Archery is the art, sport, practice, or skill of using a bow to shoot arrows. The word comes from the Latin arcus. Historically, archery has been used for hunting and combat. In modern times, it is mainly a competitive sport and recreational activity. A person who participates in archery is typically called an archer or a bowman, and a person who is fond of or an expert at archery is sometimes called a toxophilite.
An explosive is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two substances.
Kryptonite is a fictional material that appears primarily in Superman stories. In its most well-known form, it is a green, crystalline material originating from Superman's home world of Krypton, that emits a peculiar radiation that weakens Superman, but is generally harmless to humans when exposed to it in short term. There are other varieties of kryptonite such as red and gold kryptonite which have different but still generally negative effects on Superman. Due to Superman's popularity, kryptonite has become a byword for an extraordinary exploitable weakness, synonymous with "Achilles' heel".
Trinitrotoluene (; TNT), or more specifically 2,4,6-trinitrotoluene, is a chemical compound with the formula C6H2(NO2)3CH3. This yellow solid is sometimes used as a reagent in chemical synthesis, but it is best known as an explosive material with convenient handling properties. The explosive yield of TNT is considered to be the standard measure of bombs and the power of explosives. In chemistry, TNT is used to generate charge transfer salts.
A shaped charge is an explosive charge shaped to focus the effect of the explosive's energy. Various types are used to cut and form metal, initiate nuclear weapons, penetrate armor, and perforate wells in the oil and gas industry.
An arrow is a fin-stabilized projectile that is launched via a bow, and usually consists of a long straight stiff shaft with stabilizers called fletchings, as well as a weighty arrowhead attached to the front end, and a slot at the rear end called the nock for engaging the bowstring. The use of bows and arrows by humans predates recorded history and is common to most cultures. A craftsman who makes arrows is a fletcher, and one that makes arrowheads is an arrowsmith.
An armor-piercing shell, AP for short, is a type of ammunition designed to penetrate armor. From the 1860s to 1950s, a major application of armor-piercing projectiles was to defeat the thick armor carried on many warships. From the 1920s onwards, armor-piercing weapons were required for anti-tank missions. AP rounds smaller than 20 mm are typically known as "armor-piercing ammunition", and are intended for lightly-armored targets such as body armor, bulletproof glass and light armored vehicles. The classic AP shell is now seldom used in naval warfare, as modern warships have little or no armor protection, and newer technologies have displaced the classic AP design in the anti-tank role.
A projectile is any object thrown into space by the exertion of a force. Although any object in motion through space may be called a projectile, the term more commonly refers to a ranged weapon. Mathematical equations of motion are used to analyze projectile trajectory. An object projected at an angle to the horizontal has both the vertical and horizontal components of velocity. The vertical component of the velocity on the y-axis given as Vy=USin(teta) while the horizontal component of the velocity Vx=UCos(teta). There are various terms used in projectiles at specific angle teta 1. Time to reach maximum height. It is symbolized as (t), which is the time taken for the projectile to reach the maximum height from the plane of projection. Mathematically, it is give as t=USin(teta)/g Where g=acceleration due to gravity(app 10m/s²) U= initial velocity (m/s) teta= angle made by the projectile with the horizontal axis.
The bow and arrow is a ranged weapon system consisting of an elastic launching device (bow) and long-shafted projectiles (arrows).
An arrowhead is a tip, usually sharpened, added to an arrow to make it more deadly or to fulfill some special purpose. The earliest arrowheads were made of stone and of organic materials; as human civilization progressed other materials were used. Arrowheads are important archaeological artifacts; they are a subclass of projectile points. Modern enthusiasts still "produce over one million brand-new spear and arrow points per year". One who manufactures metal arrowheads is an arrowsmith.
Miniature conversion refers to the practice of altering the appearance of a miniature or model so as to deviate from the standard version purchased in a boxed set.
Batman's utility belt is a feature of Batman's costume. Similar belts are used by the various Robins, Batgirl, and other members of the Bat-family.
Merlyn, otherwise known as the Dark Archer, is a fictional supervillain appearing in comic books published by DC Comics. He is a deadly bow-wielding assassin and contract killer who serves as the archenemy of Green Arrow, though writers have developed him over the years as an adversary of other superheroes in the DC Universe as well, such as Batman and Black Canary.
The Kryptonite Man is the name of several supervillains who appear in stories published by DC Comics.
These novelty forms of archery are generally regarded as amusements, and, as such, are not governed by organizationally-sanctioned rules.
Ammunition is the material fired, scattered, dropped or detonated from any weapon. Ammunition is both expendable weapons and the component parts of other weapons that create the effect on a target. Nearly all mechanical weapons require some form of ammunition to operate.
Explosive materials are produced in numerous physical forms for their use in mining, engineering, or military applications. The different physical forms and fabrication methods are grouped together in several use forms of explosives.
Ya is the Japanese word for arrow, and commonly refers to the arrows used in Kyudo. Ya also refers to the arrows used by samurai during the feudal era of Japan. Unlike Western arrows, the ya is close to a metre long or longer. Traditional ya are made from natural materials, usually bamboo, while modern ones may use aluminium or carbon fiber. The US company Easton and the Japanese company Mizuno are the main manufacturers of modern ya shafts. More than 90 percent of Kyudo practitioners in Japan today use Easton shafts.
The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion nuclear weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s.
Lego Batman: The Movie – DC Super Heroes Unite is a direct-to-video animated superhero action comedy film based on the video game Lego Batman 2: DC Super Heroes. Though the film has cutscenes from the video game, the gameplay is replaced by new scenes with the same actors. The plot revolves around Lex Luthor and the Joker teaming up to destroy Gotham City with Batman and Robin teaming up with the Justice League in order to save Gotham. The film was released on Blu-ray and DVD on 21 May 2013.
