Electromagnetic waves are energy transmitted through space via electric and magnetic field oscillations. Infrared light is used in night-vision devices, ultraviolet light is crucial for various daily life functions, and photon energy can be calculated using Planck's equation.
Electromagnetic waves are energy transmitted through space as periodic oscillations of electric and magnetic fields. They travel at the speed of light in a vacuum and include various forms like microwaves, visible light, and gamma rays.
The electromagnetic radiation used by soldiers in night-vision devices to detect objects in the dark is infrared light.
Ultraviolet light is important in daily life for reasons such as vitamin D synthesis in the skin, disinfection purposes, and materials analysis.
To calculate the energy of a photon of light rays with a wavelength of 700 nm, you can use Planck's equation E = hc/λ, where h is the Planck constant (6.626 x 10^-34 J s), c is the speed of light, and λ is the wavelength.
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