Night Vision

An LED headlight build by somebody that a) knows how to build things, and b) knows what to build. Now I have a Christmas project!

Something I didn't know: The rods in our eyes (the parts that help us see at night) are most sensitive at 507nm/blue-green. So why not build a light that puts out that frequency? Now we can see x2.5 times better. Just by changing from white to blue-green!