If you’re hunting for the best night vision scope, the first decision isn’t brand - it’s technology: digital night vision (needs ambient light and/or an IR illuminator) versus thermal (detects heat ...

In the 1930s, primitive devices were invented to capture heat and make all heated objects visible in the dark. Almost 100 years later, these devices became modern thermal imagers, which have become ...

Add Yahoo as a preferred source to see more of our stories on Google. Aurora Expedition guides will show guests how to use thermal imaging cameras to monitor polar ice caps (Joe Muise) Passengers can ...