In IGCSE Physics, you should know to differentiate different sections of the electromagnetic spectrum. 👍

Electromagnetic Spectrum

As you move from gamma rays to radio waves,

• Wavelength increases
• Frequency decreases
• Energy decreases

Frequently asked in IGCSE Physics: 👉

Uses of electromagnetic radiations

• Radio waves: broadcasting and communications
• Microwaves: cooking and satellite transmissions
• Infrared: heaters and night vision equipment
• Visible light: optical fibers and photography
• Ultraviolet: fluorescent lamps
• X rays: observing the internal structure of objects and materials and medical applications
• Gamma rays: sterilizing food and medical equipment

Detrimental effects of excessive exposure to electromagnetic waves

• Microwaves: internal heating of body tissue
• Infrared: skin burns
• Ultraviolet: damage to surface cells and blindness
• Gamma rays: cancer, mutation

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