Yes, the wavelength of infrared radiation does change depending on the temperature of the environment. This phenomenon is known as thermal radiation or blackbody radiation.
According to Planck's law and Wien's displacement law, the wavelength of maximum intensity (peak wavelength) emitted by an object is inversely proportional to its temperature. As the temperature of an object increases, the peak wavelength of the emitted radiation becomes shorter, shifting towards the shorter wavelength region of the electromagnetic spectrum.
Infrared radiation refers to electromagnetic waves with longer wavelengths than visible light. It encompasses a range of wavelengths from about 700 nanometers to 1 millimeter. Within the infrared spectrum, there are different regions, such as near-infrared, mid-infrared, and far-infrared, each with its own characteristic wavelengths.
When an object is at a higher temperature, it emits a broader range of infrared wavelengths, including shorter wavelengths. As the temperature decreases, the peak of the emission spectrum shifts towards longer wavelengths. This is why hot objects, such as a glowing piece of metal or a flame, emit predominantly shorter-wavelength infrared radiation, which we perceive as heat.
In summary, the wavelength of infrared radiation does vary with temperature. Higher temperatures correspond to shorter-wavelength infrared radiation, while lower temperatures correspond to longer-wavelength infrared radiation.