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Topic: Law of physics

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  Physical law - Wikipedia, the free encyclopedia
A physical law, scientific law, or a law of nature is a scientific generalization based on empirical observations of physical behavior.
Laws of nature are distinct from the law, either religious or civil, and should not be confused with the concept of natural law.
Inverse square law of interactions mediated by massless bosons is the mathematical consequence of 3-dimensionality of space.
en.wikipedia.org /wiki/Law_of_physics   (1504 words)

 Physics - Crystalinks
Physics is the science that deals with the structure of matter and the interactions between the fundamental constituents of the observable universe.
Physics plays an important role in all the natural sciences, however, and all such fields have branches in which physical laws and measurements receive special emphasis, bearing such names as astrophysics, geophysics, biophysics, and even psychophysics.
Taken together, these mechanical laws in principle permit the determination of the future motions of a set of particles, providing their state of motion is known at some instant, as well as the forces that act between them and upon them from the outside.
www.crystalinks.com /physics2.html   (3771 words)

 Physics Help - Overview, History, Future, Links
Physics (from Greek from φυσικός (phusikos): natural, from φύσις (fysis): Nature) is the science of Nature in the broadest sense.
Physics is very closely related to the other natural sciences, particularly chemistry, the science of molecules and the chemical compounds that they form in bulk.
Below is an overview of the major subfields and concepts in physics, followed by a brief outline of the history of physics and its subfields.
www.physics.teleactivities.net   (1550 words)

 Charles' Law | World of Physics
One of the gas laws, Charles' law states that at a constant pressure the volume of a fixed mass of gas is directly proportional to the absolute temperature.
Charles' law can be combined with Boyle's law and the pressure law to give the ideal gas law (also known as the universal gas law), pV = nRT, where p is pressure, V is volume, n is the number of moles of gas, R is the universal gas constant, and T is temperature.
Charles' law is a good indicator of what happens to a gas, since the volume and temperature are altered while the pressure remains constant.
www.bookrags.com /research/charles-law-wop   (291 words)

 Physics - Uncyclopedia
Physics is the plural form of physic which is German for "funny hair." Often represented in English-speaking countries by the formula:
Please note that Physics should not be confused with biology, chemistry, or geology, but should always, in all circumstances, be confused with mathematics.
This resulted in the destruction of physics as it was formerly known, and created a New Physics, ruled by Darth George, and to a lesser extent, Right-wing Ricky.
uncyclopedia.org /wiki/Physics   (667 words)

 Faraday's Law
Faraday's law is a fundamental relationship which comes from Maxwell's equations.
It serves as a succinct summary of the ways a voltage (or emf) may be generated by a changing magnetic environment.
When an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the change which produces it.
hyperphysics.phy-astr.gsu.edu /hbase/electric/farlaw.html   (366 words)

 Rutherford's Law - Quantum Physics - tribe.net
However, once in a while he noticed that alpha particles (helium nuclei that have lost both of their electrons/helium nuclei that carry a double positive charge>?>) passing through a thin metallic foil would be deflected from its path by a force of some kind, or a collision with something very small & dense.
This Law - as much as I can grasp so far - expresses that: The force acting upon the apha particles is the electric repulsion between its own double positive charge in addition to the positive charge of any atomic nuclei nearby.
The reason for Rutherford's Law was that prior to his experiments, it was believed that positive charge of the nucleus was uniformly spread throughout the volume which the atom occupied.
quantumphysics.tribe.net /thread/f604e7ef-138e-4d52-947f-7a0d5e30174f   (376 words)

 UNI Majors | Physics
A physics B.S. is a first step toward a wide variety of careers, such as research in physics, engineering and other technical fields; teaching at the college or university level; and research and development in industry.
A significant strength of the UNI Physics Department is the early and active involvement of physics majors in faculty research.
The physics major (67 to 70 hours) leading to the bachelor of science degree is recommended for students who wish to prepare for graduate study in physics; engineering; and other sciences, such as geophysics, astronomy, biophysics and medical physics.
www.uni.edu /majors/cns/physics/index.shtml   (949 words)

 Newton's Third Law   (Site not responding. Last check: 2007-11-04)
Quite obviously, this is a case of Newton's third law of motion.
In the top picture (below), a physics student is pulling upon a rope which is attached to a wall.
In the bottom picture, the physics student is pulling upon a rope which is attatched to an elephant.
www.glenbrook.k12.il.us /gbssci/phys/Class/newtlaws/u2l4a.html   (734 words)

 Ideal Gas Law | World of Physics
This law states that at any constant temperature, the product of the pressure and the volume of any size sample of any gas is a constant (V1/P).
This law is equivalent to the statement that volume is directly proportional to the number of atoms or molecules.
The gas constant arises from a combination of the proportionality constants in the three empirical gas laws and has a value that depends only upon the units in which the pressure and volume are measured.
www.bookrags.com /research/ideal-gas-law-wop   (397 words)

 Physics and Spiritual Law
This Law is fundamental in the functioning of many, many of the tools that mankind has engineered and which have enabled him to master his environment.
What this is saying is that this physical law which man has used to master his environment is none other than a specialized instance of the Universal Principle of God's Will expressing through a vehicle.
So these physical laws are used by man to express his mental creativity and manifest it physically in the creation of new vehicles such as: Cars, planes, engines, buildings, shops, rockets, etc.., etc...
www.divineparadox.com /Conversations/physics_and_spiritual_law.htm   (1384 words)

 Thermalphysics.org - Kirchhoff's Law - Author's Comments
Kirchhoff's Law of Thermal Radiation was formulated in 1859.
It is at the same time the simplest and least understood law in physics today.
Kirchhoff's law was describes how an object radiates when placed in thermal equilibrium within the confines of an enclosure.
www.thermalphysics.org /kirchoff/kirchhoffcom1.html   (308 words)

 Cartoon Laws of Physics
Cartoon Law IV The time required for an object to fall twenty stories is greater than or equal to the time it takes for whoever knocked it off the ledge to spiral down twenty flights to attempt to capture it unbroken.
This is the one law of animated cartoon motion that also applies to the physical world at large.
The laws of object permanence are nullified for "cool" characters.
funnies.paco.to /cartoon.html   (885 words)

 Overturning of Parity Law in Nuclear Physics
It thus cleared the way for a reconsideration of physical theories and led to new, far-reaching discoveries regarding the nature of matter and the universe.
Basically, parity conservation in quantum mechanics means that two physical systems, one of which is a mirror image of the other, must behave in identical fashion.
A description of both the history and the physics is available in the Nobel lectures by Weinberg, Salam, and Glashow.
physics.nist.gov /GenInt/Parity/expt.html   (1760 words)

 The Physics of Law of Attraction in Action
Law of Attraction, The Law of Cause and Effect--or what some call Karma, is constantly in effect.
The Law of Attraction governs the universe and is known as a universal principle.
Law of Attraction tells me that wherever I go, there it is. It just IS! So I surrender to it and make great use of it when I remember to do so.
www.wizardwonderland.com /lawofattraction.htm   (1844 words)

 Physics Today October 2003 - Applying Physics and the Law
In the mid-1970s, when Richard Meserve capped off his physics PhD with a law degree, the combination was unusual--and was perceived by some to be a defection from physics.
And the development of models and their consequences is completely natural to a scientist, particularly a physicist." Meserve earned his law degree in 1975 and then returned to editing his PhD thesis, which earned him the title of doctor in 1976.
After law school, Meserve clerked first for a judge in the highest court of Massachusetts, and then for Justice Harry Blackmun in the US Supreme Court.
www.physicstoday.org /vol-56/iss-10/p30.html   (1582 words)

 The Physics Classroom
Unit 1 of the Physics Classroom discussed a variety of ways by which motion can be described – words, graphs, diagrams, numbers, etc. This unit, Newton's Laws of Motion, will discuss the ways in which motion can be explained.
Isaac Newton (a 17th century scientist) put forth three laws which explain why objects move (or don't move) as they do and these three laws have become known as Newton's three laws of motion.
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
www.physicsclassroom.com /Class/newtlaws/U2L1a.html   (980 words)

 Physics newton law section at Free Download Manager
Physics Cheat Sheet DEMO is an interactive physics package that helps students solve and visualize numerous physics equations.
Physics Cheat Sheet DEMO was designed for use in high school and college physics courses.
In Newton's Law, players drop fl holes and disturb the path of a traveling planetoid, with the goal of pulling it into a stable orbit.
www.freedownloadmanager.org /downloads/physics_newton_law_info   (596 words)

 Physics Today August 2002
Rarely do I read an issue of Physics Today or other science journal and not find some handwringing about the decline in the number of physics majors (Physics Today, January 2002, page 42; November 2001, page 32; October 2001, page 11).
A new popular argument to boost physics enrollment has appeared (Physics Today, April 2001, page 43): A physics degree prepares a student for many jobs outside academia.
But few study physics in order to practice medicine or law; most physics students spend 4 to 10 years in school because they love physics.
www.physicstoday.org /pt/vol-55/iss-8/p75a.html   (347 words)

 The laws list
The laws list is a list of various laws, rules, principles, and other related topics in physics and astronomy.
Then, because of their similarity, I began adding rules to the list (after all, in physics, there is generally no difference between a law and a rule).
Now, the list is more of a minidictionary of physics and astronomy terms, rather than strictly a list of laws, rules, and so forth; however, for historical reasons I still refer to it as the laws list, even though it is something of a misnomer.
www.alcyone.com /max/physics/laws   (142 words)

 Ohm's Law   (Site not responding. Last check: 2007-11-04)
Material that obeys Ohm's Law is called "ohmic" or "linear" because the potential difference across it varies linearly with the current.
Because energy is conserved, the potential difference across an emf must be equal to the potential difference across the rest of the circuit.
Here is a nice simulated experiment on Ohm's Law for you to test your understanding of this concept.
www.physics.uoguelph.ca /tutorials/ohm/Q.ohm.intro.html   (342 words)

 Lab3-Ohm's Law
This principle states that the potential difference or voltage drop V across a circuit component like a conductor is proportional to the electric current I which passes through it, the proportionality constant being defined as the resistance R of the conductor:
In an electrical circuit with two or more resistances, Ohm's law may be applied to the entire circuit, to a portion of the circuit, or even to each individual resistance of the circuit.
Thus, when applying Ohm's law to the resistance R, V and I are the voltmeter and ammeter readings, respectively.
webphysics.davidson.edu /Course_Material/Py230L/OhmsLaw/ohmslaw.htm   (974 words)

 Physics BA Program
Assumes a third-semester decision to pursue the BA Physics degree.
First semester foreign language is considered remedial and does not apply toward the 124 hours needed for a degree.
Other physics or astronomy electives may be chosen instead.
www.uark.edu /depts/physics/undrgrad/ba/law2.html   (216 words)

 Making GW Discovery Extends Law of Physics   (Site not responding. Last check: 2007-11-04)
Della Torre and Bennett discovered that when plotting magnetization as a function of decreasing temperature the curve was no longer evenly sloped as predicted by the Bloch T 3/2 law.
The article, “Extension of the Bloch T 3/2 Law to Magnetic Nanostructures: Bose-Einstein Condensation” appears in Physical Review Letters, a prestigious physics journal published by The American Physical Society.
It is the collaborative work of the pair, along with R.E. Watson of the Brookhaven National Laboratory, Department of Physics in Upton, NY.
www.gwu.edu /~bygeorge/051705/physics.html   (228 words)

 A History of Physics Research at Brookhaven
From its inception Brookhaven has had a major focus on physics, including the subfields of nuclear, particle and condensed matter, and five Nobel Prizes in physics have resulted.
Three of those discoveries were made at the Laboratory's premiere proton accelerator, the Alternating Gradient Synchrotron (AGS), and another Nobel Prize in physics was awarded for a theoretical breakthrough that showed a violation of a supposedly absolute law of physics known as parity conservation.
Many other important physics discoveries have been made at BNL facilities over the years, including at the AGS, the Relativistic Heavy Ion Collider, the National Synchrotron Light Source, the Brookhaven Graphite Research Reactor, the High Flux Beam Reactor and elsewhere.
www.bnl.gov /physics/history   (309 words)

 Department of Physics and Astronomy
The Department of Physics and Astronomy at Vanderbilt University combines the friendly and supportive atmosphere of a liberal arts college with the excitement and challenge of forefront research.
These research programs are at the cutting edge of traditional areas of physics as well as being a major contributor to contemporary interdisciplinary institutions and centers.
Congratulations to physics senior John Jumper, winner of a 2007 Marshall Scholarship to study Theoretical Condensed Matter physics at the University of Cambridge.
sitemason.vanderbilt.edu /physics   (458 words)

 SparkNotes: SAT Physics: Faraday’s Law
Faraday’s Law tells us that a change in magnetic flux induces a current in a loop of conducting material.
Lenz’s Law is really a special case of the conservation of energy.
By Lenz’s Law, the current must then be in the upward direction.
www.sparknotes.com /testprep/books/sat2/physics/chapter16section2.rhtml   (1250 words)

 Physics Zone - Lenz's Law   (Site not responding. Last check: 2007-11-04)
In 1835 Heinrich Lenz stated the law that now bears his name.
The plate sees a changing magnetic field which creates a current in the plate, which creates its own magnetic field opposing the one that created it.
Another great example of Lenz's law is to take a copper tube (it's conductive but non-magnetic) and drop a piece of steel down through the tube.
regentsprep.org /Regents/physics/phys08/clenslaw/default.htm   (240 words)

 SparkNotes: SAT Physics: Newton’s Law of Universal Gravitation
Newton proposed that every body in the universe is attracted to every other body with a force that is directly proportional to the product of the bodies’ masses and inversely proportional to the square of the bodies’ separation.
N! Newton’s Law of Gravitation was an enormous achievement, precisely because it synthesized the laws that govern motion on Earth and in the heavens.
This is now pretty common knowledge, but it still trips up students on SAT II Physics: all objects under the influence of gravity, regardless of mass, fall with the same acceleration.
www.sparknotes.com /testprep/books/sat2/physics/chapter11section2.rhtml   (1033 words)

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