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Wax Fire
A wax fire is created when melted or boiling wax is doused with water. The ensuing reaction creates a large fireball or dramatically enlarges the flame of the already existing fire. Only a small amount of wax and water is needed to create a wax fire. Chemistry behind the reaction Following the basic rules of the fire triangle, for a reaction to take place, three ingredients are required: oxygen, fuel, and heat. In the case of wax melted down, only the top surface has access to oxygen, so the fire progresses slowly. When water is added to the wax, two things happen. Firstly, the water — being denser than wax — sinks to the bottom of the container. Secondly, as burning wax quickly reaches a temperature of well over 200 degrees C, the water instantly vapourises. When water changes from a liquid to a gas, there is more than a thousand-fold increase in volume. The water expands violently, and throws the hot wax layer above it into the air as small droplets. The wax now has a much big ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wax Fire
A wax fire is created when melted or boiling wax is doused with water. The ensuing reaction creates a large fireball or dramatically enlarges the flame of the already existing fire. Only a small amount of wax and water is needed to create a wax fire. Chemistry behind the reaction Following the basic rules of the fire triangle, for a reaction to take place, three ingredients are required: oxygen, fuel, and heat. In the case of wax melted down, only the top surface has access to oxygen, so the fire progresses slowly. When water is added to the wax, two things happen. Firstly, the water — being denser than wax — sinks to the bottom of the container. Secondly, as burning wax quickly reaches a temperature of well over 200 degrees C, the water instantly vapourises. When water changes from a liquid to a gas, there is more than a thousand-fold increase in volume. The water expands violently, and throws the hot wax layer above it into the air as small droplets. The wax now has a much big ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire
Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction Product (chemistry), products. 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 (physics), plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's Intensity (heat transfer), 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. Its negative effects include hazard to life and pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Triangle
The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). A fire naturally occurs when the elements are present and combined in the right mixture. A fire can be prevented or extinguished by removing any one of the elements in the fire triangle. For example, covering a fire with a fire blanket blocks oxygen and can extinguish a fire. In large fires where firefighters are called in, decreasing the amount of oxygen is not usually an option because there is no effective way to make that happen in an extended area. Fire tetrahedron The fire tetrahedron represents the addition of a component in the chemical chain reaction, to the three already present in the fire triangle. Once a fire has started, the resulting exothermic chain reaction sustains the fire and allows it to continue until or unless at leas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygen
Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is Earth's most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula . Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.Atkins, P.; Jones, L.; Laverman, L. (2016).''Chemical Principles'', 7th edition. Freeman. Many major classes of organic molecules in living organisms contain oxygen atoms, such as proteins, nucleic acids, carbohydrates, and fats, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wax Boiling
Wax burning (), also known as wax boiling, is the heating of candle wax to high temperatures in a container as a form of entertainment. Most of the time, it refers to a local tradition of Hong Kong youths during the Mid-Autumn Festival period in public parks or other such areas. One would use an empty moon cake tin as the container to bring candle wax to the boil, possibly adding newspaper scraps or other flammable fuel. Once the wax fire reaches its peak, one would pour water onto the flames thus creating spectacular sizzling and steam slopover. This practice is dangerous due to the flames' kickback and volatile amount of flowing hot wax, possibly causing third degree burns; several children have been taken to the hospital each year due to "wax burning" related injuries. The annual numbers are in decline due to legislation and public education campaigns (see below). Attitude of the Hong Kong government to wax burning As there are many revellers during the Mid-Autumn Festival ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wax Burning
Wax burning (), also known as wax boiling, is the heating of candle wax to high temperatures in a container as a form of entertainment. Most of the time, it refers to a local tradition of Hong Kong youths during the Mid-Autumn Festival period in public parks or other such areas. One would use an empty moon cake tin as the container to bring candle wax to the boil, possibly adding newspaper scraps or other flammable fuel. Once the wax fire reaches its peak, one would pour water onto the flames thus creating spectacular sizzling and steam slopover. This practice is dangerous due to the flames' kickback and volatile amount of flowing hot wax, possibly causing third degree burns; several children have been taken to the hospital each year due to "wax burning" related injuries. The annual numbers are in decline due to legislation and public education campaigns (see below). Attitude of the Hong Kong government to wax burning As there are many revellers during the Mid-Autumn Festival ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chip Pan Fire
Chromatin immunoprecipitation (ChIP) is a type of immunoprecipitation experimental technique used to investigate the interaction between proteins and DNA in the cell. It aims to determine whether specific proteins are associated with specific genomic regions, such as transcription factors on promoters or other DNA binding sites, and possibly define cistromes. ChIP also aims to determine the specific location in the genome that various histone modifications are associated with, indicating the target of the histone modifiers. ChIP is crucial for the advancements in the field of epigenomics and learning more about epigenetic phenomena. Briefly, the conventional method is as follows: # DNA and associated proteins on chromatin in living cells or tissues are crosslinked (this step is omitted in Native ChIP). # The DNA-protein complexes (chromatin-protein) are then sheared into ~500 bp DNA fragments by sonication or nuclease digestion. # Cross-linked DNA fragments associated with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boilover
file:Fettbrandsequenz.jpg, upright=1.5, Fire fighters simulating boilover to demonstrate the risks. Length of the sequence 2.4 seconds. it was 1 kg cooking oil and 1 litre of water. A boilover (or boil-over) type of fire refers to an extremely hazardous situation where an attempt is made to extinguish semi-enclosed oil or petrochemical fueled fire with water. The hazard results due to the difference in density between oil and water. National Fire Protection Association, NFPA defines boil-over as: ''An event in the burning of certain oils in an open-top tank when, after a long period of quiescent burning, there is a sudden increase in fire intensity associated with expulsion of burning oil from the tank.'' Boilover is also common in the home as a Chip pan#Fire hazard, chip pan fire when cooking. Mechanism As water is poured onto the fuel, it quickly sinks to the bottom of the container due to the water's higher density, and has little effect on extinguishing the flames on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articles Containing Video Clips
Article often refers to: * Article (grammar), a grammatical element used to indicate definiteness or indefiniteness * Article (publishing), a piece of nonfictional prose that is an independent part of a publication Article may also refer to: Government and law * Article (European Union), articles of treaties of the European Union * Articles of association, the regulations governing a company, used in India, the UK and other countries * Articles of clerkship, the contract accepted to become an articled clerk * Articles of Confederation, the predecessor to the current United States Constitution *Articles of Impeachment, Article of Impeachment, a formal document and charge used for impeachment in the United States * Articles of incorporation, for corporations, U.S. equivalent of articles of association * Articles of organization, for limited liability organizations, a U.S. equivalent of articles of association Other uses * Article, an HTML element, delimited by the tags and * Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Types Of Fire
Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Type (Unix), a command in POSIX shells that gives information about commands. * Type safety, the extent to which a programming language discourages or prevents type errors. * Type system, defines a programming language's response to data types. Mathematics * Type (model theory) * Type theory, basis for the study of type systems * Arity or type, the number of operands a function takes * Type, any proposition or set in the intuitionistic type theory * Type, of an entire function ** Exponential type Biology * Type (biology), which fixes a scientific name to a taxon * Dog type, categorization by use or function of domestic dogs Lettering * Type is a design concept for lettering used in typography which helped bring about modern textual printin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
