Search results
Results From The WOW.Com Content Network
Table of explosive detonation velocities. This is a compilation of published detonation velocities for various high explosive compounds. Detonation velocity is the speed with which the detonation shock wave travels through the explosive. It is a key, directly measurable indicator of explosive performance, but depends on density which must ...
When sound film was introduced in 1926, variations in film speed were no longer tolerated, as the human ear is more sensitive than the eye to changes in frequency. Many theaters had shown silent films at 22 to 26 FPS, which is why the industry chose 24 FPS for sound film as a compromise.
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn ), or 1 km in 2.91 s or one mile in 4.69 s. It depends strongly on temperature as well as the medium through which a ...
Muzzle velocity. Muzzle velocity is the speed of a projectile ( bullet, pellet, slug, ball / shots or shell) with respect to [1] the muzzle at the moment it leaves the end of a gun 's barrel (i.e. the muzzle ). [2] Firearm muzzle velocities range from approximately 120 m/s (390 ft/s) to 370 m/s (1,200 ft/s) in black powder muskets, [3] to more ...
Subsonic ammunition. Subsonic ammunitions are ammunitions designed to operate at velocities below the speed of sound ( Mach 1), which at standard conditions is 340.29 m/s (1,116.4 ft/s). This avoids the supersonic shockwave or "crack" of a supersonic bullet, which, particularly for suppressed firearms, influences the loudness of the shot.
Standard 8 mm film, also known as Regular 8 mm, Double 8 mm, Double Regular 8 mm film, or simply as Standard 8 or Regular 8, is an 8 mm film format originally developed by the Eastman Kodak company and released onto the market in 1932. Super 8 (left) and Regular 8 mm (right) film formats. Magnetic sound stripes are shown in gray.
Detonation velocity. Explosive velocity, also known as detonation velocity or velocity of detonation (VoD), is the velocity at which the shock wave front travels through a detonated explosive. Explosive velocities are always faster than the local speed of sound in the material. If the explosive is confined before detonation, such as in an ...
Hypersonic weapon. An Air-Launched Rapid Response Weapon (ARRW) carried by a B-52 bomber. Scramjet-powered hypersonic cruise missile. A hypersonic weapon is a weapon capable of travelling at hypersonic speed, defined as between 5 and 25 times the speed of sound or about 1 to 5 miles per second (1.6 to 8.0 km/s). [1]