AH Physics SpaceandTimeTeachersNotes Mary
... The strong equivalence principle states that the effects of gravity are exactly equivalent to the effects of acceleration. Hence no experiment can distinguish gravitation from accelerated motion. In effect this principle states that the laws of physics are the same in an accelerated reference frame ...
... The strong equivalence principle states that the effects of gravity are exactly equivalent to the effects of acceleration. Hence no experiment can distinguish gravitation from accelerated motion. In effect this principle states that the laws of physics are the same in an accelerated reference frame ...
Why is there Magnetism?
... Why is there Magnetism? Einstein gave the answer: Electricity + motion = Magnetism ...
... Why is there Magnetism? Einstein gave the answer: Electricity + motion = Magnetism ...
General Relativity The Equivalence Principle
... prediction of General Relativity. However, we may soon be on the verge of direct detection of gravitational waves. An experiment called LIGO (Laser Interferometer Gravitational Observatory) is under construction in the U.S., as are a couple of experiments in Europe. LIGO is a pair of interferometers ...
... prediction of General Relativity. However, we may soon be on the verge of direct detection of gravitational waves. An experiment called LIGO (Laser Interferometer Gravitational Observatory) is under construction in the U.S., as are a couple of experiments in Europe. LIGO is a pair of interferometers ...
PHY 108 – Atoms to Galaxies
... No experiment performed within a sealed room moving at an unchanging velocity can tell you whether you are standing still or moving. ...
... No experiment performed within a sealed room moving at an unchanging velocity can tell you whether you are standing still or moving. ...
Document
... Let us examine with Mr. Lorentz’s eye how this equation behaves: pretty badly. In the first term, we have a laplacian which in 4space is not a physical quantity – but could easily become a D’Alambertian, since (remember? we are in electrostatics) the time-derivatives are null. And… the D’Alambertian ...
... Let us examine with Mr. Lorentz’s eye how this equation behaves: pretty badly. In the first term, we have a laplacian which in 4space is not a physical quantity – but could easily become a D’Alambertian, since (remember? we are in electrostatics) the time-derivatives are null. And… the D’Alambertian ...
The Einstein – Lorentz Dispute Revisited
... [If one attempts such a Newtonian transform on Maxwell's equations and the speed of light wrong results are obtained because of non-linearity. In addition, one cannot subtract a velocity difference between two systems from the speed of light, c, because c is an absolute constant given by c2= 1/ε·μ a ...
... [If one attempts such a Newtonian transform on Maxwell's equations and the speed of light wrong results are obtained because of non-linearity. In addition, one cannot subtract a velocity difference between two systems from the speed of light, c, because c is an absolute constant given by c2= 1/ε·μ a ...
以人为本 深化改革 努力探索实验室开放的新路子
... f C* 2mv' Considering together with the direction, it can be expressed in terms of cross product as ...
... f C* 2mv' Considering together with the direction, it can be expressed in terms of cross product as ...
relativity_s08
... • "It followed from the special theory of relativity that mass and energy are both… are but different manifestations of the same thing – a somewhat unfamiliar conception for the average mind. Furthermore, the equation E is equal (to) m c squared, in which energy is put equal to mass, multiplied with ...
... • "It followed from the special theory of relativity that mass and energy are both… are but different manifestations of the same thing – a somewhat unfamiliar conception for the average mind. Furthermore, the equation E is equal (to) m c squared, in which energy is put equal to mass, multiplied with ...
Phy107Fall06Lect15 - UW High Energy Physics
... • Light is a set of electric and magnetic fields where the changing electric field creates the magnetic field and the changing magnetic field creates the electric field • Only works when the fields change from up to down and back again at the speed of light • The speed of light is a special value - ...
... • Light is a set of electric and magnetic fields where the changing electric field creates the magnetic field and the changing magnetic field creates the electric field • Only works when the fields change from up to down and back again at the speed of light • The speed of light is a special value - ...
09. General Relativity: Geometrization of Gravity
... taken by leading and trailing edges of light signal are not "parallel". • The experimental result is explained without reference to a force acting on clocks in a way different from how it acts on other things. We can say instead that gravity, as the curvature of spacetime, affects all objects in the ...
... taken by leading and trailing edges of light signal are not "parallel". • The experimental result is explained without reference to a force acting on clocks in a way different from how it acts on other things. We can say instead that gravity, as the curvature of spacetime, affects all objects in the ...
Moving from Newton to Einstein
... If you ask a random collection of first year students, “What do you know about relativity?” the answers might be: “All is relative?” “It all depends on your frame of reference.” “You will never measure an absolute velocity unless you look into space.” “Wasn’t it invented by the same guy that gave us ...
... If you ask a random collection of first year students, “What do you know about relativity?” the answers might be: “All is relative?” “It all depends on your frame of reference.” “You will never measure an absolute velocity unless you look into space.” “Wasn’t it invented by the same guy that gave us ...
General Relativity
... direction. When it reaches the other wall it will not reach the same height. According to Einstein’s principle of equivalence light will also bend in a gravitational field… ...
... direction. When it reaches the other wall it will not reach the same height. According to Einstein’s principle of equivalence light will also bend in a gravitational field… ...
Do Black Holes Really Exist?
... measurement is inconsistent with Einstein’s equivalence principle, and was based on invalid application of special relativity. Experimentally, his theory would lead to only one half of the observed deflection angle. ...
... measurement is inconsistent with Einstein’s equivalence principle, and was based on invalid application of special relativity. Experimentally, his theory would lead to only one half of the observed deflection angle. ...
Do Black Holes Really Exist?
... measurement is inconsistent with Einstein’s equivalence principle, and was based on invalid application of special relativity. Experimentally, his theory would lead to only one half of the observed deflection angle. ...
... measurement is inconsistent with Einstein’s equivalence principle, and was based on invalid application of special relativity. Experimentally, his theory would lead to only one half of the observed deflection angle. ...
Slide 1
... The ‘total energy’: γmoc² = Ek + moc² So what is the moc² ? Einstein said it is the energy associated with the mass of an object. In fact energy and mass are different manifestations of the same thing: ‘massenergy’ So E = mc² (or γmoc²) actually represents the total energy of an object (including ki ...
... The ‘total energy’: γmoc² = Ek + moc² So what is the moc² ? Einstein said it is the energy associated with the mass of an object. In fact energy and mass are different manifestations of the same thing: ‘massenergy’ So E = mc² (or γmoc²) actually represents the total energy of an object (including ki ...
Orbital Paths
... gravitational potential energy conservation of energy implies: orbits can’t change spontaneously An object can’t crash into a planet unless its orbit takes it there. An orbit can only change if it gains/loses energy from another object, such as a gravitational encounter: ...
... gravitational potential energy conservation of energy implies: orbits can’t change spontaneously An object can’t crash into a planet unless its orbit takes it there. An orbit can only change if it gains/loses energy from another object, such as a gravitational encounter: ...
history of physics
... In unifying electricity and magnetism, Maxwell determined that light was a form of electromagnetism: an electromagnetic wave. However, the argument was not over. With the rise of quantum theory came the wave-particle duality which not only describes electromagnetic radiation as having properties of ...
... In unifying electricity and magnetism, Maxwell determined that light was a form of electromagnetism: an electromagnetic wave. However, the argument was not over. With the rise of quantum theory came the wave-particle duality which not only describes electromagnetic radiation as having properties of ...
End-semester Examination 2013 Mechanics (PHY102A/N
... 1. Imagine an isolated system with two particles interacting with each other via a central force. For this system, which of the following quantities are conserved. ! (a) √ Total energy! (b) Total kinetic energy ! (c) √ Total angular momentum ! (d) √ Total linear momentum. ! 2. Which of the following ...
... 1. Imagine an isolated system with two particles interacting with each other via a central force. For this system, which of the following quantities are conserved. ! (a) √ Total energy! (b) Total kinetic energy ! (c) √ Total angular momentum ! (d) √ Total linear momentum. ! 2. Which of the following ...
Slide 1
... x’y’z’ moving with a fixed velocity relative to reference frame xyz, such that the reference frames coincide at t=0, and the relative velocity is along the x-axis. This is called the Galilean Transformation. The coordinates x’y’z’t’ give the location of a point as measured from the fixed frame in te ...
... x’y’z’ moving with a fixed velocity relative to reference frame xyz, such that the reference frames coincide at t=0, and the relative velocity is along the x-axis. This is called the Galilean Transformation. The coordinates x’y’z’t’ give the location of a point as measured from the fixed frame in te ...
FREE ENERGY & Antigravity
... General Relativity. He stated “there is no experiment a person could conduct in a small volume of space that would distinguish between a gravitational field and an equivalent uniform acceleration”. Is that so??? ...
... General Relativity. He stated “there is no experiment a person could conduct in a small volume of space that would distinguish between a gravitational field and an equivalent uniform acceleration”. Is that so??? ...
stphysic - The Skeptic Tank
... experiment be preformed on a train where the balls are moving along the line of the train's motion. An outside observer would say that the initial and final velocities of the balls are one thing, while an observer on the train would say they were something different. However, BOTH observers must agr ...
... experiment be preformed on a train where the balls are moving along the line of the train's motion. An outside observer would say that the initial and final velocities of the balls are one thing, while an observer on the train would say they were something different. However, BOTH observers must agr ...
relative - Purdue Physics
... Relativity requires the laws of physics to be the same even if two inertial systems have relative motion Assume Ted is moving with a constant velocity v relative to Alice when he turns on a flashlight Newton’s mechanics predict that speed of the light wave relative to Alice should be c + v According ...
... Relativity requires the laws of physics to be the same even if two inertial systems have relative motion Assume Ted is moving with a constant velocity v relative to Alice when he turns on a flashlight Newton’s mechanics predict that speed of the light wave relative to Alice should be c + v According ...
Special relativity
In physics, special relativity (SR, also known as the special theory of relativity or STR) is the generally accepted physical theory regarding the relationship between space and time. It is based on two postulates: (1) that the laws of physics are invariant (i.e. identical) in all inertial systems (non-accelerating frames of reference); and (2) that the speed of light in a vacuum is the same for all observers, regardless of the motion of the light source. It was originally proposed in 1905 by Albert Einstein in the paper ""On the Electrodynamics of Moving Bodies"". The inconsistency of Newtonian mechanics with Maxwell’s equations of electromagnetism and the inability to discover Earth's motion through a luminiferous aether led to the development of special relativity, which corrects mechanics to handle situations involving motions nearing the speed of light. As of today, special relativity is the most accurate model of motion at any speed. Even so, Newtonian mechanics is still useful (due to its simplicity and high accuracy) as an approximation at small velocities relative to the speed of light.Special relativity implies a wide range of consequences, which have been experimentally verified, including length contraction, time dilation, relativistic mass, mass–energy equivalence, a universal speed limit, and relativity of simultaneity. It has replaced the conventional notion of an absolute universal time with the notion of a time that is dependent on reference frame and spatial position. Rather than an invariant time interval between two events, there is an invariant spacetime interval. Combined with other laws of physics, the two postulates of special relativity predict the equivalence of mass and energy, as expressed in the mass–energy equivalence formula E = mc2, where c is the speed of light in vacuum.A defining feature of special relativity is the replacement of the Galilean transformations of Newtonian mechanics with the Lorentz transformations. Time and space cannot be defined separately from each other. Rather space and time are interwoven into a single continuum known as spacetime. Events that occur at the same time for one observer could occur at different times for another.The theory is ""special"" in that it only applies in the special case where the curvature of spacetime due to gravity is negligible. In order to include gravity, Einstein formulated general relativity in 1915. (Special relativity, contrary to some outdated descriptions, is capable of handling accelerated frames of reference.)As Galilean relativity is now considered an approximation of special relativity that is valid for low speeds, special relativity is considered an approximation of general relativity that is valid for weak gravitational fields, i.e. at a sufficiently small scale and in conditions of free fall. Whereas general relativity incorporates noneuclidean geometry in order to represent gravitational effects as the geometric curvature of spacetime, special relativity is restricted to the flat spacetime known as Minkowski space. A locally Lorentz-invariant frame that abides by special relativity can be defined at sufficiently small scales, even in curved spacetime.Galileo Galilei had already postulated that there is no absolute and well-defined state of rest (no privileged reference frames), a principle now called Galileo's principle of relativity. Einstein extended this principle so that it accounted for the constant speed of light, a phenomenon that had been recently observed in the Michelson–Morley experiment. He also postulated that it holds for all the laws of physics, including both the laws of mechanics and of electrodynamics.