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Gurzil Dispels the Darkness

Subject: Religion

(Libya) Gurzil, the sun god, was worshiped among the Huwwara of Tripolitania well into the eleventh century, long after the Arab conquest. This deity was a protector, a guide, ...

Lowell, Percival

Lowell, Percival   Quick reference

A Dictionary of Scientists

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology
Length:
388 words

...little to improve the visual appearance of the planets because of the constantly shifting terrestrial atmosphere. It was not until the Martian surface was mapped by the Mariner and Viking spacecraft in the 1960s and 1970s that the idea of artificial canals could be definitely dispelled. Lowell was more successful in his work on a trans-Neptunian planet. Even making full allowances for the disturbing effects of Neptune, the orbit of Uranus still was not free from anomalies. Lowell thought that this could be due to an unknown Planet X still further out in space....

Anderson, Carl David

Anderson, Carl David   Quick reference

A Dictionary of Scientists

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology
Length:
343 words

...or ‘yukon’. However, this identification proved to be premature, as its interaction with nucleons was found to be so infrequent that it could not possibly perform the role described by Yukawa . From 1938 the particle became known as the meson, and the confusion was partly dispelled in 1947 when Cecil Powell discovered another and more active meson, to be known as the pi-meson or pion to distinguish it from Anderson's mu-meson or...

Brunel, Isambard Kingdom

Brunel, Isambard Kingdom   Quick reference

A Dictionary of Scientists

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology
Length:
596 words

...steam crossing had been accomplished by the American Savannah in 1819 using steam in combination with sail. Conventional wisdom held that to cross the Atlantic on steam alone would require so much coal as to leave no room for freight. Brunel calculated otherwise and dispelled this myth with his Great Western ( 1837 ; 2340 tons), a timber ship driven by paddles. It crossed the Atlantic in 15 days with 200 tons of coal unused in its bunkers. Brunel went on to build the equally revolutionary Great Britain ( 1843 ; 3676 tons) with an iron hull...

Carabidae

Carabidae   Quick reference

A Dictionary of Zoology (4 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Science and technology, Life Sciences
Length:
130 words

...Tiger beetles ( Cicindela species, which some authorities classify as a family, Cicindellidae) are thought to be the fastest-running land beetles, with speeds of almost 2.4 km per hour. Bombardier beetles ( Brachinus species) deter attackers with puffs of caustic chemicals, dispelled audibly from the abdomen. There are 25 000 species, distributed world-wide. ...

step-recovery diode

step-recovery diode   Quick reference

A Dictionary of Electronics and Electrical Engineering (5 ed.)

Reference type:
Subject Reference
Current Version:
2018

...and are immediately available for conduction when reverse bias is applied. When the diode is switched from forward to reverse bias the diode conducts in the reverse direction for a short time interval then the current is abruptly cut off when all the stored charges have been dispelled. The diode therefore remains in a low-impedance state until the cut-off occurs. The reverse voltage then builds up rapidly at a rate determined by the reverse junction capacitance and the external circuit. The cut-off occurs in the range of picoseconds and results in a...

population genetics

population genetics   Reference library

The Oxford Companion to the History of Modern Science

Reference type:
Subject Reference
Subject:
Science and technology, History of Science
Length:
1,454 words

...Room group of Thomas Hunt Morgan . Their experimental results showed how continuous hereditary variation could be explained by discontinuous variation produced by small genetic mutations. The Biometric-Mendelian debate had been settled, but entrenched conceptions proved hard to dispel. In 1908 an English mathematician, G. H. Hardy , and a German physician, Wilhelm Weinberg , independently derived a simple yet crucial quantitative rule, expressing the idea that gene frequencies, or proportions, would remain constant unless acted upon by external forces. The...

shamans

shamans   Reference library

The Oxford Companion to the Body

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Life Sciences
Length:
994 words

...a mystical geography. Certain currents in modern medicine have initiated a renewal of focus on the powers of the imagination to heal the ailments of the body. Traditional shamans are thought to perform cures ‘through the mind’, by various ritualized, symbolic actions designed to dispel sickness by mimetic means. Thus, techniques and phenomona in contemporary medicine such as hypnosis , autogenics, placebo response, and imaging, which stress the effects of mental or emotional states on physical illness or well-being, are occasionally referred to as a...

body odours

body odours   Reference library

The Oxford Companion to the Body

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Life Sciences
Length:
1,630 words

...exhalations, that to breathe it was to inhale a dangerous, perhaps fatal, poison’. Previously, ‘healthy’ body odours had been believed to protect against disease. Now virtually all body odours were suspected of being pathogenic. In the late nineteenth century this notion was dispelled by a new scientific paradigm which held that germs, rather than odours, caused disease. Nonetheless, the campaign to cleanse the body of dirt and ill odours continued, as these became closely associated both with disease-causing germs and with an ‘unclean’, immoral lifestyle....

disability

disability   Reference library

The Oxford Companion to the Body

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Life Sciences
Length:
1,651 words

...of need, can help with prediction of problems, and can give measures of outcome and output. Any system of assessment needs to be reliable, valid, sensitive to change, acceptable, relevant, realistic, and practical to use. Perceptions There is a strong need to combat bias and to dispel preconceptions in any review of disability. The disabled want the focus of their social relationships and medical interventions to be on their capabilities as far as that is reasonably possible. They wish to be accepted within society on an equal footing with equal rights....

orgasm

orgasm   Reference library

The Oxford Companion to the Body

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Life Sciences
Length:
1,578 words

...If a woman could not move her seat of excitation to her vagina, she would only wind up frigid. Meanwhile, Freud argued that the very transfer of excitation from clitoris to vagina over the course of a woman's maturation left her prone to hysteria . Kinsey's studies did much to dispel the vaginal-orgasm dogma of Freud. Indeed, Kinsey, who saw vaginal orgasm as a ‘biological impossibility’, took Freud to task for leaving thousands of women in a well of frustration and shame. Masters and Johnson's 1966 tome, Human Sexual Response , and The Hite Report ...

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