X-ray Jar | !!link!!

Despite the sci-fi name, this isn't radioactive, and it doesn't require batteries. It is a simple, 5-minute DIY project that allows you to see the contents of a sealed container without opening it.

When you store dry goods inside (rice, beans, flour, sugar, or even hardware like nails and screws), the black paint blocks out all ambient light. The only light entering the jar comes through that thin slit. Normally, when you look at a jar of pinto beans, the light bounces off the front beans, and you can’t see past the first layer. x-ray jar

Here is how to make one, how it works, and why you need three of them in your pantry right now. An X-Ray jar is a standard glass Mason jar (or any clear glass container) that has been painted black— except for a single, narrow, unpainted vertical strip. Despite the sci-fi name, this isn't radioactive, and