Different between infrared and altraviolt?
Infrared and ultraviolet are both forms of electromagnetic radiation, but they have different properties and effects on the human body. Here are the main differences between the two:
1. Wavelength: Infrared radiation has longer wavelengths than ultraviolet radiation. Infrared radiation has wavelengths ranging from about 700 nanometers (nm) to 1 millimeter (mm), while ultraviolet radiation has wavelengths ranging from about 10 nm to 400 nm.
2. Energy: Ultraviolet radiation has higher energy per photon compared to infrared radiation. This higher energy can cause damage to living tissues, such as sunburns and DNA damage, whereas infrared radiation is generally not harmful to the body.
3. Source: Infrared radiation is emitted by warm objects, such as the sun, fire, or human bodies. Ultraviolet radiation is mainly emitted by the sun, but it can also be emitted by certain artificial sources like germicidal lamps and tanning beds.
4. Perception: Infrared radiation is not visible to the human eye, as its wavelengths are longer than the visible light spectrum. However, we can perceive it as heat. On the other hand, a small portion of ultraviolet radiation, called UVA, is faintly visible to some people, but most of it is invisible to humans.
5. Uses: Infrared radiation is used in various applications such as night vision cameras, remote controls, thermal imaging, and heating systems. Ultraviolet radiation is used in applications like sterilization, curing of materials, forensic analysis, and sun tanning.
It's important to note that both infrared and ultraviolet radiation can have harmful effects with excessive exposure, so it's crucial to take proper precautions and limit direct exposure to the body.