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用医院里给病人输液用的一次性透明塑料输液管经过简单加工,可制成一根效果很好的导光管。用于光导纤维的演示。一、制作截取输液管一段,约0.4米长,用清水冲洗干净。用注射器向输液管内灌满四氯化碳液体,不能有气泡。一端用6.3V 微形指示灯泡堵封,另一端用一小段细玻璃棒堵封即成,如附图.若无微形灯泡,两端各用一小段细玻璃棒堵封亦可.四氯化碳也可用酒精代替,只是导光长度应短些.演示时点亮灯泡,可见光沿导光管传到另一端.
With the hospital to the patient infusion disposable transparent plastic infusion tube through simple processing, can be made into a very good light guide. Demonstration of optical fibers. First, making a section of the interception of the infusion tube, about 0.4 meters long, rinse with water. Use a syringe to fill the infusion tube with carbon tetrachloride liquid, without bubbles. 6.3V micro-light bulbs with one end of the plug, the other end with a small section of thin glass rod plug Serve, as shown in the figure. If there is no micro-bulb, both ends of each with a small section of glass rods can be blocked. Carbon can also be replaced by alcohol, but the light guide should be shorter length. When the demonstration light bulb, visible light along the light guide to the other end.