Visualize E and B fields of an EM wave in 3D. Adjust frequency, wavelength, and polarization. Explore the EM spectrum.
The 3D view places the electric field, magnetic field, and travel direction in one coordinate scene, then lets you vary frequency, wavelength, and polarization to see how the wave's spacing and transverse orientation change. It is suited to an idealized electromagnetic plane wave and can relate a chosen setting to its region of the electromagnetic spectrum. The usual surprise is that frequency and wavelength are not separate free properties in vacuum: their product is the speed of light, so raising one requires lowering the other.
The field scene represents an ideal transverse wave. The electric field and magnetic field point across the propagation axis, remain perpendicular to each other, and reach corresponding phases together. One complete spatial repetition along the travel direction is the wavelength. Frequency instead describes how many complete oscillations pass a fixed location per second.
Polarization is read from the path traced by the electric-field vector at a fixed location. A vector confined to one transverse line is linearly polarized. A constant-magnitude vector rotating in the transverse plane is circularly polarized, while unequal rotating components trace an ellipse. In the plane-wave view, the magnetic field follows the corresponding perpendicular orientation.
An ideal electromagnetic wave in vacuum obeys frequency times wavelength equals c, the speed of light. Frequency counts temporal cycles, while wavelength measures spatial separation between equal phases. If frequency increases, the same propagation speed permits less distance per cycle, so wavelength decreases. In a material, use that material's wave speed rather than c.
No. Polarization describes how the electric-field direction evolves in the plane perpendicular to propagation. Frequency describes how quickly the field repeats, and spectrum regions are organized primarily by frequency or corresponding vacuum wavelength. You can therefore compare polarization states without changing spectrum region, provided the frequency remains unchanged.
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