If the fourth dimension is a physical concept and not purely metaphysical, through what medium does it extend??

If the film industry was becoming a director's medium, Woolfson felt the music business might well become a producer's medium.

If the sets are short to medium length the caller will often try to run the dance until each couple has danced with every other couple both as a 1 and a 2 and returned to where they started.

If very small amounts of solution are involved, most of the solution may be soaked up by the filter medium.

If so, these huge stars would have quickly consumed their supply of fuel and became supernovae, releasing heavy elements into the interstellar medium.

If the waves are propagating through an anisotropic ( i. e., not rotationally symmetric ) medium, for example a crystal, then the phase velocity vector and group velocity vector may point in different directions.

If the gain ( amplification ) in the medium is larger than the resonator losses, then the power of the recirculating light can rise exponentially.

If a recording is said to be letterboxed, that implies that the letterboxing was done prior to fixing the recording on the medium.

If the pump waves and the signal wave are superimposed in a medium with a non-zero χ < sup >( 3 )</ sup >, this produces a nonlinear polarization field:

If the number of photons being amplified per unit time is greater than the number of photons being absorbed, then the net result is a continuously increasing number of photons being produced ; the laser medium is said to have a gain of greater than unity.

If all the parts making up a medium were rigidly bound, then they would all vibrate as one, with no delay in the transmission of the vibration and therefore no wave motion.

If the impression is made purely as a relief resulting from the greater pressure on the paper where the high parts of the matrix touch, the seal is known as a dry seal ; in all other cases a liquid or liquified medium ( such as ink or wax ) is used, usually in another color than the paper.

If the path length in the birefringent medium is sufficient, plane waves will exit the material with a significantly different propagation direction, due to refraction.

If a point source is radiating energy in three dimensions and there is no energy lost to the medium, then the intensity decreases in proportion to distance from the object squared.

If, however, the medium of exchange function is more critical, new money may be more freely issued regardless of impact on either inflation or well-being.

If so, it then senses the medium continually until it becomes idle, and then it transmits the message ( a frame ).

If the medium becomes idle, the sender transmits a frame with a probability p. If the station chooses not to transmit ( the probability of this event is 1-p ), the sender waits until the next available time slot and transmits again with the same probability p. This process repeats until the frame is sent or some other sender starts transmitting.

If an original manuscript, typewritten text, or recording is available, then the medium itself ( or its packaging — anything from a box to e-mail headers ) can help prove or disprove the authenticity of the document.

If the medium is anisotropic, the permittivity is a second rank tensor.

* In optics, Hero formulated the Principle of the Shortest Path of Light: If a ray of light propagates from point A to point B within the same medium, the path-length followed is the shortest possible.

If the surrounding medium is not air, then the distance is multiplied by the refractive index of the medium.

If the Earth is traveling through an aether medium, a beam reflecting back and forth parallel to the flow of aether would take longer than a beam reflecting perpendicular to the aether because the time gained from traveling downwind is less than that lost traveling upwind.

If the circumstances are faced frankly it is not reasonable to expect this to be true.

If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.

If a work is divided into several large segments, a last-minute drawing of random numbers may determine the order of the segments for any particular performance.

If they avoid the use of the pungent, outlawed four-letter word it is because it is taboo ; ;

If Wilhelm Reich is the Moses who has led them out of the Egypt of sexual slavery, Dylan Thomas is the poet who offers them the Dionysian dialectic of justification for their indulgence in liquor, marijuana, sex, and jazz.

If he is the child of nothingness, if he is the predestined victim of an age of atomic wars, then he will consult only his own organic needs and go beyond good and evil.

If it is an honest feeling, then why should she not yield to it??

If he thus achieves a lyrical, dreamlike, drugged intensity, he pays the price for his indulgence by producing work -- Allen Ginsberg's `` Howl '' is a striking example of this tendency -- that is disoriented, Dionysian but without depth and without Apollonian control.

If love reflects the nature of man, as Ortega Y Gasset believes, if the person in love betrays decisively what he is by his behavior in love, then the writers of the beat generation are creating a new literary genre.

If he is good, he may not be legal ; ;

If the man on the sidewalk is surprised at this question, it has served as an exclamation.

If the existent form is to be retained new factors that reinforce it must be introduced into the situation.

If we remove ourselves for a moment from our time and our infatuation with mental disease, isn't there something absurd about a hero in a novel who is defeated by his infantile neurosis??

If many of the characters in contemporary novels appear to be the bloodless relations of characters in a case history it is because the novelist is often forgetful today that those things that we call character manifest themselves in surface behavior, that the ego is still the executive agency of personality, and that all we know of personality must be discerned through the ego.

If he is a traditionalist, he is an eclectic traditionalist.

If our sincerity is granted, and it is granted, the discrepancy can only be explained by the fact that we have come to believe hearsay and legend about ourselves in preference to an understanding gained by earnest self-examination.

If to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.

:: If crystal streams " with pleasing murmurs creep ,"

If there is a crystallographic structure to the target, and especially in semiconductor substrates where the crystal structure is more open, particular crystallographic directions offer much lower stopping than other directions.

If the applied voltage is large enough, the liquid crystal molecules in the center of the layer are almost completely untwisted and the polarization of the incident light is not rotated as it passes through the liquid crystal layer.

If the confinement is due many distributed Fresnel reflections, the device is termed a photonic crystal.

If nucleation is favored too much, a shower of small crystallites will form in the droplet, rather than one large crystal ; if favored too little, no crystal will form whatsoever.

* Heavy atom methods ( multiple isomorphous replacement ) – If electron-dense metal atoms can be introduced into the crystal, direct methods or Patterson-space methods can be used to determine their location and to obtain initial phases.

If the crystal were of any reasonable size, the number of electrons ( or holes ) required to be injected would have to be very large, making it less than useful as an amplifier because it would require a large injection current to start with.

If made of glass ( e. g. lead crystal ), it should be free from air bubbles but may be colored.

If absorption of light varies with the angle relative to the optical axis in a crystal then pleochroism results.

If χ < sub > xx </ sub > = χ < sub > yy </ sub > ≠ χ < sub > zz </ sub >, the crystal is known as uniaxial.

) If χ < sub > xx </ sub > ≠ χ < sub > yy </ sub > and χ < sub > xx </ sub > ≠ χ < sub > zz </ sub > the crystal is called biaxial.

If the temperature stays constant at its new value, the pyroelectric voltage gradually disappears due to leakage current ( the leakage can be due to electrons moving through the crystal, ions moving through the air, current leaking through a voltmeter attached across the crystal, etc.

If life develops on these worlds they usually take on many bizarre forms, like living crystal or rock, liquid or gaseous physical states, or incorporeal, dimensional, or energy-based states.

If a signal is strong enough, not even a power source is needed ; building an unpowered crystal radio receiver was a common childhood project in the early decades of AM broadcasting.

If the sample is oriented so that one particular plane is only slightly tilted away from the strongest diffracting angle ( known as the Bragg Angle ), any distortion of the crystal plane that locally tilts the plane to the Bragg angle will produce particularly strong contrast variations.

If the crystal migrates into regions with different environmental conditions, the growth pattern may change, and the final crystal may show mixed patterns.

If you lose your lucky rabbit's foot or magic power crystal you've literally lost your luck or power.

If the sample is tilted with respect to the incident electron beam, one can obtain diffraction patterns from several crystal orientations.

If water is cooled at a rate on the order of 10 < sup > 6 </ sup > K / s, the crystal nucleation can be avoided and water becomes a glass.

If the surface energy as a function of the planes is known, the equilibrium shape of the crystal may be found via the Wulff construction.