Ultra Violet VS Infrared Markings - Know what your buying
Written by: Andrew A 5/3/19 for http://www.howtomarkcards.com
The Color spectrum can get confusing for anyone. You have to know your markings. I would like to say that Howtomarkcards sells INFRARED Sunglasses / other devices for markings that specializes in Infrared markings (IR marked cards). There are competitors out there that list UV markings, be careful.. these markings show up under black light! So lets get into the light spectrum:
From left to right measured in Nano meters - UV (Ultra Violet) is below 400 Nano meters and can be considered invisible to the naked eye. But with UV, a black light will expose the markings showing a luminous affect on the markings (glow). Then around 400 - 800 Nano meters is regular vision. This vision can be seen by anyone and makes up of all the colors in the spectrum that the human eye can see without aid. After that, the next phase is Infrared Rays which range from above 800 Nano meters. This range cannot be seen by other lighting (such as a black light) or any other sort of lighting. The only way to see Infrared "colors" is to aid your eye by using a filter. The filter is dark purple/blue. By seeing through this filter your eyes will be allowed to see the infrared colors.
From left to right measured in Nano meters - UV (Ultra Violet) is below 400 Nano meters and can be considered invisible to the naked eye. But with UV, a black light will expose the markings showing a luminous affect on the markings (glow). Then around 400 - 800 Nano meters is regular vision. This vision can be seen by anyone and makes up of all the colors in the spectrum that the human eye can see without aid. After that, the next phase is Infrared Rays which range from above 800 Nano meters. This range cannot be seen by other lighting (such as a black light) or any other sort of lighting. The only way to see Infrared "colors" is to aid your eye by using a filter. The filter is dark purple/blue. By seeing through this filter your eyes will be allowed to see the infrared colors.