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Haidinger fringes are fringes localized at infinity. Also known as fringes of equal inclination, these fringes result when light from an extended source falls on a thin film made of an optically denser medium. These fringes indicate the positions where light interferes, emerging from the medium at an equal angle. [1]
Haidinger's brush, more commonly known as Haidinger's brushes is an image produced by the eye, an entoptic phenomenon, first described by Austrian physicist Wilhelm Karl von Haidinger in 1844. Haidinger saw it when he looked through various minerals that polarized light. [1] [2] Many people are able to perceive polarization of light. [3]
Mallotus repandus is an evergreen vine that may reach up to 20 m (66 ft) long and a stem diameter of up to 22 cm (8.7 in). [3] [4] [5] It is the only Mallotus species to grow as a liana.
A plant which completes its life cycle (i.e. germinates, reproduces, and dies) within two years or growing seasons. Biennial plants usually form a basal rosette of leaves in the first year and then flower and fruit in the second year. bifid Forked; cut in two for about half its length. Compare trifid. bifoliate
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Codariocalyx motorius (though often placed in Desmodium [1]), known as the telegraph plant, dancing plant, or semaphore plant, is a tropical Asian shrub in the pea family (Fabaceae), one of a few plants capable of rapid movement; others include Mimosa pudica, the venus flytrap and Utricularia. The motion occurs in daylight hours when the ...
Chiliotrichum diffusum is a small, much-branched shrub growing to a height of about 1.5 m (5 ft). It resembles a rosemary bush with aromatic greyish-green foliage. The leaves are elliptical or lanceolate, dark green above and hairy beneath.
Unprocessed asafoetida in a jar and as a tincture. Asafoetida (/ æ s ə ˈ f ɛ t ɪ d ə /; also spelled asafetida) [1] is the dried latex (gum oleoresin) exuded from the rhizome or tap root of several species of Ferula, perennial herbs of the carrot family.