Linked from
The 138 pages that link to Electromagnetic radiation, each with the reason it gives.
Gravitational waveCompared with: Unlike light, gravitational waves interact extremely weakly with matter and pass through most intervening material.
Kirchhoff's circuit lawsCompared with: Radiating circuits cannot always be modeled as instantaneous lumped networks.
AcousticsCompared with: Unlike sound, electromagnetic radiation can travel through a vacuum.
SoundCompared with: Unlike sound, electromagnetic waves can travel through a vacuum.
Sound waveCompared with: Unlike sound, electromagnetic waves do not require a material medium.
Electromagnetic interferenceCompared with: Radiation is a physical form of energy; it becomes interference when it disrupts equipment.
Matter waveCompared with: Unlike a matter wave, it is a field disturbance rather than an amplitude for material particles.
Longitudinal waveCompared with: Electromagnetic waves in vacuum are transverse, unlike ordinary sound waves.
Solar energetic particleCompared with: Solar eruptions emit radiation as well as particles, but the two travel and interact differently.
Electrostatic forceCompared with: Changing fields can propagate as radiation, unlike the static interactions described here.
Mechanical waveCompared with: Unlike a mechanical wave, it does not require a material medium.
OrgoneCompared with: Orgone was described as radiation, but it has no established place in electromagnetic physics.
Acoustic techniquesCompared with: Unlike electromagnetic sensing, acoustic methods require a material medium.