There's no such thing as an "invisible light spectrum" in the traditional sense. The light spectrum refers to the entire range of electromagnetic radiation, including visible light and invisible forms like:

* Infrared (IR): Heat radiation, used in remote controls, thermal imaging, and night vision.

* Ultraviolet (UV): Causes sunburns and can damage DNA, but also used for sterilization and medical treatments.

* X-rays: Used in medical imaging and security scanners.

* Gamma rays: Highly energetic radiation, used in medicine and for sterilizing food.

* Radio waves: Used for communication, broadcasting, and radar.

* Microwaves: Used for communication, cooking, and radar.

While these invisible forms of radiation are part of the electromagnetic spectrum, they are not considered a "spectrum" on their own. The term "spectrum" generally refers to the range of visible light, which we perceive as different colors based on their wavelengths.

Here's a simple explanation:

Imagine a rainbow. It's a beautiful display of colors that our eyes can see. Those colors represent a small portion of the entire electromagnetic spectrum. The rest of the spectrum, the invisible parts, exist beyond the visible range.

So, while we talk about invisible forms of radiation, there is no "invisible light spectrum" in the way we understand the term "spectrum" when referring to visible light.