Waves & Electromagnetic Spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes visible light, infrared, ultraviolet, X-rays, and radio waves.

Front

What is frequency in the context of waves?

Back

Frequency is the number of cycles a wave completes in one second, measured in Hertz (Hz).

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive peaks or troughs in a wave, usually measured in meters.

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 visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be detected by the human eye, typically ranging from 400 to 700 nanometers in wavelength.

Front

What are infrared waves?

Back

Infrared waves are electromagnetic waves with wavelengths longer than visible light but shorter than microwaves, typically ranging from 700 nanometers to 1 millimeter.

Front

Can humans see infrared waves?

Back

No, infrared waves are not visible to the human eye.

Front

What are night vision goggles used for?

Back

Night vision goggles are devices that allow users to see in low-light conditions by amplifying available light, including infrared radiation.

Front

What is the relationship between frequency and wavelength?

Back

Frequency and wavelength are inversely related; as the frequency of a wave increases, its wavelength decreases, and vice versa.

Front

What is the range of the ultraviolet spectrum?

Back

The ultraviolet spectrum ranges from about 10 nanometers to 400 nanometers in wavelength.