This science experiment aims to explore the reason behind the color of sunsets and to understand the physics of light and atmospheric conditions that lead to this phenomenon.
From the last experiment, we know that when light (representing the sun) passes through a clear fluid (representing air) holding small particles (representing dusts), blue is scattered more than most other colors.
That’s why when we look at the sky during the day, we can see a blue tint.
Besides moving a flashlight around, sunset colors can also be created when white light travels for a long distance through a medium filled with small particles, here are two ways you can create a homemade sunset.
Let's make this homemade sunset.
- white soap / milk powder
- a flashlight that emits white light (I used TaoTronics LED light bulb)
- a rectangular clear glass container or a long clear drinking glass
- adult supervision
- Fill the glass with water.
- Dissolve a little bit of soap in the water to get a cloudy solution.
- In a dark room, point the flashlight at the cloudy solution from one end of the container.
- Observe the solution to see a hint of blue color near the light. The solution's color changes to yellow and then orange as you farther away from the light source.