Yes, this includes ultraviolet light.

Why? Does it also include x-rays? That’s only one step further on the electromagnetic spectrum. Seems arbitrary to stop at ultraviolet waves! Does that mean thin sheets of steel aren’t opaque? Or is the term “opaque”, without any modifiers attached, colloquially used to describe whether something permits visible light through?

For the record, they’re not opaque. The original article actually says they work better if you close your eyes.

I’m not claiming to have evidence backing me up, but I fear the idea that addiction is under your control may be higher among the educated populace may not be affected by being more highly educated because they’re bought into meritocracy and the idea of improving oneself. ‘Just do this’ platitudes etc. from the crowd that believes everything works like a controlled lab experiment they did in AP Bio