Here's a breakdown of the wavelength ranges:
* Visible light: ~380 nm to ~750 nm (what humans can see)
* Near-infrared (NIR): ~750 nm to ~1400 nm
* Short-wave infrared (SWIR): ~1400 nm to ~3000 nm
* Mid-wave infrared (MWIR): ~3000 nm to ~8000 nm
* Long-wave infrared (LWIR): ~8000 nm to ~14000 nm (also known as far infrared)
So, 750 nm is the upper edge of visible light and the beginning of the near-infrared spectrum.
