fatuity
发表于 2025-3-25 03:37:18
An Overview of the Theory of the Near-Zone Doppler Effect,diation as seen by the observer will be higher than that of the source (blue shift) as the source and observer approach each other and will be lower (red shift) as they get farther apart. This effect is known as the “Doppler effect” and was introduced by Christian Doppler in 1843 , .
营养
发表于 2025-3-25 09:01:15
Analysis of Channeled-Substrate-Planar Double-Heterostructure Lasers Using the Effective Index TechBecause of the rapid advancement of the manufacture of optical fibers with low loss for the transmission of analog and digital signals, research in long-life and low-threshold single-mode laser sources has increased with high intensity over the last 25 years. The realization of high data-rate channe
cacophony
发表于 2025-3-25 12:08:30
Correlation Theory of Electromagnetic Ridiation Using Multipole Expansions,le to expect that these expansions would provide a useful formalism for the solution of problems in statistical electromagnetic theory. The main theme of this chapter is the extension of multipole expansions into the realm of correlation theory. In the initial sections of this chapter, we present th
闲聊
发表于 2025-3-25 19:20:12
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裹住
发表于 2025-3-26 00:03:15
Some Methods of Reducing the Sidelobe Radiation of Existing Reflector and Horn Antennas, industry. The ever-increasing use of the electromagnetic spectrum has for some time now required methods of adapting or designing antennas to reduce the possible interference between the wanted and undesired signals. Over the years many techniques have been proposed and a number of methods have rec
sed-rate
发表于 2025-3-26 02:58:28
Group Symmetries of Antenna Arrays, introduced as natural extensions of simple geometric shapes, such as spheres or cylinders, etc. At the present time no systematic procedure exists for choosing the proper three-dimensional arrangement of radiators in space. New geometrical concepts are needed to enrich the presently available techn
LEER
发表于 2025-3-26 08:15:33
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malapropism
发表于 2025-3-26 08:33:03
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finale
发表于 2025-3-26 16:06:26
Coherence Effects in Guided Wave Optical Systems,sity in coherence properties. Thermal optical sources (heated wire filaments) radiate totally random waves which can exhibit appreciable spectral component amplitudes throughout the optical spectrum. Highly stabilized, singlefrequency lasers, on the other hand, can exhibit short-term linewidths as s
啤酒
发表于 2025-3-26 20:26:38
How Scattering Increases as an Edge Is Blunted: The Case of an Electric Field Parallel to the Edge,blems that becomes so natural to them that they may not realize until years later that they have imbibed great wisdom. Professor Papas has taught us to go back again and again to the basics, to mine them as the inexhaustible mother lode of insight. He has taught us, furthermore, to seek simple resul