Physics Learning Tool

Electromagnetic Spectrum Explorer

Slide across radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Explore wavelength, frequency, energy, uses, and safety across the electromagnetic spectrum.

Big idea: As wavelength gets shorter, frequency and photon energy get higher. That is why gamma rays are much more energetic than radio waves.
Radio Waves
Microwaves
Infrared
Visible Light
Ultraviolet
X-rays
Gamma Rays
Wavelength1 m
Frequency300 MHz
EnergyLow
c = f × λc is the speed of light, f is frequency, and λ is wavelength.

Radio Waves

Long wavelength, low frequency, low energy. Used in broadcasting and communication.

Real-life uses

Radio broadcasting, TV signals, mobile communication, and astronomy.

Examples

Radio towers, walkie-talkies, and wireless communication.

Safety meter

Generally low energy. Still, strong sources should be handled responsibly.

Visible light zoom

Visible light is the small part of the electromagnetic spectrum that human eyes can see.

Red Light

Wavelength about 700 nm. Used in traffic lights, red lasers, and sunsets.

Frequency about 428 THz.

What students should notice

Wavelength

Radio waves have long wavelengths. Gamma rays have extremely short wavelengths.

Frequency

Frequency increases as wavelength decreases because c = f × λ.

Safety

High-energy waves can damage living cells, so they must be used carefully.

Practice keywords

Use this tool to explore the electromagnetic spectrum, wavelength, frequency, visible light, X-rays, and gamma rays.

electromagnetic spectrumradio wavesvisible lightultravioletX-raysgamma rays