The only part of the spectrum detectable by the human eye. Infrared (IR): Experienced as heat.
Because it has no mass, certain forms (like gamma rays) can penetrate much more deeply into materials than particulate radiation. The Electromagnetic Spectrum nonparticulate radiation
Used for communication (cell phones, Wi-Fi) and heating food. What is Radiation? - International Atomic Energy Agency The only part of the spectrum detectable by the human eye
Lower-energy waves that lack the power to ionize atoms but can cause thermal effects. nonparticulate radiation
Frequently used in medical imaging to view internal structures.
Nonparticulate radiation lacks mass and charge, existing purely as "packets" of energy called photons.