A practical exploration of how a full-spectrum-modded DSLR sees the world, with many side-by-side examples of the same subjects seen in visible light, full-spectrum, and also pure infrared. Some lurking invisible things are made visible as well.
I was unexpectedly gifted a Geiger counter for Christmas one year. Over the next few months, I looked for sources of ionizing radiation in my daily life, and found a few surprising functions of the Geiger counter along the way.