Light waves do not emit radiation, light waves are radiation.
Warm bodies emit infrared radiation.
Optical light
Classical they will emit electromagnetic waves (light and radio waves). Quantum effects might limit this since if the electrons are in the ground state (or all lower states are occupied) they can not emit any photons (quanta of electromagnetic waves).
All electromagnetic wave lengths (light)
Heat waves traveling at the speed of light are called RADIATION! :)
Since all such emissions are "black body radiation" (or pretty close), the correct answer is "light". All wavelengths... from the longest radio waves, to very energetic gamma radiation.
Stars emit all kinds of radiation including light waves, cosmic rays, gamma rays, and X-rays. When we look at stars, we can only see the light waves. But using cameras that can 'see' the other wavelengths, particularly X-rays, then convert them to light waves that we CAN see, we notice a lot of things that simply do not show up by looking at the stars' light waves.
Radio waves, like light, is a form of electromagnetic radiation. Other types of electromagnetic radiation include X-rays, infrared radiation, and gamma rays. All electromagnetic radiation travel at the speed of light.
ALL the radiation from the lowest frequency to the highest.
Laser light is different from ordinary light. Laser light consists of light waves that all have the same wavelength, or color. The waves are coherent, or in step. A laser is a device that produces a narrow beam of coherent light. The word laser comes from a phrase that describes how it works: light amplification by stimulated emission of radiation. Light amplification means that the light is strengthened. Stimulated emission means that the atoms emit light when exposed to electromagnetic radiation.
All objects and living things emit infrared radiation unless the object is not a black hole as well unless its temperature is not at the Absolute Zero ( I would call it an "infrared black hole") - such an object can only absorb infrared radiation.
Energy transfered in the form of electromagnetic waves is classified according to wavelength of the radiation. Radio waves, microwaves, infrared radiation, visible light, ultraviolet light, X-rays and gamma rays are all forms of electromagnetic radiation.