BandVisibleFrequency5.00×10¹⁴ HzWavelength600 nmPhoton energy2.07 eVWave speed3.00×10⁸ m/s

Electromagnetic Spectrum

Fields · frequency · photons · matter

Student Mode

Investigation

Mission: sweep frequency and connect every spectrum band to wavelength and photon energy.

Log frequency5.00×10¹⁴ Hz

Field amplitude60%

Polarization angle0°

Medium

Target material

Simulation speed1.0×

Live measurements

Wavelength600 nm

Photon energy2.07 eV

Period2.00 fs

Transmission100%

Current observation

Visible light is one narrow part of the electromagnetic spectrum.

Frequency and wavelength history

frequencywavelength

Camera

Zoom1.00×

Interactive spectrum lesson

Ten synchronized chapters.

Step 0 of 100%

What to watch: Start when ready.

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Language and voice

Language

Voice source

Voice

Chapters

Learning objectives

Describe electromagnetic waves as coupled electric and magnetic fields.
Relate frequency, wavelength, period, speed, and photon energy.
Order the seven major spectrum bands.
Predict how media change speed and wavelength while frequency remains fixed.
Compare interactions and applications across the spectrum.

Key science

In vacuum, wave speed is approximately 3.00 × 10⁸ meters per second. Wavelength equals speed divided by frequency. Photon energy equals Planck's constant multiplied by frequency.

Suggested experiments

Sweep slowly from radio to gamma rays.
Rotate polarization and watch the field plane rotate.
Move from vacuum to glass and observe wavelength compression.
Compare approximate transmission through water, tissue, metal, and lead.

Applications and safety

Radio supports communication; microwaves support radar and heating; infrared maps heat; visible light enables vision; ultraviolet drives fluorescence; X-rays image dense structures; gamma rays support medicine and astronomy. High-energy ionizing radiation requires controlled shielding.

Spectrum quiz

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