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A Foldscope is an optical microscope that can be assembled from simple components, including a sheet of paper and a lens. It was created by Manu Prakash and designed to cost less than one USD to build. It is a part of the "frugal science" movement which aims to make cheap and easy tools available for scientific use in the developing world. [2]
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Mardi Gras papier-mâché masks, Haiti. Papier-mâché (UK: / ˌ p æ p i eɪ ˈ m æ ʃ eɪ / PAP-ee-ay MASH-ay, US: / ˌ p eɪ p ər m ə ˈ ʃ eɪ / PAY-pər mə-SHAY, French: [papje mɑʃe] - the French term "mâché" here means "crushed and ground" [1]) is a versatile craft technique with roots in ancient China, in which waste paper is shredded and mixed with water and a binder to produce ...
The papier-mâché technique of using paper pulp for making decorative objects was first brought to Kashmir in the 14th century by Mir Sayyid Ali Hamadani, a Sufi mystic, who arrived to Kashmir along with his followers, many of whom were craftsmen. These craftsmen used hand-made paper pulp from Iran and Central Asia. [2]
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Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...
Diagram of a simple microscope. There are two basic types of optical microscopes: simple microscopes and compound microscopes. A simple microscope uses the optical power of a single lens or group of lenses for magnification. A compound microscope uses a system of lenses (one set enlarging the image produced by another) to achieve a much higher ...
Polarizing microscope operating principle Depiction of internal organs of a midge larva via birefringence and polarized light microscopy. Polarized light microscopy can mean any of a number of optical microscopy techniques involving polarized light. Simple techniques include illumination of the sample with polarized light.
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