Viking halberd difficult to know what kind of weapon is being described in these translations, or the original texts. Many of these terms are shown below. The "atgeir" was a type of bill or halberd, from Old Norse "geirr", "spear". The "atgeirr" is thought to have been a foreign weapon and is rarely mentioned in the sagas, but is famous as the favorite weapon of Gunnar of Hlíðarendi. In Njál's saga this weapon is shown as used mostly for thrusting, but also for hewing. The "höggspjót", literally "hewing spear", takes its name from Old Norse "högg", "stroke, blow, slaughter, beheading" and "spjót",
Radar configurations and types 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 are metal, and reflect radio waves. The radar measures the distance to the reflector by measuring the time of the roundtrip from emission of a pulse to reception,