Experimental method: Take an ordinary laser light source (children often play with infrared light) or a flashlight (it is best to add a proper amount of milk to the water and mix it evenly) and shoot the light into the water. You will find that the light in the water travels in a straight line.
2. Experimental purpose: To explore and understand the reflection of light.
Experimental methods: ① See your own image on the calm water surface in the washbasin, that is, use a flat mirror to image, according to the principle of light reflection.
(2), put the washbasin in the sun, at a certain angle can feel very dazzling, indicating that the sun is reflected into people's eyes.
3. Experimental purpose: To explore and understand the refraction of light.
Experimental method: ① Put the water into the washbasin, and find that the bottom of the washbasin becomes shallow, indicating that the light is refracted.
When we put our hands into the water in the washbasin, we can find that our hands are "broken", which is caused by the refraction of light.
The above hopes have some hope for you. Talk more when you have time!