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.

Autonomous sensory meridian response

Autonomous sensory meridian response (ASMR) is a euphoric experience characterized by a static-like tingling sensation on the skin that typically begins on the scalp and moves down the back of the neck and upper spine, precipitating relaxation.

Overview

Definition

Autonomous Sensory Meridian Response (ASMR) signifies the subjective experience of 'low-grade euphoria' characterized by 'a combination of positive feelings, relaxation, and a distinct static-like tingling sensation on the skin'. It typically begins 'on the scalp' before moving 'down the spine' to the base of the neck, sometimes spreading 'to the back, arms and legs as intensity increases', most commonly triggered by specific acoustic and visual stimuli including the content of some digital videos, and less commonly by intentional attentional control.

Origins of the name

The term 'Autonomous Sensory Meridian Response' (ASMR) was coined on 25 February 2010 by Jennifer Allen, an electrical engineering and computer science graduate from the University of Southern Maine in the introduction to a Facebook Group she founded entitled the 'ASMR Group'.

Let's Play

Let's play may refer to:

Special edition

The terms special edition, limited edition, and variants such as deluxe edition, collector's edition or expanded edition, are used as a marketing incentive for various kinds of products, originally published products related to the arts, such as books, prints, video games or recorded music and films, but now including cars, fine wine, and whisky, among other products. A limited edition is restricted in the number of copies produced, although in fact the number may be very low or very high. A special edition implies there is extra material of some kind included. The term is frequently used on DVD film releases, often when the so-called special edition is actually the only version released.

Collector's edition

Collector's edition may just be another term for special edition. It may also refer to books in special limited and numbered editions, sometimes hand-bound, and signed by the artist and containing one or more original works or prints produced directly from their work and printed under their supervision.

No Man's Sky

No Man's Sky is an upcoming adventure survival video game developed and published by the indie studio Hello Games. Players are free to explore the entirety of a procedurally generated deterministic open universe, which includes over 18 quintillion (1.8×10¹⁹) planets, many with their own set of flora and fauna. By exploring, players will gain information about the planets that they can submit to The Atlas, a universal database that can be shared with other players of the game. Players also gain materials and blueprints to upgrade their character's equipment and purchase a variety of starships, allowing them to travel deeper into the center of the galaxy, interact in friendly or hostile manners to computer-controlled space-faring factions, or trade with other ships.

Some activities will draw the attention of Sentinels which will attempt to kill the player-character for killing too many lifeforms or draining too many resources from these planets. Players participate in a shared universe, with the ability to exchange planet coordinates with friends, though the game will also be fully playable offline; this is enabled by the procedural generation system that assures players will find the same planet with the same features, lifeforms, and other aspects once given the planet coordinates, requiring no further data to be stored or retrieved from game servers.