Fundamentals of light

Front

Illuminance is measured in __________

Back

lumen per square metre

Front

What is a property of a transparent object?

Back

Almost all of the light rays that reach it pass through it.

Front

What color has the shortest wavelength, or the highest frequency?

Back

violet

Front

A light year is...

Back

The distance light can travel in a year.

Front

If the frequency of a wave decreases, the wave’s __________

Back

wavelength increases.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second.

Front

What is refraction?

Back

The bending of light as it passes from one medium to another.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light, while refraction is the bending of light.

Front

What is the electromagnetic spectrum?

Back

The range of all types of electromagnetic radiation.

Front

What is the relationship between wavelength and frequency?

Back

They are inversely related; as wavelength increases, frequency decreases.