Light Waves - All Chapters

Front

What is light?

Back

Light is a form of energy that travels in waves and can be perceived by the human eye.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from about 400 nm (violet) to 700 nm (red).

Front

What happens when light hits a surface?

Back

When light hits a surface, it can be reflected, absorbed, or transmitted depending on the properties of the material.

Front

What is reflection of light?

Back

Reflection is the bouncing back of light waves when they hit a surface that does not absorb the light.

Front

What is absorption of light?

Back

Absorption is the process by which a material takes in light energy, converting it to other forms of energy, such as heat.

Front

What is transmission of light?

Back

Transmission is the passing of light through a material without being absorbed.

Front

What is infrared light?

Back

Infrared light is a type of electromagnetic radiation with wavelengths longer than visible light, often associated with heat.

Front

How do we perceive color?

Back

We perceive color based on the wavelengths of light that are reflected off an object and detected by our eyes.

Front

What is the role of pigments in color perception?

Back

Pigments are substances that absorb certain wavelengths of light and reflect others, determining the color we see.