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Cyanotype. The cyanotype (from Ancient Greek: κυάνεος, kyáneos 'dark blue' and τύπος, týpos 'mark, impression, type') is a slow-reacting, economical photographic printing formulation sensitive to a limited near ultraviolet and blue light spectrum, the range 300 nm to 400 nm known as UVA radiation. [1]
Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form. Since its inception, clip art has evolved to include a ...
Tigers are said to have directly killed more people than any other wild mammal. In most areas, they avoid humans, but attacks are a risk wherever people coexist with them. Dangerous encounters are more likely to occur in edge habitats between wild and agricultural areas.
e. A chemist (from Greek chēm (ía) alchemy; replacing chymist from Medieval Latin alchemist) [1] is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities ...
Coupon. In marketing, a coupon is a ticket or document that can be redeemed for a financial discount or rebate when purchasing a product . Customarily, coupons are issued by manufacturers of consumer packaged goods [1] or by retailers, to be used in retail stores as a part of sales promotions. They are often widely distributed through mail ...
Adduct. In chemistry, an adduct (from Latin adductus 'drawn toward'; alternatively, a contraction of "addition product") is a product of a direct addition of two or more distinct molecules, resulting in a single reaction product containing all atoms of all components. [1] The resultant is considered a distinct molecular species.
Scrapbooking is a method of preserving, presenting, and arranging personal and family history in the form of a book, box, or card. Typical memorabilia include photographs, printed media, and artwork. Scrapbook albums are often decorated and frequently contain extensive journal entries or written descriptions.
The conversion of ethanol to ethylene is a fundamental example: CH 3 CH 2 OH → H 2 C=CH 2 + H 2 O. The reaction is accelerated by acid catalysts such as sulfuric acid and certain zeolites. These reactions often proceed via carbocation]]ic intermediates as shown for the dehydration of cyclohexanol. Some alcohols are prone to dehydration.