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Ludwig-Musser makes a line of acrylic drums called Vistalites, well known as being used by Led Zeppelin drummer John Bonham. Artificial nails in the "acrylic" type often include PMMA powder. [53] Some modern briar, and occasionally meerschaum, tobacco pipes sport stems made of Lucite. PMMA technology is utilized in roofing and waterproofing ...
Pterosaurs (informally called pterodactyls) are often called "flying dinosaurs" by popular media and the general public, but while pterosaurs were closely related to dinosaurs, dinosaurs are defined as the descendants of the last common ancestor of the Saurischia and the Ornithischia, which excludes the pterosaurs.
Oak galls and iron(II) sulfate, ingredients of iron gall ink. Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources.
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology ...
Hydrogen forms many compounds with carbon called the hydrocarbons, and even more with heteroatoms that, due to their association with living things, are called organic compounds. [43] The study of their properties is known as organic chemistry [ 44 ] and their study in the context of living organisms is called biochemistry . [ 45 ]
Of the common strong mineral acids in chemistry, hydrochloric acid is the monoprotic acid least likely to undergo an interfering oxidation-reduction reaction. It is one of the least hazardous strong acids to handle; despite its acidity, it contains the non-reactive and non-toxic chloride ion.
Implementation of the SDGs started worldwide in 2016. This process can also be called Localizing the SDGs. In 2019 António Guterres (secretary-general of the United Nations) issued a global call for a Decade of Action to deliver the Sustainable Development Goals by 2030. [112] This decade will last from 2020 to 2030.
Shrek is a 2001 American animated fantasy comedy film loosely based on the 1990 children's picture book by William Steig.Directed by Andrew Adamson and Vicky Jenson and written by Ted Elliott, Terry Rossio, Joe Stillman, and Roger S. H. Schulman, it is the first installment in the Shrek film series.