Ember From Wikipedia, the free encyclopedia For other uses, see Ember (disambiguation). Look up ember in Wiktionary, the free dictionary. Embers of coal A bonfire in rural Australia, with a large number of embers being blown by the wind. An ember is a glowing, hot coal made of greatly heated wood, coal, or other carbon-based material that remain after, or sometimes precede a fire. Embers can glow very hot, sometimes as hot as the fire which created them. They radiate a substantial amount of heat long after the fire has been extinguished, and if not taken care of properly can rekindle a fire that is thought to be completely extinguished and can pose a fire hazard. In order to avoid the danger of accidentally spreading a fire, many campers pour water on the embers or cover them in dirt. They are often used for cooking, such as in charcoal barbecues. This is because embers radiate a more constant form of heat, as opposed to an open fire which is constantly changing along with the heat it radiates. An ember is usually formed when a fire has only partially burnt a piece of fuel, and there is still usable chemical energy in that piece of fuel. Often this happens because the usable chemical energy is so deep into the center that air (specifically oxygen) does not reach it, therefore not causing combustion (carbon-based fuel + O2 → CO2 + H2O + C + other chemicals involved). The reason that it continues to stay hot and does not lose its thermal energy quickly is because combustion is still happening at a miniature scale. The small yellow, orange and red lights often seen among the embers are actually combustion. There just is not enough combustion happening at one time to create a flame. Once the embers are completely 'burned through', they are not carbon as is commonly believed (carbon burns, and is not normally left behind), but rather various other oxidized minerals like calcium and phosphorus. At that point they are normally called ashes. See: Wood ash for more on the residue that is left. Embers play a large role in forest fires. Since embers are typically burnt leaves and thus small and light, they can be blown away by the wind. During a large fire, with the right wind conditions, embers can be blown far ahead of the fire front, starting spot fires hundreds of metres away. One of the initial stages of defending against a bushfire is dubbed the "ember attack", in which embers will bombard the house, starting small fires in wooden structures.[1] References[edit] ^ "Protect Your Property - Make your property safe from bushfire" . Australian Country Fire Authority. Archived from the original on 2008-07-22. Retrieved 2008-07-25. See also[edit] Spark, an airborne ember Wikimedia Commons has media related to Category:Embers. [hide] v t e Firelighting Campfire Bonfire List of firelighting topics Components Ember Firewood Spark Tinder Wood ash Wood fuel Topics Autoignition temperature Combustion Friction fire Minimum ignition energy Smouldering Early starters Burning glass (Solar Spark Lighter) Fire piston Fire plough Fire-saw Fire striker Flint Hand drill Bow drill Pump drill Modern starters Chisquero Black match Electric match Ferrocerium Lighter Other equipment Char cloth Feather stick Fire pan Fire pit Fire ring Matchbook Matchbox Punk Tinderbox Torch Related articles Control of fire by early humans Native American use of fire Outdoor cooking Pyrolysis Survival skills Portal icon Fire portal Categories: Fire Navigation menu Create accountLog inArticleTalkReadEditView history Search Main page Contents Featured content Current events Random article Donate to Wikipedia Interaction Help About Wikipedia Community portal Recent changes Contact page Tools Print/export Languages Bikol Central Brezhoneg Català Deutsch Español Français Ido Bahasa Indonesia Italiano Lumbaart Magyar Norsk bokmål Português Русский Tagalog اردو Edit links This page was last modified on 18 October 2013 at 03:50. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. Privacy policyAbout WikipediaDisclaimersContact WikipediaDevelopersMobile viewWikimedia Foundation Powered by MediaWiki