The human eye and the colorful world short 2 Flashcards
Why does the sky appear dark to passengers in airplanes ?
The sky appears dark to passengers flying at very high altitudes, as scattering is not prominent at such heights.
You might have observed that ‘danger’ signal lights are red in color. Do you know why?
The red is least scattered by fog or smoke so it can be seen in the same color at a distance.
What is white light ?
Any light that gives a spectrum similar to that of sunlight is often referred to as white light.
Who was the first to use a glass prism ?
Isaac Newton
White light is dispersed into its seven-color components by a prism. Why do we get these colors?
Different colors of light bend through different angles with respect to the incident ray, as they pass through a prism.
Which light bends the least and which light bends the most ?
The red light bends the least while the violet the most
What is dispersion ?
The splitting of light into its component colors is called dispersion.
What is the spectrum ?
The band of the colored components of a light beam is called its spectrum.
What is VIBGYOR ?
Violet, Indigo, Blue, Green, Yellow, Orange and Red.
