#shadow-analysis
2 writeups · all writeups
Angle of Ascent — Dating a Takeoff Photo to the Second
An aerial shot of a KLM Cityhopper lifting off an unnamed runway. Runway markings give the scale, the scale gives the airport, and Denmark's open aerial imagery archive gives a timestamp accurate to the second — enough to name the exact flight and its arrival gate.
Finding a 205-Metre Tower From Two Shadows
GEOINT with no image at all. A survey notebook, two shadow measurements, one timestamp — and enough solar geometry to pin one building in the Kalahari.