Spark (fire)

A spark is an incandescent particle. Such sparks may be produced by pyrotechnics, by metalworking or as a by-product of fires, especially when burning wood.

Pyrotechnics

In pyrotechnics, iron filings and metal alloys such as magnalium may be used to create sparks. The quantity and style of sparks produced depends on the composition and pyrophoricity of the metal and can be used to identify the type of metal by spark testing. In the case of iron, the presence of carbon is required, as in carbon steel — about 0.7% is best for large sparks. The carbon burns explosively in the hot iron and this produces pretty, branching sparks. The color of sparks used in pyrotechnics is determined by the material that the sparks are made from, with the possibility of adding different chemical compounds to certain materials to further influence the color of the sparks. The duration of the existence of a spark is determined by the initial size of the particle, with a larger size leading to a longer-lasting spark.

Spark

Spark may refer to:

Physical sparks

Computer science

Entertainment

Fire

Fire is the rapid oxidation of a material in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition.

Fire is hot because conversion of the weak double bond in molecular oxygen, O₂, to the stronger bonds in the combustion products carbon dioxide and water releases energy (418 kJ per 32 g of O₂); the bond energies of the fuel play only a minor role here. At a certain point in the combustion reaction, called the ignition point, flames are produced. The flame is the visible portion of the fire. Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity will be different.

Fire in its most common form can result in conflagration, which has the potential to cause physical damage through burning. Fire is an important process that affects ecological systems around the globe. The positive effects of fire include stimulating growth and maintaining various ecological systems. Fire has been used by humans for cooking, generating heat, light, signaling, and propulsion purposes. The negative effects of fire include hazard to life and property, atmospheric pollution, and water contamination. If fire removes protective vegetation, heavy rainfall may lead to an increase in soil erosion by water. Also, when vegetation is burned, the nitrogen it contains is released into the atmosphere, unlike elements such as potassium and phosphorus which remain in the ash and are quickly recycled into the soil. This loss of nitrogen caused by a fire produces a long-term reduction in the fertility of the soil, which only slowly recovers as nitrogen is "fixed" from the atmosphere by lightning and by leguminous plants such as clover.

Little Heroes

The Little Heroes were an Australian band formed in 1980 by founding mainstay Roger Hart (aka Roger Wells or Roger Hart-Wells, ex-Secret Police) on lead vocals and guitar. They released three studio albums, The Little Heroes (August 1981), Play by Numbers (August 1982) and Watch the World (September 1983). Their highest charting hit, "One Perfect Day", which was released in 1982, reached No. 12 on the Kent Music Report Singles Chart. Their other charting singles are "Young Hearts" (1982), "Watch the World" and "Bon Voyage" (both 1983). They disbanded in June 1984.

History

In 1980 The Little Heroes were formed in Melbourne from the remnants of pub rockers, Secret Police. Secret Police had formed in 1978 with Roger Hart (aka Roger Wells or Roger Hart-Wells, ex-The Cruisers) as singer-songwriter and guitarist, Bruce Pumpa on drums, and Neil Walker on bass guitar. Walker died in 1979 from leukaemia and was replaced by John Taylor (ex-Soap, Llama, Hot Rocket and Uncle Bob's Band). They were soon joined by Andrew Callender on guitar and backing vocals, and Peter Linley on saxophone. The Secret Police did not issue any records, although they posthumously contributed "Emotion" and "Everybody Looks Lonely at Night" to Missing Link Records' various artists compilation album The Melbourne Club (1981). In 1980 Hart, Pumpa and Taylor joined with David Crosbie on keyboards to start an indie pop band, The Little Heroes.

Taylor Swift

Taylor Alison Swift (born December 13, 1989) is an American singer-songwriter. Raised in Wyomissing, Pennsylvania, she moved to Nashville, Tennessee, at the age of 14 to pursue a career in country music. She signed with the independent label Big Machine Records and became the youngest songwriter ever signed by the Sony/ATV Music publishing house. The release of Swift's eponymous debut album in 2006 marked the start of her career as a country music singer. Her third single, "Our Song", made her the youngest person to single-handedly write and perform a number-one song on the Hot Country Songs chart.

Swift's second album, Fearless, was released in 2008. Buoyed by the pop crossover success of the singles "Love Story" and "You Belong with Me", Fearless became the best-selling album of 2009 in the United States. The album won four Grammy Awards, making Swift the youngest ever Album of the Year winner. Swift's third and fourth albums, 2010's Speak Now and 2012's Red, both sold more than one million copies within the first week of their U.S release. Speak Now's "Mean" won two Grammy Awards, while Red's singles "We Are Never Ever Getting Back Together" and "I Knew You Were Trouble" were successful worldwide. Swift's fifth album, the pop-focused 1989, was released in 2014 and sold more copies in its opening week than any album in the previous 12 years, making Swift the first and only act to have three albums sell more than one million copies in the opening release week. Its singles "Shake It Off", "Blank Space", and "Bad Blood" reached number one on the Billboard Hot 100. The album would go on to win three awards at the 2016 Grammys including Album of the Year making Swift the first and thus far only female artist to receive the award twice.