Final answer:
Any object with a temperature above absolute zero emits electromagnetic radiation. This radiation varies in amount based on the object's temperature and emissivity, represented by the Stefan-Boltzmann law.
Step-by-step explanation:
All objects with a temperature greater than 0 Kelvin emit electromagnetic radiation. According to the Stefan-Boltzmann law, the energy flux (F) from a blackbody is proportional to the fourth power of its absolute temperature (T), represented by the equation F = σAT4, where σ is the Stefan-Boltzmann constant, A is the surface area, and T is the absolute temperature in Kelvin. Objects with different emissivities (e), such as a tungsten light bulb filament (e ≈ 0.5) or carbon black (e ≈ 0.99), emit different amounts of radiation, but all release some level of electromagnetic energy.
Note that hotter objects radiate more power across all wavelengths. For example, hotter stars emit more energy at every wavelength compared to cooler stars. This radiation includes a broad range of wavelengths, meaning that objects essentially emit photons in all colors, representing different parts of the electromagnetic spectrum.