Search results
Results From The WOW.Com Content Network
Air bubbles rising from a scuba diver in water A soap bubble floating in the air. A bubble is a globule of a gas substance in a liquid. In the opposite case, a globule of a liquid in a gas, is called a drop. [1] Due to the Marangoni effect, bubbles may remain intact when they reach the surface of the immersive substance.
Based on air resistance, for example, the terminal speed of a skydiver in a belly-to-earth (i.e., face down) free fall position is about 55 m/s (180 ft/s). [3] This speed is the asymptotic limiting value of the speed, and the forces acting on the body balance each other more and more closely as the terminal speed is approached.
Shannon Appelcline, in the book Designers & Dragons (2011), highlighted that in 1989 Spelljammer was the first of a host of new campaign settings published by TSR. It was created by Jeff Grubb and "introduced a universe of magical starships traversing the 'crystal spheres' that contained all the earthbound AD&D campaign worlds.
The Minnaert resonance [1] [2] [3] is a phenomenon associated with a gas bubble pulsating at its natural frequency in a liquid, neglecting the effects of surface tension and viscous attenuation. It is the frequency of the sound made by a drop of water from a tap falling in water underneath, trapping a bubble of air as it falls.
The Mitsubishi Air Lubrication System (MALS) [1] is a system that reduces the viscous resistance component of the hull of ship by creating a layer of air bubbles below the hull of the ship. This reduces frictional resistance between the hull and the seawater. The system has been designed for bulk carriers and passenger ships. [2]
The fluid pressure behind the object is lowered below the vapour pressure of the liquid, forming a bubble of vapour (a cavity) that encompasses the object and reduces drag. Supercavitation is the use of a cavitation bubble to reduce skin friction drag on a submerged object and enable high speeds .
Pneumoperitoneum is pneumatosis (abnormal presence of air or other gas) in the peritoneal cavity, a potential space within the abdominal cavity.The most common cause is a perforated abdominal organ, generally from a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma.
Submerged antibubbles of air surrounded by soapy water Cluster of antibubbles on the surface of soapy water. An antibubble is a droplet of liquid surrounded by a thin film of gas, [1] as opposed to a gas bubble, which is a sphere of gas surrounded by a liquid.