Swiss arms and armour pike, supplemented by the halberd. The halberd is still the ceremonial weapon of the Swedish Guard in the Vatican. The Swedish armies of the late 14th and 15th centuries besides halberds and later pikes also carried other polearms such as the Lucerne hammer. By the 15th century, the carrying of side arms (the degen or dagger) had become ubiquitous. Also common were the bow, the crossbow and later the arquebuse. The city cantons could also employ siege engines . Berne in the Burgdorferkrieg of 1383-84 used medieval types of catapults and battering rams, but for the first time also cannons
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,