My Documents\What is IR

None of creature in the Universe may move, live, or keep alive without being benefited by Solar radiation energy directly or indirectly. This energy includes at least the Ultraviolet, Visible and Infrared Rays: among them, Infrared ray is the major parts that provides thermal energy which may be subdivided into the so-called Short(near), Middle, Long(far) wave bands, according to different wave length. Characteristic of Infrared has been gradually recognized by people after great improvements of Science Technology made in radio-spectrometer, Infrared Thermometer, Infrared Absorption Spectrometer, etc., in recent centuries.

The Invisible Infrared wavelength locate within the range of 0.72 micron ~ 1000 micron, right-in-between Visible Rays and TV relay Microwave. The visible spectrum are Electromagnetic waves in the range between 0.22 micron and 0.72 micron. The following diagram shows these Electromagnetic waves, classified by wave length.

The ability of Sunlight for heating bodies comes mostly from Infrared Rays and Visible rays, The thermal absorption force of the target body may increase sharply in the case that the frequency or molecular vibration within the body is exactly the same with at approaching to that of the Radiated Infrared Rays.

It is well understood that the heat transfer performed in three manner namely, Conduction, Convection and Radiation. Among them Conduction and Convection bear considerable heat loss due to heat resistance of media and result in a lower heat efficiency than Radiation. The advent of metallic oxide ceramics and a high efficiency Infrared emitter receives people's great attention and expectancies.Infrared Ray is so far fastest and most efficient heating and drying method among the above-mentioned heat transfer

Where conventional sauna use hot air to transfer heat, Infrared heat is directly transmitted onto objects. This allows an in-depth heat in a more pleasant climate, providing more health advantages and fewer contraindications.
Our natural supplier of Infrared heat is the Sun. If we put a thermometer in directly sunlight it will indicate too high a temperature. In shaded areas the thermometer shows the correct temperature. The temperature of the air, however, is the same both in the shade and in direct sunlight.

1. Stefan-Boltzmann's equation establishes relation between total radiation energy of a black body and its temperature as;
Great energy at long wave side found by sages;
2.Planck's theory predicts the radiant energy distribution of a black body at a specified temperature;

Where
T=absolute temperature
=wave length'
=Stefan-Boltzmann's constant.

It is understood according to left figure that the energy of long wave side is about 3 times that of shorter wave side.

When a vibrating molecule is exposed to Infrared rays at a specified wavelength, energy will be greatly absorbed to consequently produce drastic molecular vibration and result in a high efficiency internal heating process