The Blue Banana (also known as the Hot Banana, Bluemerang, European Megalopolis, Manchester–Milan Axis or European Backbone) is a discontinuous corridor of urbanisation in Western Europe, with a population of around 111 million. It stretches approximately from North West England in the north to Northern Italy in the south. The curvature of this corridor (hence "banana") takes in the cities Leeds, Sheffield, Liverpool, Manchester, Nottingham, Birmingham, London, Lille, Amsterdam, The Hague, Utrecht, Rotterdam, Ghent, Brussels, Antwerp, Charleroi, Liège, Eindhoven, the Ruhr area, Düsseldorf, Wuppertal...

The cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been allocated for cellular phone use. All cellular phone networks worldwide use a portion of the radio frequency spectrum designated as ultra high frequency, or "UHF", for the transmission and reception of their signals. The ultra high frequency band is also shared with television, Wi-Fi and Bluetooth transmission. For historical reasons, radio frequencies used for cellular networks differ in the Americas, Europe, Africa and Asia. The first commercial standard for mobile connection in the United...

This list of WLAN channels is the set of legally allowed wireless local area network channels using IEEE 802.11 protocols, mostly sold under the trademark Wi-Fi. The 802.11 workgroup currently documents use in five distinct frequency ranges: 2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz, and 5.9 GHz bands. Each range is divided into a multitude of channels. Countries apply their own regulations to the allowable channels, allowed users and maximum power levels within these frequency ranges. In some countries, such as the United States, licensed Amateur Radio operators may use some of the channels at much higher...

This is a list of fish on stamps of Mongolia...

The Colline Gate (Latin Porta Collina) was a landmark in ancient Rome, supposed to have been built by Servius Tullius, semi-legendary king of Rome 578–535 BC. The gate stood at the north end of the Servian Wall, and past it were two important streets, the Via Salaria and Via Nomentana. Within this area the Alta Semita linked the Quirinal with the Porta Carmentalis. Several temples were located near the gate, including temples of Venus Erycina and Fortuna. To a person facing the gate in the 3rd century AD, the Gardens of Sallust would have been on the left, with the Baths of Diocletian on the right...

De Porta Nigra (Latijn voor 'Zwarte Poort') is veruit het bekendste monument uit de Romeinse tijd in de Duitse stad Trier. Het is de noordelijke poort in de 6418 m lange stadsmuur en werd samen met de muur tussen 160 en 200 n. Chr. gebouwd. De poort is 36 m breed, 21,5 m diep en 30 m hoog en is hiermee het grootste Romeinse bouwwerk op Duitse bodem. De poort bestaat uit op elkaar passende zandsteenblokken, zonder voegen. De stenen waren oorspronkelijk verbonden door ijzeren krammen, vergelijkbaar met het Colosseum. Door verwering en roetafzetting werden de zandsteenblokken, oorspronkelijk licht...

Kiribati ((IPA): [ˈkiːrɨbæs]?), officieel de Republiek Kiribati, is een eilandrepubliek in Oceanië. Het land ligt in de Grote Oceaan en is onderdeel van de regio's Micronesië (Gilberteilanden) en Polynesië (Phoenix- en Line-eilanden). Kiribati bestaat voor het overgrote deel uit drie uitgestrekte eilandengroepen, van het westen naar het oosten zijn dat de Gilberteilanden, de Phoenixeilanden en de meeste van de Line-eilanden. Westelijk van de Gilberteilanden ligt daarnaast nog het eiland Banaba. Van de Line-eilanden behoren Jarvis, het Kingmanrif en het Palmyra-atol niet tot Kiribati maar tot de...

The Pak 43 (Panzerabwehrkanone 43) was a German 88 mm anti-tank gun developed by Krupp in competition with the Rheinmetall 8.8 cm Flak 41 anti-aircraft gun and used during the Second World War. The Pak 43 was the most powerful anti-tank gun of the Wehrmacht to see service in significant numbers, also serving in modified form as the 8.8 cm KwK 43 main gun on the Tiger II tank, and Elefant, Jagdpanther and Nashorn tank destroyers. The improved 8.8 cm gun had a very flat trajectory out to 914 m (1,000 yd), making it easier for the gunner to hit targets at longer ranges as less corrections in elevation...

The centimetre–gram–second system of units (abbreviated CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time. All CGS mechanical units are unambiguously derived from these three base units, but there are several different ways of extending the CGS system to cover electromagnetism. The CGS system has been largely supplanted by the MKS system based on the metre, kilogram, and second, which was in turn extended and replaced by the International System of Units (SI). In many fields of science and...

A metric foot is a nickname occasionally used in the United Kingdom for a length of 300 millimetres (30 cm). The 30 cm metric ruler was of a similar length to the traditional 12-inch (one foot) ruler, so hence the term 'metric foot'. A metric foot can be divided into twelve "metric inches" of 25 millimetres (2.5 cm) each. The (short) metric foot and inch are therefore 4.8 and 0.4 millimetres (or about 1⁄60) shorter than an imperial foot and inch respectively. The term "metric foot" does not appear in any British Standard, but the construction industry uses multiples of 300 mm and 600 mm as preferred...