27 ) น้ำมันที่ลอยอยู่บนผิวน้ำ จะมอง

27) floating oil on the surface of the water, there will be visible in various colors. Reflection and refraction. The reflection and diffraction Reflection and interference Reflections and polarization28) color of the stripe on a bubble caused by the phenomenon, which is an important part. Reflection of light. Refraction of light. Diffraction of light. Interference of light.

27) the oil floating on the surface. Will see a different color Due to the reflection and refraction , reflection and diffraction, reflection and interference reflection and polarization 28) light colored stripe. Seen on the bubble phenomenon has caused a significant reflection of the light refraction , diffraction of light interference of light.