Wave Length Concordance
Wave Length
Section titled “Wave Length”Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.
279 hits
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9 sources
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39 sections
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Matched Aliases
Section titled “Matched Aliases”Wave length, wave length, wave lengths, wave-length, wave-lengths, wavelength
Source Distribution
Section titled “Source Distribution”| Source | Hits | Sections |
|---|---|---|
| Theory and Calculation of Transient Electric Phenomena and Oscillations | 118 | 19 |
| Radiation, Light and Illumination | 85 | 7 |
| General Lectures on Electrical Engineering | 34 | 2 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 15 | 3 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 15 | 3 |
| Four Lectures on Relativity and Space | 6 | 2 |
| Theory and Calculation of Alternating Current Phenomena | 3 | 1 |
| Theory and Calculation of Alternating Current Phenomena | 2 | 1 |
| Theory and Calculation of Alternating Current Phenomena | 1 | 1 |
Section Hits
Section titled “Section Hits”Representative Source Snippets
Section titled “Representative Source Snippets”Lecture 1: Nature And Different Forms Of Radiation - 36 hit(s)
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... ves are in phase, as Al and B^ in Fig. 3 add to Cr If, however, the two beams A2 and B2 are not in phase, their resultant C2 is less than their sum, and if the two beams A3 and B3 in Fig. 3 happen to be in opposition (180 degrees apart), that is, one-half wave length out of phase with each other, their resultant is zero, that is, they blot each other out. Assuming now we take a plain glass plate A (Fig. 4) and a slightly curved plate B, touching each other at (7, and illuminate them by a beam of uniform light — as t ...Chapter 3: Standing Waves - 34 hit(s)
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... e, two different cases exist, depending upon the rela- tive values of Ar* and LCm2, and in addition thereto the inter- mediary or critical case, in which k2 = LCm2. These three cases require separate consideration. is a circuit constant, while k is the wave length constant, that is, the higher k the shorter the wave length. A. Short waves, k2 > LCm2, (99) hence, R2 = k2 - LCm2 (100) and q = V ^ - ™\ 442 STANDING WAVES 443 or approximately, for very large k, Herefrom then follows and VLC ...Lecture 17: Arc Lighting - 26 hit(s)
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... ce, from heat energy by raising a body to a 230 GENERAL LECTURES high temperature. Then the heat energy is converted into radi- ation and issues from the heated body, as for instance an incan- descent lamp filament, as a mass of radiations of different wave lengths, that is, different frequencies. All kinds of frequencies appear : from very low frequencies, that is only a few millions of millions of cycles per second, up to many times higher frequencies. We can get, if we desire, still very much lower fre- quencies, ...Lecture 3: Physiological Effects Of Radiation - 19 hit(s)
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LECTURE III. PHYSIOLOGICAL EFFECTS OF RADIATION. Visibility. 20. The most important physiological effect is the visibility of the narrow range of radiation, of less than one octave, between wave length 76 X 10~6 and 39 X 1Q-6. The range of intensity of illumination, over which the eye can see with practically equal comfort, is enormous: the average intensity of illumination at noon of a sunny day is nearly one million times greater than the illuminatio ...Chapter 2: Long-Distance Transmission Line - 13 hit(s)
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... the number of periods, or frequency of the impressed alternating e.m.fs., in resonance condition, is the velocity of light divided by four times the length of the line; or, in free oscillation or resonance condition, the length of the line is one quarter wave length. 279 280 TRANSIENT PHENOMENA If then I = length of line, S = speed of light, the frequency of oscillations or natural period of the line is — '• "4? or, with I given in miles, hence S = 188,000 miles per second, it is , 47,000 /o = — j- cycles ...Chapter 5: Free Oscillations - 12 hit(s)
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... ions of the electric circuit, (50) and (51), contain eight terms: four waves: two main waves and their reflected waves, and each wave consists of a sine term and a cosine term. The equations contain five constants, namely: the frequency constant, g; the wave length constant, &; the time attenuation constant, u\ the distance attenuation constant, h, and the time acceleration constant, s ; among these, the time attenuation, uy is a constant of the circuit, independent of the character of the wave. By the value of the ...Lecture 7: Line Oscillations - 11 hit(s)
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... se of current i and voltage e changes pro- gressively along the line I, so that at some distance Iq current and voltage are 360 degrees displaced from their values at the starting point, that is, are again in the same phase. This distance Zo is called the wave length, and is the distance which the electric field travels during one period to — -j. of the frequency of oscillation. As current and voltage vary in phase progressively along the line, the effect of inductance and of capacity, as represented by the inductan ...Lecture 7: Line Oscillations - 11 hit(s)
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... se of current i and voltage e changes pro- gressively along the line Z, so that at some distance 1Q current and voltage are 360 degrees displaced from their values at the starting point, that is, are again in the same phase. This distance Z0 is called the wave length, and is the distance which the electric field travels during one period to = j of the frequency of oscillation. As current and voltage vary in phase progressively along the line, the effect of inductance and of capacity, as represented by the inductance ...Lecture 9: Measurement Of Light And Radiation - 11 hit(s)
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... e produced by the energy of the incident beam of radia- tion is observed. Probably the most sensitive method of measuring even very small amounts of radiation is the bolometer. The beam of the radiation (or after dissolving the beam into a spectrum, the wave length of which the power is to be measured) impinges upon a narrow and thin strip of metal, as platinum, and thereby raises its temperature by conversion of the radiation energy into heat. A rise of temperature, however, produces a rise of electric resistance, ...Chapter 6: Alternating Magnetic Flux Distribution - 10 hit(s)
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... equations of the distribution of alternating magnetic flux in a laminated conductor are of the same form as the equations of distribution of current and voltage in a transmission line, but more special in form, that is, the attenuation constant a and the wave length constant /? have the same value, c. As result, the distribution of the alternating magnetic flux in the lamina depends upon one constant only, clQ. The wave length is given by cZ = 2 * ALTERNATING MAGNETIC FLUX DISTRIBUTION 361 i hence and by ( ...Chapter 8: Velocity Of Propagation Of Electric Field - 9 hit(s)
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... e greater the distance from the conductor. Since the velocity of propagation is very high — about 3 X 1010 centimeters per second — the wave of an alternating or oscillating current even of very high frequency is of considerable length ; at 60 cycles the wave length is 0.5 X 109 centimeters, and even at a million cycles the wave length is 30,000 centimeters, or about 1000 feet, that is, very great compared with the distance to which electric fields usually extend. The important part of the electric field of a conduc ...Lecture 7: High Frequency Oscillations And Surges - 8 hit(s)
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... open circuit, and the instantaneous opening of a short circuit on a transmission line — as it occasionally occurs by the sudden rupture of a short circuiting arc — ^therefore gives rise to the most powerful, and thereby most destructive oscillation. The wave length of oscillation thus depends on the length of the circuit in which the stored energy readjusts itself. For instance, in the short circuit oscillation of the system, the wave extends over the entire circuit, including generators and trans- formers ; and the ...Chapter 2: Discussion Of General Equations - 7 hit(s)
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... o, k = 0 and to h = 0, s = 0. 8. In the equations (50) and (51) qt = 2x gives the time of a complete cycle, that is, the period of the wave, and the frequency of the wave is / = -L 2 kl = 27T gives the distance of a complete cycle, that is, the wave length, W 7 7 k (u — s) t = 1 and (u + s) t = 1 give the time, */'- — and t"= -*—, during which the wave decreases to - = 0.3679 of its value, and hi = 1 gives the distance, over which the wave decreases to - = 0.3679 of its value; £ that is, q ...Lecture 6: Luminescence - 6 hit(s)
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... ally comprised by the name luminescence. Some special cases of luminescence have already been discussed in the phe- nomena of fluorescence and phosphorescence, represented by the conversion of the radiation absorbed by a body into radiation of a different wave length. Usually luminescence at ordinary temperature, or at moderate temperatures, that is, temperatures below incandescence, is called fluorescence or phosphorescence. Fluorescence and Phosphorescence. Fluorescence is the production of radiation from the en ...Chapter 4: Traveling Waves - 6 hit(s)
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CHAPTER IV. TRAVELING WAVES. 20. As seen in Chapter III, especially in electric power cir- cuits, overhead or underground, the longest existing standing wave has a wave length which is so small compared with the critical wave length — where the frequency becomes zero — that the effect of the damping constant on the frequency and the wave length is negligible. The same obviously applies also to traveling waves, generally to a st ...Chapter 6: Transition Points And The Complex Circuit - 6 hit(s)
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... ther words, the frequency of oscillation, as represented by q, and the rate of decay of the oscillation, as represented by the exponential function of time, must be the same throughout the entire circuit. Not so, however, with the distance variable Z; the wave length of the oscillation and its rate of building up or down along the circuit need not be the same, and usually are not, but in some sections of the circuit the wave length may be far shorter, as in coiled circuits as transformers, due to the higher L, or in c ...Lecture 2: Relation Of Bodies To Radiation - 5 hit(s)
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... may be of a single frequency, that is, a single wave; or a mixture of different frequencies, that is, a mixture of different and frequently of an infinite number of waves. Electric radiation usually is of a single frequency, that is, of the frequency or wave length determined by the constants of the electric circuit which produces the radiation, mainly the induct- ance L and the capacity C. They may, however, have different wave shapes, that is, comprise, in adolition to the fundamental wave, higher harmonics or mul ...Lecture 5: Temperature Radiation - 5 hit(s)
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... iation curve; that is, the same distribution of intensity as function of the frequency and thus the same fraction of visible to total radia- tion, that is, the same efficiency of light production. If T is the absolute temperature in deg. cent, and lw the wave length of radiation, the power radiated at wave length /„, and temperature T1 by normal temperature radiation is : b P (IJ = c,Alw % ^ , (Wien's law) ; or' r • i. * r1 P (U = c,Alw a\e V-l\ (Planck's law) ; TEMPERATURE RADIATION. 75 where a = 5 for norm ...