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随着航天技术不断发展,人们已从广播电视等信息工具中熟知了“失重”这个物理现象。但对于在地球上发生的失重现象,由于其发生的时间极其短促,往往只有一眨眼功夫,因此在失重状态下物体运动状况往往被有些人凭主观臆断而错误地加以认识,下面利用频闪设计一套装置,来验证几例失重运动,初窥失重现象的“庐山真面目”。在暗室的墙上挂一块黑布,墨布上端装一个电磁铁,(高地面3～4米)电磁铁与一个6伏的电源连接。实验前,把频闪光源与照相机的快门相连。光源用SB-3频闪光源(市北教学仪器厂),频率选用25赫兹。照相机用海鸥—4型,光圈用2.8,距离为3米,速度用B门。当物
With the continuous development of space technology, people have become familiar with the physical phenomenon of “weightlessness” from information tools such as radio and television. However, for the phenomenon of weightlessness occurring on the earth, due to its extremely short time of occurrence, it is often only a blink of an eye. Therefore, in the state of weightlessness, the motion of an object is often mistakenly recognized by some people by subjective judgment. The following uses strobe design. A set of devices to verify the weightlessness of several cases and to see the “beauty face” of the phenomenon of weight loss. Hang a black cloth on the wall of the dark room, and put an electromagnet on the upper end of the ink cloth. The (high ground 3 to 4 meters) electromagnet is connected to a 6-volt power supply. Before the experiment, connect the strobe light source to the shutter of the camera. The light source uses the SB-3 flash light source (Chengbei Teaching Instrument Factory) with a frequency of 25 Hz. The camera uses a seagull - type 4, an aperture of 2.8, a distance of 3 meters, and a speed of B. When things