SunCalc

Measuring Up: How to Calculate the Size of Objects in Open Source Material

Measuring Up: How to Calculate the Size of Objects in Open Source Material

Unsure When a Video or Photo was Taken? How to Tell by Measuring the Length of Shadows

SunCalc

Unsure When a Video or Photo was Taken? How to Tell by Measuring the Length of Shadows

Using the Sun and the Shadows for Geolocation

Using the Sun and the Shadows for Geolocation