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Montesquieu is credited with devising the basic Constitutional principle of?
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∙ 11y ago
separation and balance of governmental power.
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∙ 11y ago
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Who is known for making the world's first practical microscope by devising special lenses?
Antoni van Leeuwenhoek
What is Marie curie best known for?
Marie Curie is best known for her pioneering research, developing a theory of radioactivity, devising isotope isolation/purification methods, and for the discovery of Radium and Polonium. At the time of her research, the dangers of ionising radiation were unknown; Marie did not wear protective clothing or employ any other safety practices in her research, working out of what was essentially a shed and even carrying test tubes of radioactive material in her pockets. She developed aplastic anaemia as a result of her prolonged exposure to radiation, and died in 1934 at the age of 66.
What is the Calvin Cycle and who discovered it?
The Calvin cycle is the reaction that happens in plants during photosynthesis and carbon filtration without light. Melvin Calvin and two associates used the radio-active carbon 14 to trace the pattern of the carbon atoms during filtration.
Do butterflies use magnetism?
Monarch butterflies use magnetic compassesBy S. MiliusMonarchs can check magnetic fields as a backup to their sun compass.Built-in magnetic compasses may orient monarch butterflies during their mind-boggling, southwestern migration, according to new experiments in Kansas.The butterflies flutter up to 2,500 miles in autumn from breeding grounds in the eastern United States and Canada to a winter haven in Mexico. These millions of migrants are going to a destination not one of them has ever seen.The generation taking to the air in the fall represents the great-great grandchildren, or even more distant descendants, of the monarchs that left Mexico the previous spring. Yet the new generation returns to the same dozen or so roosting areas that their ancestors used.Previous studies showed that monarchs can orient by the sun. The new work provides the first direct evidence that monarchs can also sense directions from the magnetic field, according to Orley R. Taylor of the University of Kansas in Lawrence. He, Jason A. Etheredge of Kansas, and their colleagues describe the results in the Nov. 23 Proceedings of the National Academy of Sciences."This is not the last word," Taylor says. "What the butterflies are doing is very complicated."The researchers caught migrating monarchs in fall and released them into a tube, in which they crawled upward to a circular tabletop arena. In a room with no shielding from Earth's magnetic field, most of the butterflies took flight toward the southwest. In a shielded room, however, they flew in random directions.Next, researchers created a magnetic field oriented in the opposite direction from Earth's. Butterflies then flew northeast, as if their compasses had reversed.The team studied fall migrants because the same generation flying north in spring gets hard to handle, Taylor says. "They're completing a reproductive death run, like salmon," as he puts it. Females lay eggs daily even though their route covers 1,000 miles. By the end, "they have practically no wings left; they're crawling from plant to plant to lay eggs�it's awesome," Taylor says.Charles Walcott of Cornell University calls the monarch paper "terrific" and notes that other researchers have been stumped by the challenge of devising a way to test butterflies for magnetic orientation.For animal compasses, "we used to think there was a single secret," he says, sounding wistful. Studies now show that animals combine methods using "a Chinese-menu approach," Walcott explains. Night-migrating birds, for example, can orient by the sunset glow and star patterns as well as by the magnetic field.Kenneth P. Able of the State University of New York at Albany says he suspects that magnetic orientation "is a very widespread ability." Honeybees, some wasps, some fish, sea turtles, and even a species of mole rat can take bearings magnetically. Also, "it looks like every migratory bird you test, if you do it right, has a magnetic compass," Able says. However, he points out, discovering a compass takes the scientists just a small step toward explaining how monarchs navigate."I'm not sure anybody is ever going to answer that," says Karen S. Oberhauser, who studies monarchs at the University of Minnesota. "Insects sense the world in very different ways from humans. They use things we can't perceive, maybe even things we can't conceive."
How did newtons work support the early workers of Copernicus Kepler and gailileo?
Newton's work on planetary orbits was based on Copernicus's theory and used the details given by Kepler in the three laws of planetary motion. Newton also developed laws of motion of objects when acted on by forces, the science of dynamics. Galileo founded this science with his ideas of inertia and forces based on experiments he conducted. Galileo also had ideas about orbits but these did not contribute directly to the development of orbital theory.
Sir Henry Cole is credited with introducing the world to which popular Christmas tradition in 1843?
He is credited with devising the idea of Christmas cards, introducing the first commercial card in 1843
What is devising?
The phrase "devising strategies" means figuring out how to go about doing something, by means of a specific sequence of actions.
What is devising strategies?
The phrase "devising strategies" means figuring out how to go about doing something, by means of a specific sequence of actions.
Who are Saint Cyril and Saint Methodius?
They were brothers and 9th century missionaries. They were the principal Christian missionaries among the Slavic peoples of the Great Moravia and Pannonia, introducing Orthodox Christianity and writing to the illiterate, pagans.They are credited with devising the Glagolitic alphabet.
What is hypothesising?
Devising a theory or set of theories.
Which is not a tool of rational choice?
Devising monetary policies.
Is not a tool of a rational choice?
Devising monetary policies.
What are the release dates for The Block - 2013 Devising a plan 1-4?
The Block - 2013 Devising a plan 1-4 was released on: USA: 27 October 2013
Who was Apostles to the Slavs?
The Apostles to the Slavs were Saints Cyril and Methodius. They were two brothers who were Byzantine Christian theologians and missionaries. They are credited with devising the Glagolitic alphabet and translating the Bible into the Old Church Slavonic language, thus spreading Christianity among the Slavic peoples.
Which of the following is not a tool of rational choice?
devising monetary polices
What makes an activity monotonous?
lack of devising new ways or creativity to do it
How do you devise a play?
in my opinion the best way of devising a play is to use stimuli. this is when you have 2 or 3 objects e.g. a picture of a place, a fiscal object and a character. once you have your stimuli you can then start devising your play
