There is no such thing as “black light wavelength”—so why do black T-shirts, black crayons, and black marking pens look black? Investigate a variety of black ink markers, and find out why they look ...

A tweet with 45,000 likes and more than 31,000 retweets says, "If you’re an absentee voter in Virginia use a black pen only." We verified that is false.

What makes this new tablet different from most is that instead of an LCD or AMOLED screen, it has a black and white E Ink display. The Onyx BOOX Tab8 was announced this week for the Chinese market ...

UV-reactive ink looks cool, but are black light tattoos safe? Bustle chatted with tattoo artist Adam Suerte to get the scoop on glow-in-the-dark body art.

Created with special ink, they glow in the dark under UV light — so, do black light tattoos cost more than regular tattoos? Well, unfortunately yes — they do tend to be slightly more expensive.

LaNasa said he purchased his black-light ink from a reputable company 10 years ago and hasn't had any problems with it. He won't reveal his source because he doesn't want other artists to have it.

He got his brother György involved, and he developed a more viscous ink. Bíró patented the pen in Britain in 1938, but World War Two forced the Jewish brothers to flee to Argentina in 1941.