[permalink] [id link]
A rotating wall cloud with rear flank downdraft clear slot evident to its left rear
from
Wikipedia
Some Related Sentences
rotating and wall
This convergence of warm air in the updraft, and this cool air, causes a rotating wall cloud to form.
Under the updraft is a rain-free base, and the next step of tornadogenesis is the formation of a rotating wall cloud.
They typically report events, such as structures struck by lightning, rotating wall clouds, funnel clouds -- or conditions that exceed specific thresholds, such as extremely strong winds, significant hail or very heavy rainfall.
* Rota ( architecture ), a rotating cylinder built into a wall, used for exchanging mail and food with cloistered clergy
A late Art Nouveau-Gothic memorial fountain by Alfred Gilbert ( 1926 – 32 ) in the Marlborough Road wall of the house commemorates Queen Alexandra, and the grounds of the house include her pet cemetery and a thatch-roofed rotating summer house built for Queen Mary.
These continuously forming and collapsing volumetric displacements may take the form of pistons reciprocating in cylinders, gear teeth mating against the internal wall of a meter or through a progressive cavity created by rotating oval gears or a helical screw.
Mesocyclones are sometimes visually identifiable by a rotating wall cloud like the one in this thunderstorm over Texas.
Visual cues such as a rotating wall cloud or tornado may also hint at the presence of a mesocyclone.
In this film, the Batcave is accessed through a rotating wall in Wayne Manor's silver closet, the only room in the mansion that is kept locked.
In addition, the rotating exhaust acted as an effective wall at the outer edge of the engine base, and the entire base area effectively is pumped down below ambient due to ejector pump effect, creating an effective suction cup at the bottom in atmosphere.
Wall clouds are sometimes an indication of a rotating mesocyclone in a thunderstorm, and most strong tornadoes form from wall clouds.
Generally, a shelf cloud appears on the leading edge of a storm, and a wall cloud is usually at the rear of the storm, though small, rotating wall clouds ( a feature of a mesovortex ) can occur within the leading edge on rare occasion.
The wall cloud feature was first identified by Ted Fujita associated with tornadoes in tornadic storms .< ref name =" Fujita "> In the special case of a supercell thunderstorm but also occasionally with intense multicellular thunderstorms, the wall cloud will often be seen to be rotating.
A rotating wall cloud is the area of the thunderstorm that is most likely to produce tornadoes, and the vast majority of intense tornadoes.
Although it is rotating wall clouds that contain most strong tornadoes, many rotating wall clouds do not produce tornadoes.
Larger ( denser ) particles in the rotating stream have too much inertia to follow the tight curve of the stream, and strike the outside wall, then falling to the bottom of the cyclone where they can be removed.
# that the centrifugal force and the frictional force between the wall of the rotating flask and the liquid sample result in the formation of a thin film of warm solvent being spread over a large surface.
Outside the dome was an area with a giant car engine, a wall with a rotating display of old brand shields, and an attraction depicting the past, present, and future of automobile assembly.
As the mesocyclone approaches the ground, a visible condensation funnel appears to descend from the base of the storm, often from a rotating wall cloud.
rotating and cloud
As the cloud collapses the gas settles into a rapidly rotating disk.
A tornado is a violently rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.
A tornado is " a violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud, and often ( but not always ) visible as a funnel cloud ".
This tornado has no funnel cloud ; however, the rotating dust cloud indicates that strong winds are occurring at the surface, and thus it is a true tornado.
According to the Glossary of Meteorology, a funnel cloud is any rotating cloud pendant from a cumulus or cumulonimbus, and thus most tornadoes are included under this definition.
Among many meteorologists, the funnel cloud term is strictly defined as a rotating cloud which is not associated with strong winds at the surface, and condensation funnel is a broad term for any rotating cloud below a cumuliform cloud.
First, the rotating cloud base lowers.
As described above, the collapse of a rotating cloud of gas and dust leads to the formation of an accretion disk through which matter is channeled onto a central protostar.
A tornado is a violent, dangerous, rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.
rotating and with
The return spring tension may be adjusted to suit individual requirements by gripping the spring housing with a pair of pliers ( to prevent the spring from unwinding when it is released ), loosening the lock nut or screw, and rotating the housing until the desired tension is achieved.
The video signal is amplified and then switched, in synchronism with the three ultraviolet light sources which are sequenced by the rotating mirror so that during one-twentieth of a second only one wavelength, corresponding to red, green, or blue, is seen.
Since the earth is rotating and the unleveled gyro-stabilized platform is fixed with respect to a reference in space, an observer on the earth will see the platform rotating ( with respect to the earth ).
* In the Cree family, vowels are marked by rotating or flipping the consonants, and final consonants are indicated with either special diacritics or superscript forms of the main initial consonants.
Thomson postulated that the low mass, negatively charged electrons were distributed throughout the atom, possibly rotating in rings, with their charge balanced by the presence of a uniform sea of positive charge.
A member who accepts a service position or an organizing role is a " trusted servant " with terms rotating and limited, typically lasting three months to two years and determined by group vote and the nature of the position.
This features a main artillery gun, mounted in a fully rotating turret atop a tracked automotive hull, with various additional machine guns throughout.
For an object with a fixed mass that is rotating about a fixed symmetry axis, the angular momentum is expressed as the product of the moment of inertia of the object and its angular velocity vector:
For an object with a fixed mass that is rotating about a fixed symmetry axis,
The electrons ( as we know them today ) were thought to be positioned throughout the atom, but with many structures possible for positioning multiple electrons, particularly rotating rings of electrons ( see below ).
False-color image of the rapidly rotating star Altair, made with the MIRC imager on the CHARA array on Mount Wilson Observatory | Mt.
Isaac Newton's rotating bucket argument ( also known as " Newton's bucket ") was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.
The analogy in the case of rotating bucket is that the element of water surface will " slide " up or down the surface unless the normal to the surface aligns with the vector resultant formed by the vector addition F < sub > g </ sub > + F < sub > Cfgl </ sub >.
with the background energy level independent of r. In a static situation ( no motion of the fluid in the rotating frame ), this energy is constant independent of position r. Requiring the energy to be constant, we obtain the parabolic form:
It also merged the Council's High Representative with the Commission's foreign policy head, with this new figure chairing the foreign affair's Council rather than the rotating presidency.
In the early Roman Republic, 24 men at the age of around 20 were elected by the Tribal Assembly to serve as a commander in the legions, with six tribunes to each and command rotating among them.
The purpose of friction clutches is to connect a rotating member to one that is stationary, to bring it up to speed and to transmit power with little slippage.
Front view of the most common version of the Commodore 1541 disk drive, with open disk slot: this version uses a Newtronics drive mechanism, and the rotating lever is used to hold the disk in place
By starting with an inertial frame, where Newton's laws of motion hold, and keeping track of how the time derivatives of a position vector change when transforming to a rotating reference frame, the various fictitious forces and their forms can be identified.
The first time derivative evaluated within a reference frame with a coincident origin at but rotating with the absolute angular velocity is:
0.276 seconds.