Viking halberd a drooping "beard". The name is from Old Norse "skegg", "beard" and "øx", "axe". The term "Viking halberd" was used to describe a find in North America in the 1995 book "Early Vikings of the New World", but it was later demonstrated to be a tobacco cutter. There has currently been, in fact, no clearly identified Viking halberd or bill found. Spears are the only type of polearms found in Viking graves. It is possible that halberds and bills were not part of Viking funerary customs, as opposed to other weapons that have been found in graves. Bills have been
Radar configurations and types Radar range and wavelength can be adapted for different surveys of bird and insect migration and daily habits. They can have other uses too in the biological field. Radar configurations and types Radar configurations and types is an article about listing the different uses of radars. Radar come in a variety of configuration in the emitter, the receiver, the antenna, wavelength, scan strategies, etc. Search radars scan great volumes of space with pulses of short radio waves. They typically scan the volume two to four times a minute. The waves are usually less than a meter long. Ships and planes