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Author: Jean-Pierre Rozelot
Publisher: Springer Science & Business Media
ISBN: 3540878300
Category : Science
Languages : en
Pages : 266
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Book Description
The Sun and stars rotate in di?erent ways and at di?erent velocity rates. The knowledge of how they rotate is important in understanding the formation and evolution of stars and their structure. The closest star to our Earth, the Sun, is a good laboratory to study in detail the rotation of a G star and allows to test new ideas and develop new techniques to study stellar rotation. More or less massive, more or lessevolved objects, however, can have averydi?erent rotation rate, structure and history. In recent years our understanding of the rotation of the Sun has greatly improved. The Sun has a well-known large-scale rotation, which can be m- sured thanks to visible features across the solar disk, such as sunspots, or via spectroscopy. In addition, several studies cast light on di?erential rotation in the convective zone and on meridional circulation in the radiative zone of the Sun. Even the rotation of the core of the Sun can now be studied thanks to various methods, such as dynamics of the gravitational moments and of course, helioseismology, through g-modes analysis. Moreover, the magnetic ?eld is strongly linked to the matter motions in the solar plasma. The solar magnetic ?eld can be measured only at the surface or in theupperlayers.Itistheproductoftheinternaldynamoorofthelocaldynamos if they exist – in any case magnetic ?eld and rotation cannot thus be separated.
Author: Jean-Pierre Rozelot
Publisher: Springer Science & Business Media
ISBN: 3540878300
Category : Science
Languages : en
Pages : 266
Get Book Here
Book Description
The Sun and stars rotate in di?erent ways and at di?erent velocity rates. The knowledge of how they rotate is important in understanding the formation and evolution of stars and their structure. The closest star to our Earth, the Sun, is a good laboratory to study in detail the rotation of a G star and allows to test new ideas and develop new techniques to study stellar rotation. More or less massive, more or lessevolved objects, however, can have averydi?erent rotation rate, structure and history. In recent years our understanding of the rotation of the Sun has greatly improved. The Sun has a well-known large-scale rotation, which can be m- sured thanks to visible features across the solar disk, such as sunspots, or via spectroscopy. In addition, several studies cast light on di?erential rotation in the convective zone and on meridional circulation in the radiative zone of the Sun. Even the rotation of the core of the Sun can now be studied thanks to various methods, such as dynamics of the gravitational moments and of course, helioseismology, through g-modes analysis. Moreover, the magnetic ?eld is strongly linked to the matter motions in the solar plasma. The solar magnetic ?eld can be measured only at the surface or in theupperlayers.Itistheproductoftheinternaldynamoorofthelocaldynamos if they exist – in any case magnetic ?eld and rotation cannot thus be separated.
Author: Paul Alexander Gonzales
Publisher: Lippincott Williams & Wilkins
ISBN: 1975193350
Category : Medical
Languages : en
Pages : 2449
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Book Description
The first exam prep book to cover all of the most commonly tested rotations, The PA Rotation Exam Review, 2nd Edition, delivers a high-yield review in a concise, full-color format to help you make the most of your preparation for the “high yield” topics on clinical rotation exams and boost your test-taking confidence. Up-to-date coverage details essential material in Internal Medicine, Family Medicine, Pediatrics, Emergency Medicine, Psychiatry, OB/GYN, and Surgery, accompanied by 25 practice questions—with an additional 50 available online—for each rotation. Reflecting an enhanced organization, expanded images, helpful mnemonic tools, and an inclusive focus throughout, this updated 2nd Edition offers everything you need to prepare for success on test day and take a confident next step toward your career as a physician assistant.
Author: Shirlene Obuobi
Publisher: HarperCollins
ISBN: 0063209160
Category : Fiction
Languages : en
Pages : 352
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Book Description
ONE OF TEEN VOGUE'S "25 BOOKS BY BLACK AUTHORS THEY CAN'T WAIT TO READ THIS YEAR" ONE OF BETCHES' "22 BOOKS YOU NEED TO READ THIS YEAR" "As a fan of Grey’s Anatomy (and Chicago Med!), I couldn’t put down On Rotation, and you won’t be able to, either. Shirlene Obuobi makes you feel as if you’re actually right there with the lovable Angie, and I personally couldn’t get enough." —Meg Cabot, New York Times bestselling author For fans of Grey’s Anatomy and Seven Days in June, this dazzling debut novel by Shirlene Obuobi explores that time in your life when you must decide what you want, how to get it, & who you are, all while navigating love, friendship, and the realization that the path you’re traveling is going to be a bumpy ride. Ghanaian-American Angela Appiah has checked off all the boxes for the “Perfect Immigrant Daughter.” Enroll in an elite medical school Snag a suitable lawyer/doctor/engineer boyfriend Surround self with a gaggle of successful and/or loyal friends But then it quickly all falls apart: her boyfriend dumps her, she bombs the most important exam of her medical career, and her best friend pulls away. And her parents, whose approval seems to hinge on how closely she follows the path they chose, are a lot less proud of their daughter. It’s a quarter life crisis of epic proportions. Angie, who has always faced her problems by working “twice as hard to get half as far,” is at a loss. Suddenly, she begins to question everything: her career choice, her friendships, even why she's attracted to men who don't love her as much as she loves them. And just when things couldn’t get more complicated, enter Ricky Gutierrez— brilliant, thoughtful, sexy, and most importantly, seems to see Angie for who she is instead of what she can represent. Unfortunately, he’s also got “wasteman” practically tattooed across his forehead, and Angie’s done chasing mirages of men. Or so she thinks. For someone who’s always been in control, Angie realizes that there’s one thing she can’t plan on: matters of her heart.
Author: I. M. Gelfand
Publisher: Courier Dover Publications
ISBN: 0486823857
Category : Science
Languages : en
Pages : 385
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Book Description
This monograph on the description and study of representations of the rotation group of three-dimensional space and of the Lorentz group features advanced topics and techniques crucial to many areas of modern theoretical physics. Prerequisites include a familiarity with the differential and integral calculus of several variables and the fundamentals of linear algebra. Suitable for advanced undergraduate and graduate students in mathematical physics, the book is also designed for mathematicians studying the representations of Lie groups, for whom it can serve as an introduction to the general theory of representation. The treatment encompasses all the basic material of the theory of representations used in quantum mechanics. The two-part approach begins with representations of the group of rotations of three-dimensional space, analyzing the rotation group and its representations. The second part, covering representations of the Lorentz group, includes an exploration of relativistic-invariant equations. The text concludes with three helpful supplements and a bibliography.
Author: L. Mansinha
Publisher: Springer Science & Business Media
ISBN: 9401033080
Category : Science
Languages : en
Pages : 313
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Book Description
The seeds of this conference were sown with the publication by Press, in 1965, of a paper in which he suggested that the displacement field due to a major earthquake may extend over much greater distances than had been thought possible before. Later on, Mansinha and Smylie pointed out that if Press was correct then, since the redistri bution of significant quantities of mass was involved, the inertia tensor of the earth would be altered and thus cause the earth to wobble; this revived the idea that earth quakes might be the long sought source for maintaining the Chandler Wobble. They argued that since earthquakes are sudden events it should be worthwhile trying to determine if there was any correlation between sudden changes in the Chandler term of the pole path and major earthquakes. Furthermore, since displacements occur both before and after an earthquake it might be possible to obtain a few days warning of a major earthquake by making instantaneous observations of the pole path. Analysis of the data indicated some correlation but, as often happens in science in general and in geophysics in particular, the results were not conclusive because of imperfect theory and the need for more accurate determinations of the pole position. It soon became clear that a meeting between geophysicists and astronomers involved in this type of work would be of mutual benefit.
Author: Dennis D. McCarthy
Publisher: American Geophysical Union
ISBN: 0875904599
Category : Science
Languages : en
Pages : 197
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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 59. As part of the Nineteenth General Assembly of The International Union of Geodesy and Geophysics Symposium (IUGG) in Vancouver, Canada, Union Symposium U4, "Variations in Earth Rotation" was held August 18-19 1987. The Convenor was Dennis D. McCarthy, U.S. Naval Observatory with P. Paquet, Observatoire Royal de Belgique and M. G. Rochester, St. Johns University serving as co-convernors. In a session on internal structure of the Earth papers dealt with the geophysical effects on Earth rotation parameters. Mantle anelasticity increases the free core nutation (FCN) period by a few days. The period of the FCN and the amplitudes of the main nutation components are sensitive to the ellipticity of the core?]mantle boundary (CMB), and a non-hydrostatic increase of 400m in the flattening of the CMB is a possible explanation of the discrepancies from theory. An alternative suggestion rests on the subseismic description of the nutation spectrum of the stratified liquid core. Evidently new models will have to take into account contributions from the oceans, mantle anelasticity, non-hydrostatic pre-stress, CMB topography and internal core structure.
Author: Martin Katahn
Publisher: W. W. Norton & Company
ISBN: 0393342883
Category : Health & Fitness
Languages : en
Pages : 401
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Book Description
Lose those unwanted pounds and keep them off once and for all with an easy three-week diet. The Rotation Diet’s unique and simple plan varies the daily calorie intake over a three-week period, leading to an average weight loss of 13 pounds. Users who have a great deal of weight to lose may drop up to a pound per day in week one. When The Rotation Diet was first published, more than seventy thousand Nashvillians went on the diet and weighed in weekly at supermarkets. The results showed that the city became almost a million pounds lighter. This new, updated, and revised edition of The Rotation Diet offers a scientifically proven maintenance plan that requires only small changes to establish a permanently healthier lifestyle. There are tasty new recipes and menus based on USDA and HHS dietary guidelines, and numerous examples show how people who have changed their lives achieved success as they built weight-management confidence.
Author: Kurt Lambeck
Publisher: Cambridge University Press
ISBN: 9780521673303
Category : Mathematics
Languages : en
Pages : 468
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Book Description
An analysis of the irregular rotation of the Earth and the geophysical mechanisms responsible for it.
Author: K. Srinivasa Rao
Publisher: John Wiley & Sons
ISBN: 9780470210444
Category : Business & Economics
Languages : en
Pages : 380
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Book Description
Here is a detailed, self-contained work on the rotation and Lorentz groups and their representations. Treatment of the structure of the groups is elaborate and includes many new results only recently published in journals. The chapter on linear vector spaces is exhaustive yet clear, and the book highlights the fact that all results of the orthosynchronous proper Lorentz group may be obtained from those of the rotation group via complex quaternions. The approach is unified, and special properties and exceptional cases are addressed.
Author: Stephen P. Radzevich
Publisher: CRC Press
ISBN: 0429999178
Category : Science
Languages : en
Pages : 935
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Book Description
Written by a leading expert, Theory of Gearing: Kinematics, Geometry, and Synthesis, Second Edition is intended for engineers and researchers in the field of gear design, gear production, gear inspection, and application of gears. It focuses on the scientific theory of gearing, in all its aspects, and its application to new gear types and designs.
