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电视机作为普及型家用电器,已进入寻常人家,丰富多彩的电视节目,让我们时刻感受着现代生活的气息,口味人生,享受现代科技带给我们的生活乐趣。电视机集中了大量的科技知识,中学物理有若干关于电视机的题目。1在电视机显像管中,从电子枪射出的电子在2X10~4V的高压下被加速,并且?
As a popular type of household appliances, televisions have entered ordinary people’s homes. With their rich and varied television programs, we have always felt the breath of modern life, the taste of life, and the enjoyment of modern life. TV sets have a lot of scientific and technological knowledge and secondary school physics has a few questions about television. 1 In a TV picture tube, the electrons emitted from the electron gun are accelerated at a high pressure of 2×10~4V, and?