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1888年德国物理学家赫兹用莱顿瓶放电,让放电产生的快速交变电流通过一根导线,产生了赫兹波,这实质是一种分米波频段的电磁波辐射,从而开创了现代微波技术的起点。本世纪30年代发明了连续波发生器和空腔谐振器等,微波技术才开始迅速发展起来。美国和苏联工作者分别提出了微波热效应和非热效应学说。目前临床上主要是利用热效应诊治疾病。一微波的物理特性及生物学特性通常称频率300—300,000MH_2,波长1mm-1m 范围的高频电磁波为微波。生物医学研究中常用的频率为2450MH_2。Petersen谓微波每个光子能量在10~(-3)ev 以下,不能产生电离作用。它具有某些类似光学性质的特
In 1888, the German physicist Hertz discharged the Leyden bottle, and the rapid alternating current generated by the discharge passed through a wire to generate the Hertzian wave. This was essentially a kind of electromagnetic wave radiation in the decimeter wave band, thus creating a modern microwave technology. The starting point. Invented continuous wave generators and cavity resonators in the 1930s, microwave technology began to develop rapidly. U.S. and Soviet workers respectively proposed the microwave thermal effect and non-thermal effect theory. At present, the main clinical use of thermal effects diagnosis and treatment of diseases. The physical and biological characteristics of a microwave are generally referred to as frequencies 300-300,000 MH2, and high-frequency electromagnetic waves in the wavelength range of 1 mm-1m are microwaves. The frequency commonly used in biomedical research is 2450 MH2. Petersen said that each photon energy of the microwave is below 10~(3)ev and it cannot produce ionization. It has some special optical properties