The Electromagnetic Spectrum: A Visual Explainer
A single labelled flowchart ordering the seven EM bands from Radio Waves to Gamma Rays by wavelength, frequency and energy, with each band's range and everyday uses.
📌 Revision Pointers
Ordering rule: as you move Radio → Gamma, wavelength DECREASES while frequency and energy INCREASE.
Seven bands in order: Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma - each with its approximate wavelength range and key uses.
Only the narrow 400-700 nm band (Visible Light) is detected by the human eye; the rest of the spectrum is invisible but exploitable (radar, medical imaging, radiotherapy, etc.).
One clean sequential diagram showing how wavelength falls and frequency/energy rise from Radio Waves through to Gamma Rays.
💭 Conclusion
A frequently tested Prelims diagram - know the band order, the wavelength/frequency/energy trend, and one standout use per band.