WORD OF THE kDAY EDUCATION PART OF SPEECH : NOUN SYLLABICATION : E-DU-CA-TION SPELL : E-D-U-C-A-T-I-O-N MEANING : Education in its general sense is a form of learning in which the knowledge, skills, and habits of a group of people are transferred from one generation to the next through teaching, training, or research. SENTENCE : Our education department has been in existence since 1983. THOUGHT OF THE DAY Education is the key to unlock the golden door of freedom. George Washington Carver The goal of education is the advancement of knowledge and the dissemination of truth. John F. Kennedy Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth. Chanakya the Tyndall effect, also known as Tyndall scattering, is light scattering by particles in a colloid or particles in a fine suspension. It is named after the 19th century physicist John Tyndall. It is similar to Rayleigh scattering, in that the intensity of the scattered light depends on the fourth power of the frequency, so blue light is scattered much more strongly than red light. An example in everyday life is the blue colour sometimes seen in the smoke emitted by motorcycles, particularly two stroke machines where the burnt engine oil provides the particles. Under the Tyndall effect, the longer-wavelength light is more transmitted while the shorter-wavelength light is more reflected via scattering. An analogy to this wavelength dependency is that longwave electromagnetic waves such as radio waves are able to pass through the walls of buildings, while shortwave electromagnetic waves such as light waves are stopped and reflected by the walls. The Tyndall effect is seen when light-scattering particulate-matter is dispersed in an otherwise light-transmitting medium, when the cross-section of an individual particulate is the range of roughly between 40 and 900 nanometers, i.e., somewhat below or near the wavelength of visible light (400–750 nanometers). It is particularly applicable to colloidal mixtures and suspensions; for example, the Tyndall effect is used commercially to determine the size and density of particles in aerosols and other colloidal matter (see ultramicroscope and turbidimeter).= John Tyndall FRS (2 August 1820 – 4 December 1893) was a prominent 19th century physicist. His initial scientific fame arose in the 1850s from his study of diamagnetism. Later he made a number of discoveries in the realms of infrared radiation and the physical properties of air. Tyndall also published more than a dozen science books, which brought state-of-the-art 19th century experimental physics to a wider audience. From 1853 to 1887 he was professor of physics at the Royal Institution of Great Britain in London.
Posted on: Sun, 29 Sep 2013 06:32:09 +0000
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