Keychain

GNU Privacy Guard stores known keys on a keyring. Quinn was heating it on top of his home stove, sending a glass shard through his heart, and earning him a Darwin Award. Mac OS X uses a password storage system called Keychain. The glass bottle exploded while Mr. By analogy to the physical object, the terms keychain and keyring are often used for software that stores cryptographic keys. On November 30, 2004, 24-year-old Philip Quinn died in a lava lamp accident. Kurt Meadows is considered to have the largest collection of unduplicated keychains including 24,810 items. Because of this, users have been tempted to warm the lamp by other means, which is why the makers include a safety warning.

Items commonly attached via a keychain or keyring include:. In a sufficiently cold room, the wax may never start to flow. . This can take an hour or longer, especially if it's cold. A keychain can also be a short chain used to link together a number of keys or other items. The lamp is immobile until the liquid is sufficiently warmed by a (typically 40 watt) lamp . The chain ensures that the keys remain attached to the individual using them, makes accidental loss less likely, and saves on wear and tear on the pockets of the user. Walker sold his rights to Cressida Granger whose company Mathmos continues to make lava lamps and other related products.

The chain is often retractable, and therefore may be a nylon rope instead of an actual metal chain. In the 1990s Mr. It is usually employed by personnel whose job demands frequent use of keys, such as a security guard, prison officer, janitor, or retail store manager. The lava lamp became an icon of the 1960s, where the constantly changing, brightly-color display has been compared to the psychedelic hallucinations of certain popular recreational drugs. A keychain can also be a connecting link between a keyring and the belt of an individual. Wertheimer and his business partner Hy Spector bought the American rights to the product and began to produce it as the "Lava Lite"® via a corporation called Haggerty Enterprises and trading under the name Lava World International®. Some keychains allow one or both ends the ability to rotate, keeping the keychain from becoming twisted while the item is being used. He named it the "Astrolight" or "Astro Lamp" and presented it at a Hamburg trade show in 1965, where the entrepreneur Adolph Wertheimer noticed it.

The length of a keychain allows an item to be used easier than if connected directly to a keyring. An Englishman, Edward Craven Walker, invented the original and best-known lava lamp in the 1960s. A keychain is a small chain, usually made from metal or plastic, that connects a small item to a keyring. Chaotic behaviour makes the movement of the wax unpredictable—hence lava lamps can aid in the generation of one-time pads for cryptographic use. Whistles. Beyond certain temperature parameters, the "lava" ceases to circulate, either remaining quiescent at the bottom (too cold) or all rising to the top (too hot). Watches and stopwatches. The cycle of rising and falling wax droplets continues so long as the bottom of the container remains warm and the top of the container remains cool.

Vehicle remote keyless system. The metal coil at the bottom helps to overcome the surface tension of the individual wax droplets, causing the descending blobs to agglomerate into a single molten wax mass at the bottom of the container. USB flash drives. One mass of wax may rise as another falls. Security tokens. This process is called convection. Tools (e.g., Swiss Army knives). Near the top, away from the heat source, the wax cools and its density increases again, so it begins to fall through the liquid towards the bottom of the container again.

Thermometers (analog and digital). At this time, a portion of the wax rises towards the top of the container. Text labels. Wax at the bottom heats until it melts, and eventually becomes less dense than the liquid above it. Tape measures. The light bulb heats the container at the bottom, and due to heat exchange with the atmosphere, the container eventually dissipates the introduced heat. Religious items (e.g., crosses). This happens because the wax expands more than the liquid when heated.

Rabbit's feet. The wax is slightly denser than the liquid at room temperature, and slightly less dense than the liquid under marginally warmer conditions. Photos (photo holders). The glass bottle sits on top of the bulb, which heats its contents. Pill boxes. The lamp consists an illuminating bulb, and a glass bottle containing a transparent liquid, translucent wax, and a metallic wire coil. Personal sirens. .

Ornamental or decorative items. The gentle flow of randomly-shaped blobs of wax suggests the flowing of lava. Monkey's fist. A lava lamp is a novelty item typically used for decoration rather than illumination. Memo pads. Mace (spray).

Keyrings. Logos, slogans, or phrases. Laser pointers. Flashlights.

Electronic games. Digital sound recorders. Compasses. Bottle openers.