Vehicle horn

A vehicle horn is a sound-making device in an automobile, truck, or other vehicle. The vehicle operator uses the horn to warn others of the vehicle's approach or presence, or to call attention to some hazard. Automobiles, trucks, ships, and trains are required by law in some countries to have horns. Bicycles in many areas are also legally required to have an audible warning device, but not universally, and not always a horn.

Types

Bicycle

Bicycles often have a classic bulb horn, operated by squeezing a rubber bulb attached to a metal horn. Squeezing the bulb forces air through a steel reed located in the throat of the horn, making it vibrate, producing a single note. The flaring horn matches the acoustic impedance of the reed to the open air, radiating the sound waves efficiently, making the sound louder. Other types of horns used on bicycles include battery-operated horns (sometimes even car horns on 12-volt circuits are incorporated), and small air horns powered by a small can of compressed gas.

18 Months

18 Months is the third studio album by Scottish DJ and record producer Calvin Harris. It was released on 26 October 2012 by Columbia Records. The album includes the singles "Bounce", "Feel So Close", "Let's Go", "We'll Be Coming Back", "Sweet Nothing", "Drinking from the Bottle", "I Need Your Love" and "Thinking About You". All eight of the aforementioned singles, along with "We Found Love" (featuring Rihanna), reached the top 10 of the UK Singles Chart, making 18 Months the first album in history to spawn nine top-10 singles.

This is Harris's first studio album where he does not regularly provide the vocals on his songs, instead producing the music and having guest singers sing for him (save for "Feel So Close" and "Iron" with Dutch DJ Nicky Romero), as Harris stated in November 2010 he would not be singing on his songs any more.

18 Months debuted atop the UK Albums Chart, earning Harris his second consecutive number-one album in the United Kingdom. The album had sold over 815,636 copies in the UK as of November 2014. It has also sold more than 25 million singles worldwide.

Devolution

Devolution is the statutory granting of powers from the central government of a sovereign state to govern at a subnational level, such as a regional, local, or state level. It is a form of decentralization. Devolved territories have the power to make legislation relevant to the area.

Devolution differs from federalism in that the devolved powers of the subnational authority may be temporary and ultimately reside in central government, thus the state remains, de jure unitary. Legislation creating devolved parliaments or assemblies can be repealed or amended by central government in the same way as any statute.

Federal systems, or federations, differ in that state or provincial government is guaranteed in the constitution. Australia, Canada, India, the United States have federal systems, and have constitutions (as do some of their constituent states or provinces). They also have territories, with less power and authority than a state or province. Other examples of federations include Germany, Mexico, Brazil, Russia and Switzerland.

Devolution (disambiguation)

Devolution is the transfer of powers from a central government to a regional or a constituent national government.

Devolution, Devolve, or Devolved may refer to:

Devolution (band)

Devolution is a US based industrial metal band established by Mike Garrett, later recording under the pseudonym of Mykill Mayhem. The first release from Devolution, entitled "Cerebrequiem", was in the genre of death metal and was released in 1996, featuring session musicians assembled from Mykill's previous band, Astaroth. Singer Larry Sapp (also a member of national recording artist Brutality) performed vocals, and Tony Laureano (also a member of Malevolent Creation, Dimmu Borgir, and Angelcorpse, and several other national recording artists in the death metal genre) lent his talents in recording the drums for the CD. Another death metal album was written, but technical difficulties and Laureano's touring schedule with Nile prevented this album from being released.

The next release was written and recorded in 1999, entitled, Self-Made Monster. This release was in the vein of the industrial metal genre, and was more well-received than the previous release. "Death's Shadow" was the first single to be promoted, and charted at number 1 on mp3.com for two months for the industrial genre from January 2000 to March 2000, with the second single, "Crack Rocks In The Engine Block" charting at number 2 in industrial charts, and the third single, "Flesh", charting in the top 10 in industrial charts on mp3.com, simultaneously.