Far infrared thermal radiation is indirect from the sun. This part of energy is thermal energy, which is absorbed by the object after being irradiated by the sun. Its wavelength range is 3-40 microns.
In summer, outdoor roads and buildings emit far-infrared thermal radiation under the sunlight, which is one of the main heat sources from outdoor.
Is there far infrared thermal radiation in the room?
Yes, indoor far infrared thermal radiation from heating, household appliances, sunlight after the furniture, stove and human body, so that winter from the main indoor heat source.
How does far infrared heat radiation penetrate glass?
Far infrared thermal radiation cannot be directly transmitted through ordinary glass, but can only be absorbed or reflected by glass.When the glass absorbs this energy, it heats up and loses this energy by convection with the air and by radiating heat to the sides.
How to distinguish far infrared heat radiation, near infrared radiation?
The near-infrared radiation comes directly from the sun, which is not very hot, but can be converted into heat when it is absorbed by an object.
Far infrared thermal radiation, as a result of solar conversion or artificial production, is itself heat.Looking at the road in the summer, you can see the heat wave rising from the ground (that is, the solar energy is being converted into heat radiation).Winter near the heating, you can directly feel the heat radiation.
