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General and Special Relativity

~1500 answered questions
Parent Category: Physics
Relativity is the theory stating that all measurements depend on the relative motions of the observer and the observed. The theories of general and specific relativity were both proposed by Albert Einstein.

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While no scientific theory is ever (or should be) closed to controversy, the answer currently accepted by most Physicists (thanks to Einstein) is that the fourth dimension is time, or that time is the way we experience the fourth dimension.It depends on your concept of what exactly is a dimension. I…
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Part 1: General relativity has gravity act on photons not directly (as with objects with mass) but by bending the space&time around the object. The photons are unaffected. The path they take is curved, so they appear to bend. Sort of like how you can walk in a "straight line" on earth, but event…
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probable plugged catalytic converter...simple air flow test on front o2 sensor port will verify..
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ur faceAnswerIf she is not dealing with some personal issue where she needs some time to handle it, like a death in the family or an illness or anything like that. If her reason is soley as a result of your relationship with her, then I would say its not a good sign. Reguardless of what anyone says …
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Ofcorse time exists. We are actually travling thorugh time as we speak. To stop age-ing we have to travel by light year. Each light year we cross we stop age-ing (FACT). Hope that helps you!
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Imagine you are riding 20 mph on a bicycle. If you throw a ball 5 mph in the direction you are going, the ball would be traveling at 25 mph. Light doesn't work that way. Relativity says that the speed of light is constant and cannot change. Now imagine you are on a road that never ends with a bike t…
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quantum field theory, quantum electrodynamics, quantum chromodynamics, string theory Energy is quantized
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Among other things, our GPS systems, defense systems and communications networks would not work properly if we did not know how to adjust for relativistic effects as predicted by Einstein's equations. Relativity has been verified in a number of ways and has not yet been refuted, so relativity has he…
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In November of 1919, at the age of 40, Albert Einstein became an overnight celebrity, thanks to a solar eclipse. An experiment had confirmed that light rays from distant stars were deflected by the gravity of the sun in just the amount he had predicted in his 1916 paper on his theory of gravity, gen…
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Try reading the book Spacetime Physics, by Taylor & Wheeler, published in 1965 and still in print. I read it when I was in High School and found it very understandable. It uses lots of geometry to explain things and avoids calculus. See if your local library has it or can get it for you from ano…
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As soon as history began being recorded. Prehistoric simply means that nothing was being recorded. For instance, the prehistoric era ended in parts of ancient Mesopotamia about 3000 BCE, while an undiscovered tribe that exists right now (and there are some, particularly in the Amazon) would still be…
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Answer In the year 1915-16.
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Quantum mechanics deals with things on the atomic and subatomic level. Statistical mechanics deals with large systems, on the order of 10^23 particles. So those are currently mutually exclusive areas of physics. That is not to say that one day that issue will be rectified, but as of current there is…
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Answer An interesting question. For my money, there is no time in space. Time is a human construct devised as a way to regulate our environment, and based on the astronomical accident of the rotation speed of the earth. If you think about it, was there time for Neanderthals? No. They hunted when…
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The principle of relativity means that physical measurements are independent of an observer's velocity.Or perhaps you are referring to the Theory of Relativity; since this is a complicated topic, better read the corresponding Wikipedia article.
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Yes it has been proved wrong by an Indian scientist who had written a 181 page thesus to prove him wrong!! I don't remember the name but will give it to u shortly!!
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Einstein's Theory of Relativity proposes that gravity, time, energy and matter are all tied together. Changes in one affect the others. Each must be viewed relative to the others. Among other effects it supposes that: 1. The faster you go the slower time passes. If you put a clock on a fast rocket w…
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Original theory of relativity: Galileo Galilei The theories of general and special relativity: Albert EinsteinAlbert Einstein developed the theory of relativity.Albert Einstein developed the theory of relativity between 1907 through 1915. It was further developed by Max Planck, Hermann Minkowski, a…
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The scientific Theories of General and Special Relativity were first proposed by Albert Einstein. Special Relativity in 1906 and General Relativity in 1916.
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Einstein's theory of relativity is that the faster an object moves, the slower time passes for that object, compared to an outside, stationary observer, so the object essentialy travels forward in time. Extreme speeds (nearing the speed of light) however, are necesary for any noticeable effects, and…
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Albert Einstein changed the meaning of the words distance, time, space.
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Answer: Yes, but only instantaneously. Consider a thrown ball moving directly upward. At the highest point of its trajectory, the instanataneous velocity (the velocity at that precise instant) is zero even while the acceleration due to gravity remains non zero.
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As of 2007 the normal three section traffic signal weighs about 20 lbs. Older ones weigh more due to metal being used instead of plastics. A larger concern is what holds the signal up. If its a cable and it breaks it can be hazardous. If its held up by a mast arm, a serious accident could cause it…
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General relativity or the General theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1915/16. It unifies special relativity and Newton's law of universal gravitation, resulting in a theory in which gravity is a property of the geometry of space and time. In …
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Albert Einstein is one of the most prolific scientific minds in history. When he made his Theory of Relativity he did have a few thoughts on the subject. He thought it was one of the principle theories. This means it is not based on a hypothesis, but facts.
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I would say that we can't weight light because whether heavy or light. if we weight any substance,if we pass light on that object the mass of that object will be constant so we cant measure light
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The theory of relativity, refers specifically to two theories: Albert Einstein's special relativity and general relativity. also Einstein was fatt...no phat..YaSpecial relativity: a theory of the structure of spacetime. It was introduced in Albert Einstein's 1905 paper "On the Electrodynamics of Mov…
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Currently, there really isn't anything that can move faster than the speed of light, man-made nor natural, possibly not even alien. In theory, warp drives would work, but would require enormous amounts of fuel, which we currently do not have. Also, in order to move faster than the speed of light, yo…
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now hur hur hur shame
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Well light can weigh something, but I know this for sure: gravity can pull light in so therefor there has to be a number of its weight (even if it is very small).
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It is not possible to accelerate electrons--or anything else--to the speed of light, much less to 1.5 times the speed of light. Nominal operating voltages for a CRT range from a couple of thousand volts to a few tens of thousands of volts, depending on the application.
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The ball is put on the line wherever it went out, then a player of the team who did not touch the ball last has a free hit. For sideline hits within the 23 metre area, the ball cannot be played into the circle without first having touched another stick or being played five metres distance.
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For thousands of years in man's history there was no electricity. Only in the past 100 years has there been electricity. Without it there would be many things we can't do, but there would be plenty we can do. When the industrial revolution first began steam and water power was used to run machines, …
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Photons have zero mass. Any subatomic particle such as a photon doesn't interact with the Higgs field which is what defines a particles of no mass. The photon is one of the three known massless particles. Rest mass is the mass of an object that calculated from the point of the observer is not moving…
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The question states an incorrect premise. As an object approaches the speed of light, neither the object nor light "goes slower". At relativistic speeds (speeds of about 1/100 of the speed of light or faster), the faster a body travels, the slower time passes for that body compared to a "non-moving…
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No. Speed of light is constant in all frames of reference, even if you are also traveling at the speed of light, the photon will speed away from you at the speed of light. When you see an object, what is happening is that photons are reflected off the object you are looking at and bounce back into…
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No. Photons are massless wherever you find them. They "hide" behind wave-particle duality, and that lets them do the quirky things they do. And, though they can assume their choice of "costume" as it suits them, they have no mass whatsoever.
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No one knows for certain when the end times are. but a vary popular televangulace named Jack Van Impe has stated that he beileves it will be close to the 31 of December of 2008. but if you would like to know more i suggest you visit bible.org it may clear some things upalso you could go to Jack Van …
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Exactly 299 792 458 meters per second
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They either stop play where it lands or redo it
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The faster a clock travels, the slower it appears to run.
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It's my opinion that time stop's. I base this on the event horizon of a black hole. It might not stop for the object but it might stop to us. I could be an object keeps mass length time but not in our physical demension/universe. Alternate answer: Approaching the speed of light; 1) Your time slows …
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No. Otherwise it wouldn't be a time machine. And if you took some spares with you and left them there when you came back it would save you months having to make all the parts in the first place. Srsly though, your question states a paradox but it assumes that a time machine can be made at all an…
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Rather than use a particular fuel, 'warp drive' creates a change in the curvature of space-time continuum. ANSWER: The ship would be able to manipulate gravity and literally be able to pull it's destination towards itself while pushing it's point of origin away from itself this allows travel t…
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As this question was placed in the "Mormonism" category, I think it is only fitting that a Mormon [LDS] perspective is also given on it: In certain senses, "time" is only known to this earth life, as it is our bodies which are limited in time - which is also a limited condition. As our spirits are e…
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A good example is the boiling kettle. When the water is boiling the water molucles jump about and some escape up the kettles spout. Most people will notice the water vapour first which mistakingly they call steam. The real steam is a few centimeters from the end of the spout and is invisible.
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Depends on the type of glass, but, loosely speaking, "glass" is an insulator. If it is an conductor of heat, it should have metals in it. Some might have oxygen present, which is melted at a very high temperature with soda, or limewater. The sand will mix with the metals (two of them) and form a shi…
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Convex lenses are thicker in the middle than at the edges. They refract toward the center. Only people have convex lenses. Concave lenses are used in telescopes and glasses. Concave lenses are thinner in the middle than at the edges. When light passes through concave lenses always bend away from eac…
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The speed of electromagnetic radiation is determined by the electrical characteristics of the material it's traveling through ... specifically, the electrostatic permittivity and the magnetic permeability. Those numbers are different for every material. The speed of light in the material is 1/(the s…
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hbti,kapur iet,lucknowITM SCHOOL OF MANAGEMENT mmm,gorakhpurbiet,jhansi
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Albert Einstein developed the theory of relativity.
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Great question! This issue has been argued about and studied by astronomers for many years. The best experiments indicate that light never gets tired and never slows down. It does not need infinite energy to do this -- all light seems to travel at the speed of light "c" in a vacuum. Don't confuse …
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A charged insulator can be discharged by passing it just above a flame because a flame has a cloud of ions above it. Even though the overall charge above the flame is neutral, a charged insulator will use up the ions that it needs and neutralize.
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It isn't truly a paradox. Here's the problem: A spaceship leaves earth for a trip at high relativistic velocity. Aboard is one twin, the other having remained on earth. The ship is moving away from earth at high speed, and returns to earth at high speed, therefore it's time is dilated, so the twin …
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we can learn about our day to day life Physics was first used to help explain the motions of planets and objects under the influence of gravity, among other things. Now it has applications in many sciences from mechanics (like using different sized gears on a bicycle or transmission to magnify for…
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A concave lens is a lens in which the ends are thicker than the middle, rather shaped like this ---> )( A convex lens is a lens in which the ends are thinner than the middle, shaped like the following ---> ()
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According to quantum theory, and many other theories, and scientists, there may actually be a multiverse. A multiverse is just what it sounds like - multiple universes. However, there is no proof of multiverses right now, so the only facts we have is that there is only one universe.
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Matter is defined as a physical substance having mass and volume. Because of these two properties, it will also have weight (due to gravity acting on its mass) and density (the ratio of mass to volume). The mass also implies inertia, as energy must be applied to affect the motion of matter. For chem…
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Photons have mass. Photons have momentum. Photons have energy. Photons are affected by a gravitation field and follow a curved path called a geodesic. (A geodesic is a straight line in curved space, so what you call curved depends on whether you are a geometer or if you are watching from a distance…
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We currently do not have any technology to travel outside the "normal" time stream. We are carried along into the future by the currents of cause and effect. Other than moving along with the "present" in the time stream (and, therefore, into the future), no other time travel is within our capability…
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At present, no, there is no conceivable method of safely traveling in time. Oddly enough, time travel is not prohibited by the laws of physics but there are many obstacles to making it safe or even using it to communicate. In fact, there are hypotheses that state that these obstacles will ultimatel…
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Normally its a lowercase c, as in E=m(c)2. Energy=mass times the speed of light squared.
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Jerry Brown is the Governor and chief executive of the state of California. Within the state, every city and town has its own mayor, and most of them have city councils.
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Iron is useful in our society today because iron is virtually used in everything : building ( bridge , highway , rail road , etc.) , transportation (car , train , boats , plane , etc.) , tools (knife , machines , etc.)
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That depends on what is burning. If it's something normal like wood, the coloration is attributable to the changes in temperature as the flame moves away from the fuel.In other cases, such as a hazardous material, the color can be orange, green, blue, purple depending on the fuel...One things sure t…
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It depends on which theory of relativity you mean. The special theory of relativity has only one assumption, namely that the speed of light is constant (in vacuum!) and has the same value for each non-accelerating observer. Thus you can say the speed of light must always be conserved. In the genera…
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Fusion is when multiple nuclei are combined to form a heavier nucleus. For example, the fusion of 2 H atoms into a He atom. Fission is when one nucleus splits into multiple smaller nuclei. For example, when Uranium 235 splits into Ba and Kr nuclei. Fusion is the process that produces heat in stars…
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If you slam on the brakes of your car, a helium-filled balloon will move towards the BACK of the car. Since helium is lighter than air, a helium-filled balloon will float in air. This is an example of Archimedes Principle. This principle was first described by Archimedes, in the third century BC - …
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It is the attractive force that all matter possesses for other matter. We're pretty sure of that. We can, thanks to Newton, measure it and describe how it usually behaves. Einstein understood it as an effect of curved space/time, and not as matter dependent. Thanks to Newton and Einstein, we know e…
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"Non-uniform" motion is "accelerated" motion.
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If the mass of the dead star is high enough, gravity will overcome electron degeneracy pressure holding the dead star up. Electrons will fall from their ground state into the nuclei, turning protons into neutrons and all the nuclei will merge forming a neutron star held up by neutron degeneracy pres…
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Enables cars to move, rather than just spin tyres and go nowhere.
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yes
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A longitudinal wave.
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It is the sun.
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We hope so.
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The IQ test was not developed until after Einstein's death, so we don't know his IQ!
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resultant vector is a vector which will have the same effect as the sum of all the component vectors taken together.
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E=mc2 is the formula but the theories were called: the general theory of relativity about mass traveling at or faster than the speed of light while accelerating positively or negativelythe special theory of relativity about mass traveling at the speed of light while holding a steady speedThe formula…
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uptu top 100 engineering college ki list
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The four fundemental forces of nature are.Strong interactionWeak interactionElectromagnetismGravity
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Light has mass since it has energy. Energy depends on the wavelength/frequency. Einstein and Planck get credit for working this out. Using red light of wavelength 650nm travelling in a vacuum we get a mass of 3.4x10^-36 kg. The weight depends on the gravity, but on Earth that would weigh roughly …
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Decibels (dB)
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It's tempting to ask what you mean by backward, but unnecessary. The answer is no. Backward time travel is not possible under any circumstances.
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As a result of the work of both Einstein and Bose, light has been identified as both a wave known as electromagnetic radiation and as a particle called a photon. The photon is a force carrier known as a "boson", which has no mass. It can be absorbed, reflected, or refracted when in contact with any …
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There are many government college for B. Pharma under UPTU. Some of the colleges are Advance Institute of Biotech, BBS Institute of Pharmaceutical and HIMT college of pharmacy.
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Nothing within the Universe can travel faster than the speed of light, but the Universe itself expanded to most of its present size with a rapid expansion event very early during the Big Bang. This rapid expansion occured independently of the laws which function within the Universe (i.e. those which…
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Thought experiments.
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Centrifugal forces
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We're not sure what the question is. There is no "versus" here. The two statements are in no way contradictory, and they don't conflict. Einstein, and the implications he drew from the constancy of 'c' and the Lorentz-Fitzgerald contraction, deduced that no object with a non-zero rest-mass can ac…
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Acceleration = 0 Speed = constant Distance = (speed) x (time)
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Because we are just NOT that fast (also your body mass would be torn apart by the friction) As any massive object approaches the speed of light it proceeds to radiate gravitational waves. Therefore whatever energy goes into accelerating the object is quickly radiated away so there is no net increase…
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from 1st of august
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