Principles Of Light-Electromagnetic Spectrum-Visible And Invisible Light Flashcards
The two theories of light that we primarily discuss are the ——— and ———- theories
Corpuscular and electromagnetic wave
Which theory explains how a rainbow is formed and how light is dispersed through a prism?
Electromagnetic wave theory
What is the size of a nanometer?
1 billionth of a meter
The relationship of wavelength and frequency determines the velocity or speed of light. What is the formula?
Velocity = frequency x wavelength
What is the speed of light in air?
186,000 miles per second
A single band of light from a single point on light source is called a ——
Ray
The visible spectrum is only a small portion of the electromagnetic spectrum and consists of wavelengths from ——— to ———-
380nm to 750 nm
Which category of invisible light is the major cause of skin and ocular damage?
UV-A
Which color has the longest wavelength?
Red
How is the wavelength of light measured?
From crest to crest or from trough to trough
Who introduced the electromagnetic wave theory?
Maxwell
Why do we see a banana as yellow?
Because the cones in our eyes receive the light waves. The eyes see the reflection of the color.
What does HEV stand for?
High Energy Visible
Why is the sky blue?
Because the blue wavelength scatters the most
This illustration is explained by which light theory?
Corpuscular theory
