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Pyrography or pyrogravure is the free handed art of decorating wood or other materials with burn marks resulting from the controlled application of a heated object such as a poker. It is also known as pokerwork or wood burning. [1] The term means "writing with fire", from the Greek pyr (fire) and graphos (writing). [2]
Older clear-glass Pyrex manufactured by Corning, Arc International's Pyrex products, and Pyrex laboratory glassware are made of borosilicate glass. According to the National Institute of Standards and Technology , borosilicate Pyrex is composed of (as percentage of weight): 4.0% boron , 54.0% oxygen , 2.8% sodium , 1.1% aluminum , 37.7% silicon ...
A pyre (Ancient Greek: πυρά, romanized: purá; from πῦρ (pûr) 'fire'), [1] [2] also known as a funeral pyre, is a structure, usually made of wood, for burning a body as part of a funeral rite or execution. As a form of cremation, a body is placed upon or under the pyre, which is then set on fire.
Flash powder of any formulation should not be mixed in large quantities by amateur pyrotechnicians. Beginners should start with sub-gram quantities, and refrain from making large devices. Flash powder should only be made at the site at which it will be used. Additionally, the mixture should be made immediately before use.
Once the pyre is ablaze, the lead mourner and the closest relatives may circumambulate the burning pyre one or more times. The ceremony is concluded by the lead cremator, during the ritual, is kapala kriya , or the ritual of piercing the burning skull with a stave (bamboo fire poker) to make a hole or break it, in order to release the spirit.
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A burning glass or burning lens is a large convex lens that can concentrate the Sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning mirrors achieve a similar effect by using reflecting surfaces to focus the light. They were used in 18th-century chemical studies for burning materials ...
She tried the Australian NGO several times; her calls went straight to voicemail. She tried the director’s secretary. “Me, ah, Monica here,” she said, sliding from Tok Pisin into English. “A woman has been held hostage, and they are preparing to burn her maybe tomorrow or tonight. … The police and the team in Hagen are not responding. …