Moreover, if Af and Af are two planes intersecting in a line l, tangent to Q at a point P, the two free intersections of the image curves Af and Af must coincide at P', the image of P, and at this point Af and Af must have a common tangent l'.

In the past, the men and women have chartered planes to Las Vegas and Jamaica, buses to Mineral Wells and Kerrville and private railway coaches to Shreveport and Galveston.

The future of manned aircraft is in doubt, which affects government procurement, and jet transports have revolutionized the airline trade -- one jet can take the place of three compound-engine planes.

Rosicrucians, in the same way of those who have had near-death experiences, speak of a life review period occurring immediately after death and before entering the afterlife's planes of existence ( before the silver cord is broken ), followed by a judgment, more akin to a Final Review or End Report over one's life.

As more people begin to use planes as their primary method of transportation, more elaborate methods of controlling aircraft safely in these high restrictive airspaces have been invented.

Other countries such as India, Poland, and Russia have enacted similar laws or decrees that allow the shooting down of hijacked planes.

Its F-15 Eagle fighter planes have no similar capability at extremely long ranges.

Face-centered cubic ( fcc ) structures differ from hexagonal close packed ( hcp ) structures only in stacking order: both structures have close packed atomic planes with sixfold symmetry — the atoms form equilateral triangles.

While light, highly maneuverable aircraft did have some advantages in fighter-versus-fighter combat, those could usually be overcome by sound tactical doctrine, and the design approach of the Italians and Japanese made their planes ill-suited as interceptors or attack aircraft.

Since the airport does not have any instrument landing capabilities, good visibility is required, and it is not uncommon for the planes to have to return to Bodø, two hours away, without landing.

Only chiral molecules ( i. e., those that have no internal planes of symmetry ) can give rise to such a phase.

Some victims were thrown from transport planes into the Atlantic Ocean on what have become famously known as death flights.

* 1962 – Cuban Missile Crisis: US President John F. Kennedy, after internal counsel from Dwight D. Eisenhower, announces that American reconnaissance planes have discovered Soviet nuclear weapons in Cuba, and that he has ordered a naval " quarantine " of the Communist nation.

( If both planes have the same number of vertices,

The three phases differ with each other in the number of CuO < sub > 2 </ sub > planes ; Bi-2201, Bi-2212 and Bi-2223 phases have one, two and three CuO < sub > 2 </ sub > planes, respectively.

The report concludes that the fireproofing on the Twin Towers ' steel infrastructures was blown off by the initial impact of the planes and that, if this had not occurred, the towers would likely have remained standing.

* 4: 35 a. m .: CNN reports that search warrants have been issued in south Florida because of information from the passenger lists of the hijacked planes.

There may have been more than four planes targeted for hijacking.

* two 3D figures have mirror symmetry, but with respect to different mirror planes.

** Radio Peking claims that U. S. planes have shot down a Chinese plane over Yunnan ( the U. S. denies the story the next day ).

Many airports have lighting that help guide planes using the runways and taxiways at night or in rain or fog.

Roads for vehicles and railroads have inclined planes in the form of gradual slopes, ramps, and causeways to allow vehicles to surmount vertical obstacles such as hills without losing traction on the road surface.

They are characterized by strong absorption of infrared radiation and have planes along which they cleave easily.

Eddy currents are closed loops of current that flow in planes perpendicular to the magnetic field.

When Italy entered the war in June 1940, the Mediterranean was closed to allied planes and BOAC and Qantas operated the Horseshoe Route between Durban and Sydney using Short Empire flying boats.

When the pre-War airport, a flying boat facility on Darrell's Island, closed in 1948, Bermuda's air routes were taken over by land planes operating through the airfield, which by then was operated by the United States Air Force, as Kindley Air Force Base.

The classification of closed surfaces, a foundational and historically significant result in topology, states that any closed surface can be expressed as the connected sum of a sphere with some number of tori and some number of real projective planes.

Suppose a planar closed loop carries an electric current I and has vector area S ( x, y, and z coordinates of this vector are the areas of projections of the loop onto the yz, zx, and xy planes ).

Once all the hatches and induction vents are closed the diving planes are used like the control surfaces of an airplane to pull the boat below the surface and level out at the desired depth, typically between 70 and 90 meters ( 230 and 295 feet ).

All these planes were returned to their lessor after the airline closed December 7, 2005

The incident caused the runway to be closed for 10 to 15 minutes but no planes were delayed.

The President closed both the National College and the National University as " hotbeds of revolutions ," and appealed for voluntary contributions to purchase three squadrons of bombing planes in order to put down further revolts.

The duocylinder is so called because these two bounding 3-manifolds may be thought of as 3-dimensional cylinders ' bent around ' in 4-dimensional space such that they form closed loops in the XY and ZW planes.

These planes are also home to the souls of valorous mortals, who deserved a place among the gods in the afterlife.

The gods withdrew from the world in retaliation for mortal incursions into their planes.

Following this, they retrieve the Tablets of Fate that the gods needed to return to the planes.

Some planeswalkers are considered to be gods by the inhabitants of the planes.

The fact that the " gods " that descended into the town's harbor every year are stylized planes doesn't bother the residents.

Planes of VF-84 ( temporarily assigned to VF-41 for the 1973-74 cruise and operating with VF-41 markings ) escorted US transport planes to within 150 miles of Israel during Operation Nickel Grass, the resupply of Israel.

Because biological processes temporarily stop for those on the Astral, the githyanki must travel to other planes to breed, normally the Prime Material Plane.

A lessor temporarily seized one of Azteca's planes in February 2007 in the United States.

However, after this brief period of invulnerability, the planes in the SNES version will temporarily become completely vulnerable.

The apport (" ectoplasm ", or whatever ) may be composed of " etheric ", " astral ", " mental ", or " causal " substance ( i. e., a substance naturally residing on one of those planes and only temporarily transported into the physical plane ).