Cave

A cave or cavern is a hollow place in the ground, especially a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground. The word cave can also refer to much smaller openings such as sea caves, rock shelters, and grottos.

Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.

Types and formation

The formation and development of caves is known as speleogenesis. Caves are formed by various geologic processes and can be variable sizes. These may involve a combination of chemical processes, erosion from water, tectonic forces, microorganisms, pressure, and atmospheric influences.

It is estimated that the maximum depth of a cave cannot be more than 3,000 metres (9,800 ft) due to the pressure of overlying rocks. For karst caves the maximum depth is determined on the basis of the lower limit of karst forming processes, coinciding with the base of the soluble carbonate rocks.

Cave, Lazio

Cave is a town and comune in the Latium region of Italy, 42 kilometres (26 mi) southeast of Rome. As of 2011 its population was of 10,421.

History

The town was mentioned first in 998 AD, and was later a fief of the Colonna family. In 1482 it was besieged by Pope Sixtus IV and obliged to surrender. It is especially known for the Treaty of Cave, signed on 12 September 1557 by plenipotentiaries of Pope Paul IV and Fernando Álvarez de Toledo, the Spanish viceroy of Naples.

Geography

Cave borders with Castel San Pietro Romano, Genazzano, Palestrina, Rocca di Cave, and Valmontone. It counts the hamlets (frazioni) of Collepalme and San Bartolomeo.

References

External links

Media related to Cave at Wikimedia Commons

Cavé

Cavé is the name of several persons:

Master

Master, masters and the Master may refer to:

Ranks and titles

List of Buffy the Vampire Slayer characters

This article lists the major and recurring fictional characters created by Joss Whedon for the television series, Buffy the Vampire Slayer. For detailed descriptions, see individual character pages.

Main characters

The following characters were featured in the opening credits of the program.

The show's titular protagonist, Buffy is "The Slayer", one in a long line of young girls chosen by fate to battle evil forces in the form of vampires and demons. The Slayer has no jurisdiction over human crime. This calling mystically endows her with a limited degree of clairvoyance, usually in the form of prophetic dreams, as well as dramatically increased physical strength, endurance, agility, intuition, and speed and ease of healing. There traditionally has been only one Slayer alive at any given moment, with a new one called upon the event of her death.

Xander is a close friend of Buffy. Possessing no supernatural skills, Xander provides comic relief as well as a grounded, everyman perspective in the supernatural Buffyverse. In another departure from the usual conventions of television, Xander is notable for being an insecure and subordinate male in a world dominated by powerful females.

Master (naval)

The master, or sailing master, was a historic term for a naval officer trained in and responsible for the navigation of a sailing vessel. The rank can be equated to a professional seaman and specialist in navigation, rather than as a military commander.

In the British Royal Navy, the master was originally a warrant officer who ranked with, but after, the lieutenants. The rank became a commissioned officer rank and was renamed to navigating lieutenant in 1867; the rank gradually fell out of use from around c1890 since all lieutenants were required to pass the same exams.

When the United States Navy was formed in 1794, master was listed as one of the warrant officer ranks and ranked between midshipmen and lieutenants. The rank was also a commissioned officer rank from 1837 until it was replaced with the current rank of lieutenant, junior grade in 1883.

Royal Navy

In the Middle Ages, when 'warships' were typically merchant vessels hired by the crown, the man in charge of the ship and its mariners, as with all ships and indeed most endeavours ashore, was termed the Master; the company of embarked soldiers was commanded by their own Captain.

Turncoat

A turncoat is a person who shifts allegiance from one loyalty or ideal to another, betraying or deserting an original cause by switching to the opposing side or party. In political and social history, this is distinct from being a traitor, as the switch mostly takes place under the following circumstances:

Historical context

Even in a modern historical context "turncoat" is often synonymous with the term "renegade", a term of religious origins having its origins in the Latin word "renegare" (to deny). Historical currents of great magnitude have periodically caught masses of people, along with their leaders, in their wake. In such a dire situation new perspectives on past actions are laid bare and the question of personal treason becomes muddled. One example would be the situation that led to the Act of Abjuration or Plakkaat van Verlatinghe, signed on July 26, 1581 in the Netherlands, an instance where changing sides was given a positive meaning.