Physics (Greek: physis – φύσις meaning "nature") is a natural science; it is the study of matter and its motion through spacetime and all that derives from these, such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the world and universe behave.

Physics is one of the oldest academic disciplines, perhaps the oldest through its inclusion of astronomy. Over the last two millennia, physics had been considered synonymous with philosophy, chemistry, and certain branches of mathematics and biology, but during the Scientific Revolution in the 16th century, it emerged to become a unique modern science in its own right. However, in some subject areas such as in mathematical physics and quantum chemistry, the boundaries of physics remain difficult to distinguish.

Physics is both significant and influential, in part because advances in its understanding have often translated into new technologies, but also because new ideas in physics often resonate with the other sciences, mathematics and philosophy.

For example, advances in the understanding of electromagnetism or nuclear physics led directly to the development of new products which have dramatically transformed modern-day society (e.g., television, computers, and domestic appliances); advances in thermodynamics led to the development of motorized transport; and advances in mechanics inspired the development of calculus.

Physics Mass–energy equivalence History of... Branches Classical mechanics Electromagnetism Statistical mechanics · Thermodynamics Quantum mechanics Relativity Research fields Applied Physics Astrophysics Atomic, molecular, and optical physics Biophysics Condensed matter physics Geophysics Particle Physics Past experiments 2-degree-Field Galaxy Redshift Survey 2-Micron All-Sky Survey (2MASS) Bell test · BOOMERanG · Camera obscura experiments · Cavendish experiment · Cosmic Background Explorer (COBE) · Davisson-Germer · Double slit · Foucault pendulum · Franck Hertz · Gravity Probe A · Gravity Probe B · Geiger–Marsden · Homestake experiment · Oil-drop experiment · Michelson-Morley · Neutrino experiment · Sloan Digital Sky Survey · Stern-Gerlach · Wilkinson Microwave Anisotropy Probe Current experiments Relativistic Heavy Ion Collider HERA · LHC James Webb Space Telescope Scientists Bohr · Dirac · Einstein · Feynman· Galileo · Heisenberg · Maxwell · Newton · Pauli · Rutherford · Schrödinger · Wigner This box:

From Wikipedia under the GNU Free Documentation License
Sun Oct 4 20:39:29 2009

PHYsICS!!!!!!!!!!?
Q. Physics homework help!!! very important, need to get an A? an object is placed in front of a diverging lens with a focal length of 20.0 cm. For each object distance, find the image distance and the magnification. Describe each image. a. 40 cm B. 20.0 cm C. 10.0 cm i think one equatiom might jog ur memory, like 1 over p plus 1 over f equals 1 over q or something like tht, plz help me, i need to pass physics fo this quarter, i did the 1st 6 problems, but cant get these last two. thnx very very much
Asked by braber5 - Sun Apr 27 19:18:14 2008 - - 1 Answers - 0 Comments

A. Ok, it's been a real long time so I had to pull out the formulas and this is what I came up with. a. f = 20 O = 40 I = 40 M = -1 b. f = 20 O = 20 I = 0 M = 0 c. f = 20 O = 10 I = 20 M = -2 a. 1 / I + 1 / 40 = 1 / 20 1 / I = 1 / 20 - 1 / 40 1 / I = 1 / 40 I = 1 / .025 I = 40 M = - I / O M = - 40 / 40 M = -1 b. 1 / I + 1 / 20 = 1 / 20 1 / I = 1 / 20 - 1 / 20 1 / I = 0 M = - I / O M = - 0 / 20 M = 0 c. 1 / I + 1 / 10 = 1 / 20 1 / I = 1 / 20 - 1 / 10 1 / I = - 1 / 20 I = 1 / .05 I = 20 M = - I / O M = - 20 / 10 M = - 2 I could have missed the boat entirely, but, here's the math. Work it yourself and check. Hope it helps!!
Answered by pruitt801 - Tue Apr 29 12:51:44 2008

How hard would a correspondence course in Physics 112 be for someone who has never taken physics before?
Q. I have been conditionally accepted into a respiratory therapist program but have never taken any Physics perviously and one of the requirments is 112 physics. I am planning to take a correspondence course via a local college, but am worried about not being able to understand the concepts of physics. I would greatly appreciate some insite on what Im up against! Thanks! PS: Also if you know how interelated the concepts of physics and respiratory therapy are it would be nice to know.
Asked by Regina - Wed Apr 23 17:01:58 2008 - - 2 Answers - 0 Comments

A. Given that every university has different numbering systems, telling us that it is Physics 112 is meaningless. If it is an introductory class for non-science majors, then it should not be too hard. If it is an introductory class for science majors, it may require you to know calculus to do the work. If it is not an introductory class, then it could be very difficult for you. I doubt that knowing physics will help much in doing respiratory therapy. However, the skills that you use in learning physics will be valuable in any field.
Answered by Ranto - Wed Apr 23 17:12:48 2008

What is a good website for physics practise?
Q. I'm in grade 10 and have a science exam tomorrow. Physics is my weakness, and i want to practise it, not just study. Any suggestions on a website that has practice questions? Our physics unit was about motion. Thanks!
Asked by 11liv - Thu Jan 22 17:31:22 2009 - - 1 Answers - 0 Comments

A. Ok go to my school website, Larbet high school, Then go to faculties, then science, then physics, then question time, now i dont know what the grading system is like where u r but jst say this = S1 = ages 12 Standard Grade (SG) = 13 Int 1 = 14 Int 2 = 15 Higher = 16 Advanced higher = 17 So click on whatever one is suitable for you, you could look about the age groups for motion, i dono what year it is, but then u can download the questions and answers theres about 60, our physics teachers makes us do it right now for revision ( im 13) good luck=]
Answered by Mark - Thu Jan 22 17:39:32 2009

From Yahoo Answer Search: "Physics"
Sat Oct 24 03:19:07 2009

Physics is the science of the natural world, which deals with the fundamental particles the universe is made of, the interactions between them, and the interactions of objects composed of them (nuclei, atoms, molecules, etc).

Contents

Sourced

  • Physicists use the wave theory on Mondays, Wednesdays and Fridays and the particle theory on Tuesdays, Thursdays and Saturdays
    • William Henry Bragg; quoted in Dictionary of Scientific Quotations by Alan L. Mackay, Institute of Physics Publishing, Bristol, 1994, p. 37 [1]
    • Variant: On Mondays, Wednesdays and Fridays we teach the wave theory and on Tuesday, Thursdays and Saturdays the corpuscular theory.
    • Quoted in Physically Speaking: A Dictionary of Quotations on Physics and Astronomy by C.C. Gaither, 1997, ISBN 0750304707. [2]
    • unsourced variant: God runs electromagnetics by wave theory on Monday, Wednesday, and Friday, and the Devil runs them by quantum theory on Tuesday, Thursday, and Saturday. [3]
  • Physics and philosophy are at most a few thousand years old, but probably have lives of thousands of millions of years stretching away in front of them. They are only just beginning to get under way.
    • Physics and Philosophy (1942), p.217.
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From Google News Search: "Physics"
Thu Oct 22 21:03:44 2009

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awarded the Nobel prize for physics There are some little surprises here and there mainly though its a nice thing to look at If you click on the image it gets bigger and sharper Posted at 09 15 PM in

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hit 60 ever during the day and we almost had frost the night before is it really late May The AP advanced placement classes made T shirts for the trip note the hoodies underneath On the back they have physics ish greek letters on them though some of them are combined in strange combinations that have absolutely no relevance whatsoever to actual physics E g picking

From Yahoo Image Search: "Physics"
Mon Oct 19 17:43:27 2009

symmetry breaking Blog Archive Particle physics lab to help ...
symmetrymagazine.org
symmetry breaking Blog Archive Particle physics lab to help ...

Miriam Boon

ue, 29 Sep 2009 15:26:15 GM

The large . physics. experiments have a lot of experience in terms of technical collaborations between the universities' researchers and engineers, said Ruth Pordes, associate head of Fermilab's Computing Division. ...

AMD, Pixelux join forces on OpenCL game physics - The Tech Report
techreport.com
AMD, Pixelux join forces on OpenCL game physics - The Tech Report

unknown

Wed, 30 Sep 2009 17:06:00 GM

Six months ago, AMD and Havok were together at the Game Developers Conference demonstrating OpenCL-accelera​ted cloth . physics. . Today, AMD has announced another partnership with a different . physics. middleware developer: Pixelux ...

US LHC Blog Symmetry in Physics , Part 1: Spacetime Symmetry
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US LHC Blog Symmetry in Physics , Part 1: Spacetime Symmetry

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Sun, 20 Sep 2009 14:46:33 GM

One of the reasons why physicists often wax poetic about the beauty of . physics. is that so much of the field has based on symmetry, and humans find symmetry beautiful. But it is partly because people have an intuitive sense of what ...

From Google Blog Search: "Physics"
Mon Oct 5 19:09:21 2009

See also:

  • Science, Pseudoscience and SocietyScience, Pseudoscience and Society
    softpanorama.org
    Papers by Feynman on paranormal 'sciences', Sokal Affair (use of pseudo-physics in social sciences), critique of Kuhn. Also a collection of links.
  • Kuhn's Structure of Scientific RevolutionsKuhn's Structure of Scientific Revolutions
    marxists.org
    Crucial chapter from Kuhn's famous book outlining how sciences is forced to go through a paradigm-shift, and see the world in terms of a new theory and new concepts.
  • Varieties of Explanatory AutonomyVarieties of Explanatory Autonomy
    philsci-archive.pitt.edu
    Transcript of a talk by Lawrence Sklar discussing areas of physics not directly explicable by fundamental dynamic principles alone. [PDF] [PDF]
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Wed Oct 21 19:50:44 2009