The three areas are used for statement of different temperature ranges, and therefore different environments in area. NIR and SWIR collectively is typically known as “mirrored infrared”, whereas MWIR and LWIR is usually known as “thermal infrared”. The plastic bag is mostly transparent to long-wavelength infrared, but the man’s glasses are opaque. The 1,530 to 1,560 nm range is the dominant spectral area for long-distance telecommunications (see Fiber-optic communication#Transmission windows). This false-color infrared area telescope image has blue, green and pink corresponding to 3.4, 4.6, and 12μm wavelengths, respectively. These lace curtains are machine washable in chilly water mild cycle, tumble dry low.