Observed arrival · 2026-09-01
Radio to Gamma, an Electromagnetic-Spectrum Instrument
An interactive physics exhibit that lets visitors explore the electromagnetic spectrum, from FM radio to gamma rays, through visual experiments and adjustable scales.
Field notes
The exhibit uses a draggable spectrum and paired controls to separate photon frequency from total delivered power, making a distinction often flattened in introductory explanations. Its examples are tied to explicit mechanisms: Snell's law and dispersion for the prism, a 1.6 micrometre CD track pitch, the 42-degree rainbow cone, and Rayleigh scattering's inverse-fourth-power relationship. The author labels the scale illustrative and asks visitors to compare disputed numbers with a textbook.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue