24 Polarisation is a phenomenon associated with a certain type of wave.Which condition must be fulfilled if a wave is to be polarised? D A It must be a light wave. B It must be a longitudinal wave. C It must be a radio wave. D It must be a transverse wave. 相关知识点: 试题...
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An electromagnetic wave is a transverse wave. NB: The wave is said transversal, if the energy moves perpendicularly to the direction of wave movement (movement of the arm, shaking the rope or the energy of a rock falling into the water). The wave is called longitudinal, if the energy ...
b) Longitudinal Wave: This is another important variation of a wave. Here, the wave particles vibrate to and fro in the direction of the propagation of wave/ energy. There is a zero-degree angle formed between the wave particles and the energy particles. It can also be put as the displac...
collagen in the targeted area. Apart from keeping the skin hydrated, this treatment also helps to lighten PIH, also known as pimple marks. An added advantage of RF Micro-needling is its longitudinal action which specifically corrects the damaged skin cells without affecting the adjacent healthy ...
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wavelength of a transverse wave = distance between any two consecutive crests or consecutive troughs. wavelength of a longitudinal wave = total length of a pair of successive compression and rarefaction. In general wavelength of a wave is the distance between two consecutive points in the same pha...
CONSTITUTION:For a parabolic antenna 2, a first primary radiator 8 is equipped with a longitudinal beam tilt angle and a lateral beam angle. Therefore, when controlling the elevation angle and azimuth angle, the first primary radiator 8 directs the correspondent geostationary satellite. In such a...
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