Definition: Electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm

Alright class, settle down, let’s take a look! Today we’re tackling ‘infrared,’ it’s quite a word, you see. Let's break it down, nice and slow, for clarity! The dictionary tells us, with a helpful plea: “Electromagnetic radiation…that’s the key!” It’s light, but not like what we can see , A hidden spectrum, wild and free. Longer than the colors of the rainbow bright, But shorter than microwaves – it's a curious sight! We’re talking wavelengths, you understand? Between 700 nanometers, across the land… And one millimeter, that’s the upper bound, A range of light we can’t see around. Think about heat lamps, warm and grand, They give off infrared – a radiant strand! Animals use it too, to sense their prey, Detecting warmth in a shadowy way. So remember this: Infrared's a name, For light beyond our visible game! Do you have any questions for me? Let’s discuss and see!