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Page "Diffraction" ¶ 17
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When and waves
When oscillating electric currents flow at the correct voltages within radio antennas, radio waves are generated.
When these vessels of a new model were built, which were intended to " clip " over the waves rather than plough through them, the improved type of craft became known as " clippers " because of their speed.
) When Thomas Young first demonstrated this phenomenon, it indicated that light consists of waves, as the distribution of brightness can be explained by the alternately additive and subtractive interference of wavefronts.
When the two waves are in phase, i. e. the path difference is equal to an integral number of wavelengths, the summed amplitude, and therefore the summed intensity is maximum, and when they are in anti-phase, i. e. the path difference is equal to half a wavelength, one and a half wavelengths, etc., then the two waves cancel and the summed intensity is zero.
When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave.
When a single photon is sent through an interferometer, it passes through both paths, interfering with itself, as waves do, yet is detected by a photomultiplier or other sensitive detector only once.
When EM radiation at the frequences for which it is referred to as " radio waves " impinges upon a conductor, it couples to the conductor, travels along it, and induces an electric current on the surface of the conductor by moving the electrons of the conducting material in correlated bunches of charge.
When processing signals, such as audio, radio waves, light waves, seismic waves, and even images, Fourier analysis can isolate individual components of a compound waveform, concentrating them for easier detection and / or removal.
When the stone hits the surface of the water, a circular pattern of waves appears.
When inserted together with a galvanometer, into a tuned electrical circuit, it could be used as a very sensitive rectifying detector of high frequency wireless currents, known as radio waves.
When he came into view, waves of sound began to build throughout the stadium, rising to a roar, then to a thunder.
When it was found in 1900 by Max Planck that the energy of waves could be described as consisting of small packets or " quanta ", Albert Einstein further developed this idea to show that an electromagnetic wave such as light could be described as a particle ( later called the photon ) with a discrete quantum of energy that was dependent on its frequency.
When the waves are steep, it may be necessary to sail closer to the wind to avoid waves directly on the beam.
When large tidal flows enter the Strait and the high tide relaxes, internal waves are generated at the Camarinal Sill and proceed eastwards.
When he added cylindrical reflectors behind his dipole antennas, Hertz could detect radio waves about 20 metres from the transmitter in his laboratory.
When this outflow of material eventually impacts the surrounding gas, the shock waves that are created compress and heat the gas.
When the propagation speed of these electromagnetic waves was calculated, the speed of light fell out.
When a medium is nonlinear, the response to complex waves cannot be determined from a sine-wave decomposition.

When and are
When I show up he will know you are a good wife to have told him about it ''.
When the Know-nothings get control, it will read, All men are created equal except Negroes and foreigners and Catholics.
When the reactionary response is thus bolstered by an intellectual defense, the characteristics of that defense are explicable only in terms of the basic attitudes of unanalyzed reaction.
When combined with the metaphysical notion that pure forms of this universe are best appreciated when least embodied in a material substratum, it becomes clear that while earth will be dross on a scale of material-formal ratios, celestial bodies will be of a subtle, quickened, ethereal existence, in whose embodiment pure form will be the dominant component and matter will be absent or remain subsidiary.
She used to tell me, `` When I stand there and look at the flag blowing this way and that way, I have the wonderful, safe feeling that Americans are protected no matter which way the wind blows ''.
When we consider the disorganized state of the world community, and the legacy of predispositions adversely directed against all who are identified as Jews, it is obvious that the struggle for the minds and muscles of men needs to be prosecuted with increasing vigor and skill.
When these fields are surveyed together, important patterns of relationship emerge indicating a vast community of reciprocal influence, a continuity of thought and expression including many traditions, primarily literary, religious, and philosophical, but frequently including contact with the fine arts and even, to some extent, with science.
When different colors are used, she is just as likely to color trees purple, hair green, etc..
When finally the two bedraggled men reach their friend's home, Voltaire's fears are once again aroused.
`` When are you to leave ''??
When the roof blocks are all in place, the final rows of wall blocks are mortared into position.
When the aid operations are reorganized the Peace Corps should remain a semi-autonomous, functional unit.
When the budget goes to trustees for approval it is the president's budget, to which his faith and credit are committed ; ;
When they have 4 to 6 leaves and are thrifty little plants, it's time to set them out where they are to remain.
When aircraft are no longer helpless on airfields, they are no longer vulnerable to Aj.
When more than two figures are separated by subtraction symbols the subtraction must be carried out from the left to right if the result is to be correct.
When they're on, the top edges are planed even with the sheer batten.
When painting, Mason's physical eyes are half-closed, while his mind's eye is wide open, and this circumstance accounts in part for the impression he wishes to convey.
When improvements are recommended in working conditions -- such as lighting, rest rooms, eating facilities, air-conditioning -- do you try to set a measure of their effectiveness on productivity??
When sufficiently accurate and complete measurements are available, it will be possible to set limits on the thermal and electrical characteristics of the surface and subsurface materials of the moon.
When some thirteen records of newly and recently born individuals are collated, little or no correlation between length and distribution can be detected.
When three dice are tossed repeatedly, what is the probability that the number of aces is 0 ( or 1, or 2, or 3 )??

When and added
When he added to his Pittsburgh commitments the directorship of the London Philharmonic Orchestra in 1958, he conducted one hundred fifty concerts within nine months, `` commuting '' between the two cities.
When he wanted to emphasize, or get greater intensity, he added or subtracted clay.
When the resin has hardened, mix up another batch with a pigment added if you wish.
When typical reaction cells to which 0.3 of an atmosphere of oxygen had been added were illuminated, chlorine and phosgene were produced.
When ity is added, real clearly has two syllables.
When more electrons are added to a single atom, the additional electrons tend to more evenly fill in a volume of space around the nucleus so that the resulting collection ( sometimes termed the atom ’ s “ electron cloud ” ) tends toward a generally spherical zone of probability describing where the atom ’ s electrons will be found.
When added in 1854, it was assigned to 6 February.
The monochrome combinations still existing in the 1950s are standardized by the International Telecommunication Union ( ITU ) as capital letters A through N. When color television was introduced, the hue and saturation information was added to the monochrome signals in a way that black & white televisions ignore.
When the Church chooses to canonize new material, it is typically added to the Doctrine and Covenants ; the most recent changes were made in 1981.
When scientists transfer a gene from one cell into another cell in order to express the new genetic material as a protein in the recipient cell, the cDNA will be added to the recipient ( rather than the entire gene ), because the DNA for an entire gene may include DNA that does not code for the protein or that interrupts the coding sequence of the protein ( e. g., introns ).
When it was added in 1597, it was put on the day of her death, April 29, as now, but because of a conflict with the feast of Saint Peter of Verona, which was also on April 29, it was moved in 1628 to the new date of April 30.
When Stamford Bridge was redeveloped in the Ken Bates era many additional features were added to the complex including two hotels, apartments, bars, restaurants, the Chelsea Megastore, and an interactive visitor attraction called Chelsea World of Sport.
When these forces are added, the equation of motion has the form:
When his colleague Richard Courant wrote the now classic Methods of Mathematical Physics including some of Hilbert's ideas, he added Hilbert's name as author even though Hilbert had not directly contributed to the writing.
When the military added psychiatric screening to its induction process, it included homosexuality as a disqualifying trait, then seen as a form of psychopathology.
When the module is compiled into your program, all strings ( and other objects ) will get the added functionality.
When he wrote to Stephen Spender in 1952, thanking him for a review of his Collected Poems, he added " Oh, & I forgot.
When the clarinetist Ferdinand Troyer commissioned a work from Franz Schubert for similar forces, he added one more violin for his Octet in F major, D. 803.
When a vertex v is added, we split in three the triangle that contains v, then we apply the flip algorithm.
When applied to Sanskrit, however, it added a great deal of complexity to the script, due to the large variety of clusters in this language ( up to five consonants, e. g. rtsny ).
) When a nucleotide is being added to a growing DNA strand, two of the phosphates are removed and the energy produced creates a phosphodiester bond that attaches the remaining phosphate to the growing chain.
When Greek orthography was codified by grammarians in the Hellenistic era, they used a diacritic symbol derived from this half-H shape to signal the presence of / h /, and added as its counterpart a reverse-shaped diacritic to denote absence of / h /.
When this suffix is added, the vowel pronunciations change largely owing to the moveable stress:
When added to wine before the fermentation process is complete, the alcohol in the distilled beverage kills the yeast and leaves residual sugar behind.

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