Measuring tall items or buildings is possible for you to do, even if you don't have a ladder. But how? In this experiment, you will be using shadow heights created by the sun to measure! You will ...

THIS note describes a simple optical microscope shadow technique which permits measurement to be made of the heights of small objects such as particles, spores, steps on surfaces, etc., and also ...

“The results were excellent as the projected area of each tree was measured with 97% accuracy and minimum deviations on height data and estimated volume were observed in the studied fields”, explains ...

Every now and then, a new map changes the way we view our planet. This is one of those maps. The map above shows the height of Earth’s forests, from stubby saplings to timbers towering more than 50 ...