Answer :
Final answer:
The experimental setup involves a light source, a colloidal sulphur solution, and an observation screen. It demonstrates how shorter wavelengths scatter more effectively, making the sky blue and the sun appear red during sunsets. This phenomenon is explained by Rayleigh scattering principles.
Explanation:
Experimental Set-Up for Observing Light Scattering
To demonstrate the scattering of light in a colloidal solution of sulphur and explain why the sky appears blue and the sun appears red during sunrise and sunset, we can create a simple experimental setup. Below is a neat and labelled diagram of this experiment.
Diagram Description
- Light Source: A lamp to represent sunlight.
- Colloidal Solution: A container holding the colloidal sulphur solution.
- Observation Screen: A white screen or paper to observe the scattering effect.
Explanation of Results
When light from the lamp passes through the colloidal solution, shorter wavelengths (violet and blue light) scatter more than the longer wavelengths (red light) due to Rayleigh scattering. This scattering causes the sky to appear blue since the blue light is scattered in all directions. During sunrise and sunset, the light has to travel through more atmosphere, scattering the shorter wavelengths out of the direct line of sight and allowing the longer wavelengths, mainly red, to dominate the view, making the sun appear red.
Learn more about Light Scattering here:
https://brainly.com/question/9922540
