personal+history
131History of Greenland — Hunting and whaling have always been important ways to make a living on Greenland. One of the animals found here is the polar bear, which is on the coat of arms of the Danish royal family The history of Greenland is the history of life under… …
132History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
