IR/vis/UV

The London skyline and a streetlamp in three wavelengths, combined into a single colour image. Red is infrared, green is visible light and blue is UV. Bright red trees result from their high IR reflectivity, whilst the yellow of the streetlamp glass comes from its opacity in the UV.

View the individual channels here: https://500px.com/photo/124994267/ir-r-g-b-uv-by-andrew-steele