What is the name for the portion of the electromagnetic spectrum that includes wavelengths from 700 nanometers to 1 millimeter?

The portion of the electromagnetic spectrum that includes wavelengths from 700 nanometers to 1 millimeter is known as the infrared band. This range is situated just beyond the visible light spectrum, with wavelengths longer than visible light but shorter than those of radio waves. The infrared band is commonly associated with heat radiation, as many objects emit energy in this range, which is why it is utilized in various applications including thermal imaging and remote sensing.

The visible band, while it encompasses wavelengths from about 400 to 700 nanometers, does not extend into the infrared range. The ultraviolet band is situated on the spectrum at wavelengths shorter than visible light, while the radio wave band encompasses much longer wavelengths beyond the infrared. Thus, infrared is the only correct classification for the specified range of wavelengths in the question.