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The tube experiences a downward force of magnitude 2πrdσ.
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tube and experiences
The diver also experiences this change in pressure, but with greater rates of pressure change ; active opening of the Eustachian tube is required more frequently as the diver goes deeper into higher pressure.
What is usually agreed upon is that the air in the tube experiences mostly " solid body rotation ", which simply means the rotation rate ( angular velocity ) of the inner gas is the same as that of the outer gas.
tube and downward
When a drill is used, the cutting apparatus is on the bottom end of a drill barrel, the tube which surrounds the core as the drill cuts downward around the edge of the cylindrical core.
Like other boletes, it has tubes extending downward from the underside of the cap, rather than gills ; spores escape at maturity through the tube openings, or pores.
After equilibration, an equal volume from each tube is squirted onto small, round, nitrocellulose filters which are arranged on a vacuum plate ( a flat surface that has a vacuum applied from below to suck fluid downward ).
From the lower part of the saccule a short tube, the canalis reuniens of Hensen, passes downward and opens into the ductus cochlearis near its vestibular extremity.
This bolt is connected to a star nut driven down into the steerer tube that acts as an anchor by gripping the inside of the steerer tube with a downward force.
An alternative to the electric vortex mixer is the " finger vortex " technique in which a vortex is created manually by striking a test tube in a forward and downward motion with one's finger or thumb.
tube and force
The fibres create a seal that allows the pressure to force the dart through the tube.
The flow profile of laminar flow in a tube can be calculated by dividing the flow into thin cylindrical elements and applying the viscous force to them.
The capillary action refers to the tendency of water to move up a narrow tube against the force of gravity.
The current into or out of the flux tube must be associated with a force that slows down this spinning.
The field inside the magnet had essentially-parallel lines of force, parallel to the axis of the tube.
The force of the explosion expands the tube against the walls of its chamber, while the internal structure of the tube renders it gas-tight, preventing any escape of gas through the vent.
The seamless steel tube industry in the United States was born in Shelby in 1890 with the establishment of " The Tuby ” Other business of note over the years included the lamp works, the gum company, the bicycle factory, the insurance company, and the air force depot.
The color force favors confinement because at a certain range it is more energetically favorable to create a quark-antiquark pair than to continue to elongate the color flux tube.
Brown noticed that there was a force exerted by the tube when it was connected to a high-voltage source.
The sedimentation rate is the rate at which particles of a given size and shape travel to the bottom of the tube under centrifugal force.
where is the liquid-air surface tension ( force / unit length ), θ is the contact angle, ρ is the density of liquid ( mass / volume ), g is local gravitational field strength ( force / unit mass ), and r is radius of tube ( length ).
Traditionally, the sample is mounted on a piezoelectric tube, that can move the sample in the z direction for maintaining a constant force, and the x and y directions for scanning the sample.
Chemists and biologists may increase the effective gravitational force on a test tube so as to more rapidly and completely cause the precipitate (" pellet ") to gather on the bottom of the tube.
So, the government turned to a policy of force feeding hunger-strikers by nasogastric tube.
While some models may have a one-way valve at the bottom of the tube which forces some of the boiling water up the tube, most operate on the simple principle that the rising bubbles will force the liquid up the tube.
To ensure this rotation was complete and the latches were in the proper position, the DC-10 cargo hatch design included a separate locking mechanism that consisted of small locking pins that slid behind flanges on the lock torque tube ( which transferred the actuator force to the latch hooks through a linkage ).
The incident investigators discovered that the rod connecting the pins to the handle was weak enough that it could be bent with repeated operation and some force being applied, allowing the baggage handler to close the handle with his knee in spite of the pins interfering with the torque tube flanges.
This meant that the pins did not extend past the torque tube flanges, allowing the handle to be closed without excessive force ( estimated by investigators to be around 50 lbs ) despite the improperly engaged latches.
Echinoderms move by alternately contracting muscles that force water into the tube feet, causing them to extend and push against the ground, then relaxing to allow the feet to retract.
tube and magnitude
Because the output pulse from a Geiger-Muller tube is always the same magnitude regardless of the energy of the incident radiation, the tube cannot differentiate between certain radiation types.
However, the G-M tube produces a pulse output which is the same magnitude for all detected radiation, so a Geiger counter with an end window tube cannot distinguish between alpha and beta particles.
Here u might describe the displacement of a stretched string from equilibrium, or the difference in air pressure in a tube, or the magnitude of an electromagnetic field in a tube, and c is a number that corresponds to the velocity of the wave.
For a particular tube geometry and operating voltage this termination always occurs when a certain number of avalanches have been created, therefore the pulses from a tube are always of the same magnitude regardless of the energy of the initiating particle.
Adjustment of the spirit level is performed by successively rotating the level and moving the bubble tube within its housing to take up roughly half of the discrepancy, until the magnitude of the reading remains constant when the level is flipped.
The tube is subjected to internal pressure of sufficient magnitude to enlarge the bore and in the process the inner layers of the metal are stretched beyond their elastic limit.
tube and .
only the counter at one end was lighted by a long fluorescent tube suspended directly above it.
However, the surface temperature gradient can produce erroneous vapor-pressure measurements for the bulk liquid helium unless precautions are taken to isolate the tube ( which passes through the surface to the vapor pressure bulb ) from the liquid helium surface.
The bore is unrifled but is provided with an insert tube which is rifled and which, surprisingly, gives pretty fair accuracy even though it's only 3-1/2 inches long.
Three separate amplifiers then drive a 21-inch tricolor tube.
One simple method of measuring the expansion of the heart is to tie a thin rubber tube, filled with mercury, around the heart and record the change in resistance as the tube is stretched.
The cathode consisted of a 1/4'' '' diameter thoriated tungsten rod attached to a water cooled copper tube.
This tube could be adjusted in its axial direction by an electric drive to establish the required electrode spacing.
Argon was also blown at low velocities ( mass flow rate Af ) through a tube coaxial with the cathode as an additional precaution against contamination of the arc by air.
A plug and a tube with holes in its cylindrical walls divided the chamber above the porous plug into two parts.
Spectra were also obtained from a sample in a spherical container which was made by blowing a bubble on the end of a capillary glass tube.
-- Matheson highest purity tank chlorine was passed through a tube of resublimed Af into an evacuated Pyrex system where it was condensed with liquid air.
The purified product was stored at -78-degrees in a tube equipped with a break seal.
The radiochlorine was stored at -78-degrees in a tube equipped with a break seal.
The contents of the manifold for liquid phase experiments were then mixed by shaking, redistributed to the reaction tubes, frozen down, and each tube was then sealed off.
Both types of tube withstood the pressure of approximately 20 atmospheres exerted by the carbon tetrachloride at 220-degrees.
After titration of the liberated Af with Af, aliquots of the aqueous and of the organic phase were counted in a solution-type Geiger tube.
In the liquid phase runs the amount of carbon tetrachloride in each reaction tube was determined by weighing the tube before opening and weighing the fragments after emptying.
Anti-A and anti-B activities were determined in fractions from the sera of group A, group B or group O donors by the following tube agglutination methods.
One drop of each sample was added to one drop of a 2% suspension of group Af or group B red cells in a small Af test tube.
Successive 1-ml fractions were then drawn off with a hypodermic syringe, starting at the top of the tube, and tested for agglutinin activity.
The luminous efficiency and resolution of single stages, fiber couplers, and finally of the composite tube will be computed.
It will be shown theoretically that the high image intensification obtainable with such a tube and contact photography permits the utilization of extremely low incident light levels.
Measured performance characteristics for this experimental tube will be listed.
2.679 seconds.