GEOLOGY

Detailed explanation-1: -The visible part of the electromagnetic spectrum only covers a small range of wavelengths, from 380 nm to 750 nm. In the electromagnetic spectrum, shorter wavelengths (from 10 nm to 380 nm) are ultraviolet (UV) and longer wavelengths (from 750 nm to 1 mm) are infrared (IR) radiation.

Detailed explanation-2: -Infrared radiation falls between visible light and microwaves on the electromagnetic spectrum. The term means “below red” (infra is “below” in Latin) because red is the longest wavelength in the visible portion of the spectrum. Infrared radiation has wavelengths between 700nm and 1mm.

Detailed explanation-3: -Infrared radiation, what we experience as heat when we hold our hand near a warm object, is somewhat longer wavelengths than visible light.

Detailed explanation-4: -Wavelength range and sources Infrared radiation (IR), also known as thermal radiation, is that band in the electromagnetic radiation spectrum with wavelengths above red visible light between 780 nm and 1 mm. IR is categorized as IR-A (780 nm-1.4 µm), IR-B (1.4-3 µm) and IR-C, also known as far-IR (3 µm-1 mm).