The portion of the electromagnetic spectrum that produces radiant energy is sometimes referred to as electromagnetic waves. It is not visible to the human eye.
The electromagnetic wave associated with radiant heat rays is Infrared (IR) wave.
It is the radiation whose wavelength falls in the band
of the electromagnetic spectrum referred to as "heat".
Infrared Rays
Light and heat are the same stuff; electromagnetic energy. The difference is in the wavelength of the energy; heat has longer wavelengths than light. (It's all one broad spectrum from radio to heat to light to x-rays to gamma rays to cosmic rays; all electromagnetic energy.
Energy from the Sun reaches Earth as radiation from various parts of the electromagnetic spectrum. Some of this energy . Some of this energy is converted to heat. Some remains as visible light.
Light waves are energy, and are a form of electromagnetic radiation. That makes them similar to radio waves (which have a lower frequency) and X-rays (which have a higher frequency).
Thermonuclear fusion in the core of the star heats the material of the star. A series of complex energy transfer mechanisms transport the heat from the core to the photosphere of the star. The photosphere then emits electromagnetic radiation.
Solar Fusion, the conversion at high temperature and pressure of hydrogen and other gases into radiant heat and gamma radiation.
Radio waves(:From Rafaelrz: Electromagnetic radiation is the propagation of vibrating electric and magnetic fields in the form of waves. Electromagnetic radiation has wave properties and has a whole series of frequencies. Visible light is only a small part of the whole spectrum ( The electromagnetic radiation spectrum ), from the wavelength of about 0.40 to 0.76 microns. Other radiations that conform this spectrum are; gamma radiation, x-rays, ultraviolet radiation, infrared radiation, microwaves, radio waves.The term 'radiant energy' or 'radiant heat' is frequently used to refer to 'thermalradiation', which is the range of the electromagnetic spectrum with wavelengthfrom about 0.1 to 100 microns. Notice that the spectrum of light lies in the spectrum of thermal radiation.And so this radiation is responsible for heat transferbetween bodies at different temperatures separated by vacuum space (or transparent medium) . This is the radiation mechanism of heat transfer, being the other two important ones conduction and convection.
Radiant heat (electromagnetic waves) does not require a medium. Sunlight, infrared light, microwaves are all radiant heat in the form of electromagnetic radiation.
Infrared waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices.
Infrared waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices.
In general, radiant heat is heat energy that is transferred through electromagnetic radiation in the form of light. We usually refer to it as thermal radiation. Much of the heat that is radiated this way is propagated in the form of infrared radiation, which is light just below the optical spectrum.
Radiant energy
radiation
Heat energy
For A+, it's Radiant Energy.
infrared
infrared waves
Radiant heat is when thermal energy is converted to electromagnetic energy. The movement of atoms and molecules generates electric and magnetic fields. Photons are emitted and carry (transfer) the energy. This is called thermal radiation. A less strict meaning is the heating of objects, like walls , floors etc., to transfer heat into an area.