A light reflection demonstration experimental device includes a water container and an object to be observed, which is characterized by: the water container is a folded tube formed by the butt of two straight barrels; the lower end of the folded tube is transparent and has a luminous body, and the upper end is an observation port; the lower side wall of the folded tube is opened with a water inlet and outlet nozzle, and the water inlet and outlet nozzle are connected with a hose, and the soft part is arranged. The other end of the tube is connected with a water tank, and the inside or outside of the transparent sealing end is provided with a light emitting body for an object to be observed. When there is no water in the tube, the luminous body can not be seen, and after adding appropriate amount of water, the luminous body becomes visible and the effect is amazing and interesting; the folded tube forms a connector with the water tank through the hose, the water surface in the tube can rise or fall at any time, and the luminous body can continuously change between \invisible\, \local visible\ and \all visible\. Without changing water, the water level can be changed many times, which is equivalent to repeated observation. Many experiments have been done to strengthen and consolidate the experimental results.
【技术实现步骤摘要】
光反射演示实验装置
本技术属于教学用具
,尤其涉及一种光反射演示实验装置。
技术介绍
现有初中物理教学,在介绍了光的折射知识之后,为加深学生印象,安排了名为“硬币隐现之迷”的小实验,在碗底放一枚硬币,把碗子移动眼睛刚巧看不到硬币的地方,保持眼睛和碗子的位置不变,请另一位同学缓慢地向碗子里倒水,当倒入的水达到一定程度后,会发现原来看不见的硬币变得能看见了,进而理解光线由水斜射到空气中的折射现象。上述实验取材简易,利于推广,但存在的问题有:一是需要两人配合,一人观察,一人缓慢倒水;二是该实验的重复性不好,若一次观察得不清楚,想再次实验及观察,需要将水倒出后重做,所有实验操作均要全部重做,浪费了较多时间,由于时间关系,教师经常不能给未观察到的学生重做实验。三是该实验效果平淡,不够惊奇有趣,不能有效地吸引学生的兴趣。
技术实现思路
本技术的目的是,提供一种光反射演示实验装置,要求观察者一个人就能操作实验全程,特别是碗里的水面要能在“上升或下降”间不断转换,于是硬币会“忽隐忽现”,从而得到惊奇而重复性极好的实验效果。本技术的技术方案是:一种光反射演示实验装置,包括盛水容器、粘贴或固定在盛水容器底部的待观察物,其特征是:所述盛水容器为由两根直筒对接形成的折形管;所述折形管的下端为透明封口端,该透明封口端由透明材料制成;所述折形管的上端开口为观察口;所述折形管下部的侧壁开孔并设有进出水嘴,所述进出水嘴上连接有软管,所述软管的另一端连接有水槽;所述透明封口端的内侧或外侧放置有用作待观察物体的发光体。所述两根直筒间的夹角要符合水中入射光线与空气中折射光线间的夹角规律,即两直筒 ...
【技术保护点】
1.一种光反射演示实验装置,包括盛水容器、粘贴或固定在盛水容器底部的待观察物,其特征是: 所述盛水容器为由两根直筒对接形成的折形管;所述折形管的下端为透明封口端,该透明封口端由透明材料制成;所述折形管的上端开口为观察口;所述折形管下部的侧壁开孔并设有进出水嘴,所述进出水嘴上连接有软管,所述软管的另一端连接有水槽;所述透明封口端的内侧或外侧放置有用作待观察物体的发光体。
【技术特征摘要】
1.一种光反射演示实验装置,包括盛水容器、粘贴或固定在盛水容器底部的待观察物,其特征是:所述盛水容器为由两根直筒对接形成的折形管;所述折形管的下端为透明封口端,该透明封口端由透明材料制成;所述折形管的上端开口为观察口;所述折形管下部的侧壁开孔并设有进出水嘴,所述进出水嘴上连接有软管,所述软管的另一端连接有水槽;所述透明封口端的内侧或外侧放置有用作待观察物体的发光体。2.如权利要求1所述的光反射演示实验装置,其特征在于:所述两根直筒间的...
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