms of water guns. The oldest known reference to a squirt gun is dated thirty-five years prior to Wolff’s patent, with General William T. Sherman's 1861 quote regarding the effort to quell secession: "Why, you might as well attempt to put out the flames of a burning hou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant Pressure System
The Constant Pressure System, or CPS, is a powerful design used for certain water guns. CPS water guns are powered by a rubber bladder inflated with water. It was patented by Bruce M. D'Andrade as "bladder water gun". Design All Constant Pressure water guns have a rubber bladder, which is either shaped like a balloon (spherical) or is a length of latex rubber tubing (cylindrical). Water is pumped from the water gun's reservoir and into the rubber bladder, inflating it. Then the trigger is pulled, which opens a valve, allowing the bladder to push the water out of the nozzle. Due to the nature of the bladder, the stream produced is fairly constant, and has almost the same range and power throughout the entire shot, most streams dropping only one foot in range towards the end of a continuous shot, unlike most air pressure based water guns which exhibit a constant loss of pressure while the trigger is pulled. Some bladder water guns, such as Speedloaders, Water Worms, and Super Char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Girls Fight With Water Cannons!
''The'' is a grammatical Article (grammar), article in English language, English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the Most common words in English, most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firearms
A firearm is any type of gun that uses an explosive charge and is designed to be readily carried and operated by an individual. The term is legally defined further in different countries (see legal definitions). The first firearms originated in 10th-century China, when bamboo tubes containing gunpowder and pellet projectiles were mounted on spears to make the portable fire lance, operable by a single person, which was later used effectively as a shock weapon in the siege of De'an in 1132. In the 13th century, fire lance barrels were replaced with metal tubes and transformed into the metal-barreled hand cannon. The technology gradually spread throughout Eurasia during the 14th century. Older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other explosive propellants. Most modern firearms (with the notable exception of smoothbore shotguns) have rifled barrels to impart spin to the projectile for improved flight stability. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peristaltic Pump
A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made. The rotor has a number of "wipers" or "rollers" attached to its external circumference, which compress the flexible tube as they rotate by. The part of the tube under compression is closed, forcing the fluid to move through the tube. Additionally, as the tube opens to its natural state after the rollers pass, more fluid is drawn into the tube. This process is called peristalsis and is used in many biological systems such as the gastrointestinal tract. Typically, there will be two or more rollers compressing the tube, trapping a body of fluid between them. The body of fluid is transported through the tube, toward the pump outlet. Peristaltic pumps may run continuousl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring (device)
A spring is a device consisting of an Elasticity (physics), elastic but largely rigid material (typically metal) bent or molded into a form (especially a coil) that can return into shape after being compressed or extended. Springs can Energy storage, store energy when compressed. In everyday use, the term most often refers to coil springs, but there are many different spring designs. Modern springs are typically manufactured from spring steel. An example of a non-metallic spring is the Bow (weapon), bow, made traditionally of flexible Taxus baccata, yew wood, which when Bow draw, drawn stores energy to propel an arrow. When a conventional spring, without stiffness variability features, is compressed or stretched from its resting position, it exerts an opposing force approximately proportional to its change in length (this approximation breaks down for larger deflections). The ''rate'' or ''spring constant'' of a spring is the change in the force it exerts, divided by the cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spyra GmbH
Spyra is a surname. Notable people with the name include: * Janusz Spyra (born 1958), Polish historian * Wolfram Spyra (born 1964), German composer of ambient music See also * Spira (other) {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super Soaker
Super Soaker is an American brand of recreational water gun that uses manually-pressurized air to shoot water with greater power, range, and accuracy than conventional squirt pistols. The Super Soaker was invented in 1989 by engineer Lonnie Johnson. The prototype combined PVC pipe, acrylic glass, and an empty plastic soda bottle. Originally sold by Larami and now produced by Hasbro under the Nerf brand, Super Soaker has generated more than $1 billion in total sales. The first Super Soaker went on sale in 1990 and was originally called the Power Drencher. Rebranding the name to Super Soaker occurred in 1991 together with a series of TV advertisements that resulted in two million water guns being sold. Super Soakers were popular for many years—so popular, in fact, that the term ''super soaker'' is sometimes used generically, to refer to any type of toy pressurized water gun. History In 1985 Air Force and NASA engineer Lonnie Johnson conceived of the idea of a pressurized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Gun Principle
Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food energy or organic micronutrients. Its chemical formula, , indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, is also called "water" at standard temperature and pressure. Because Earth's environment is relatively close to water's triple point, water exists on Earth as a solid, a liquid, and a gas. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nozzle
A nozzle is a device designed to control the direction or characteristics of a fluid flow (specially to increase velocity) as it exits (or enters) an enclosed chamber or pipe (material), pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them. In a nozzle, the velocity of fluid increases at the expense of its pressure energy. Types Jet A gas jet, fluid jet, or hydro jet is a nozzle intended to eject gas or fluid in a coherent stream into a surrounding medium. Gas jets are commonly found in gas stoves, ovens, or barbecues. Gas jets were commonly used for Gas lighting, light before the development of electric light. Other types of fluid jets are found in carburetors, where smooth calibrated orifices are used to regulate the flow of gasoline, fuel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder (engine), cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering Porting (engine)#Two-stroke porting, ports in the cylinder. __TOC__ Piston engines Internal combustion engines An internal combustion piston engine, internal combustion engine is acted upon by the pressure of the expanding combustion gases in the combustion chamber space at the top of the cylinder. This force then acts dow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syringe
A syringe is a simple reciprocating pump consisting of a plunger (though in modern syringes, it is actually a piston) that fits tightly within a cylindrical tube called a barrel. The plunger can be linearly pulled and pushed along the inside of the tube, allowing the syringe to take in and expel liquid or gas through a discharge orifice at the front (open) end of the tube. The open end of the syringe may be fitted with a hypodermic needle, a nozzle or tubing to direct the flow into and out of the barrel. Syringes are frequently used in clinical medicine to administer injections, infuse intravenous therapy into the bloodstream, apply compounds such as glue or lubricant, and draw/measure liquids. There are also prefilled syringes (disposable syringes marketed with liquid inside). The word "syringe" is derived from the Greek σῦριγξ ('' syrinx'', meaning "Pan flute", "tube"). Medical syringes Medical syringes include disposable and safety syringes, injectio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
