Electromagnetic Spectrum: Light Beyond Visible
draft readiness: experimental LightSpectra Both 10 min
Core demo behavior is implemented, but parity and launch-gate signoff are still pending.
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Predict
Predict
If you switch from visible to infrared observations, what kinds of objects or features might become easier to detect?
Play
Play
- Compare bands and note the wavelength/frequency scale.
- Identify at least two real-world sources or uses for different bands.
- Match bands to a type of astronomical observation.
Explain
Explain
Explain how wavelength choice changes what information you can extract from an object.
Learning goals
- Order EM bands by wavelength and frequency.
- Connect wavelength to what kinds of detectors/observations are needed.
- Explain why different bands reveal different physical processes.
Misconceptions targeted
- All telescopes see the same thing; only magnification changes.
Model notes
- Core relationships: $c=\lambda\nu$ and $E=h\nu=hc/\lambda$.
- Internal conversions use CGS constants: $c$ in $\mathrm{cm/s}$ and $h$ in $\mathrm{erg\,s}$.
- Readouts are reported in teaching-friendly units (nm/$\mu\mathrm{m}$/mm/m for $\lambda$; Hz for $\nu$; eV/keV/MeV for $E$).
About this demo
This demo helps you connect wavelength, frequency, and photon energy across the electromagnetic spectrum.
Use the slider (or band buttons) to explore orders of magnitude, then use the Convert panel to practice unit conversions.