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Electromagnetic wave transmitted

Electromagnetic waves transmit energy as well. The average intensity I (in watts per square meter) is proportional to the average squared electric field ... [Pg.44]

Figure 16.6 Schematic of changes that occur to an electromagnetic wave transmitted through a solid with (a) n = 2 and q, = 0. Note the halving in wavelength. Since Oq = 0, there is no loss in intensity or energy of the wave as it passes through the solid. (b) Here n = 2 and Oa = 0.4. The sample absorbs a portion of the energy of the incident wave, and the intensity of the transmitted wave is thereby reduced. Since n = 2. the wavelength in the solid is again half that in vacuum. Figure 16.6 Schematic of changes that occur to an electromagnetic wave transmitted through a solid with (a) n = 2 and q, = 0. Note the halving in wavelength. Since Oq = 0, there is no loss in intensity or energy of the wave as it passes through the solid. (b) Here n = 2 and Oa = 0.4. The sample absorbs a portion of the energy of the incident wave, and the intensity of the transmitted wave is thereby reduced. Since n = 2. the wavelength in the solid is again half that in vacuum.
Some crystals polarize radiation electromagnetic waves transmitted through the crystal have electric field vectors that aU he in the same plane. What property of these crystals permits this ... [Pg.552]

Radiation. All materials radiate thermal energy in the form of electromagnetic waves. When this radiation falls on a second body it may be partially reflected, transmitted, or absorbed. It is only the fraction that is absorbed that appears as heat in the body. [Pg.381]

Electricity is generated and transmitted in power lines at a frequency of 60 Hz (1 Hz = 1 cycle per second). Determine the wavelength of the electromagnetic waves generated by the passage of electricity in power lines. [Pg.717]

All bodies with a temperature above absolute zero radiate heat in the form of electromagnetic waves. The radiation may be transmitted, reflected, or absorbed by matter, the fraction absorbed being transformed into heat. Radiation is of great importance at very high or very low temperatures and under circumstances in which the other modes of heat transmission are suppressed. Although the heat losses can, in some cases, equal the losses by natural convection, the mechanism is, from the standpoint of pharmaceutical processing, least important and needs only brief consideration. [Pg.3869]

Radiation Energy transmitted in the form of electromagnetic waves or subatomic particles. [Pg.44]

When radiation hits a body, some of it will be reflected, some absorbed and some transmitted. These portions are represented by the reflectivity r, the absorptivity a, and the transmissivity r. These three dimensionless quantities are not purely properties of the irradiated material, they also depend on the kind of radiation which strikes the body. Of main influence is the distribution of radiation over the wave length spectrum of the electromagnetic waves incident on the material. However it can always be said that... [Pg.26]

The doped (CH), with electron acceptor or donor such as AsF5,12, or Na, shows electric conductivity of 101 103 S cm-1 (Shirakawa et al., 1977 Chiang et al., 1977, 1978) and, hence, the electromagnetic wave of the frequencies in the IR regime becomes unable to transmit the doped (CH), due to the skin effect (e.g., Slater and Frank, 1947). At a slight... [Pg.264]


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