Special and General Relativity Forum

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Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Undergrad Possibly simplistic question about massive moving objects
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Undergrad Is Time Travel Possible and How Does it Work?
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Undergrad CONCERN about relativity, need a quick answer
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Undergrad Why is speed of light 299 792 458 m / s
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Undergrad How does gravity affect the passage of time?
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Undergrad Composition of 2 Boosts in Special Relativity
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Undergrad Inelastic collision problem/ unequal masses.
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Undergrad Is the Twin Paradox Truly Unsolvable?
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Undergrad A problem with time dilation help?
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Undergrad Hydrogen atom to 90% the speed of light
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Undergrad Confusion regarding Time dilation ?
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Undergrad Our 'Background' Speed and How it Fits with Time Dilation
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Undergrad Speed of light in non inertial frames
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Undergrad Is the speed of expansion of the universe faster than light?
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Undergrad Is Faster than Light Time Travel Possible?
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Undergrad Speed of Gravity the Same in All Reference Frames?
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Undergrad Origins of the idea of a tachyon? (and a greeting)
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Undergrad Thoughts travelling faster than c
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Undergrad I remember reading somewhere about how a wormhole lets you see
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Undergrad Can We Physically Handle Extreme Speeds in Spacecraft and Simulated Gravity?
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Undergrad Would a Conveyor Belt from Earth to Mars Have a Time Delay?
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Undergrad Does the concept of a singularity defy the laws of nature?
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Undergrad Can a Box be Bigger on the Inside? | Dr. Who Fans
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Undergrad Discovering the Paradox of Being Your Own Grandfather in Futurama
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Undergrad Is E=m*c² the Key to Understanding the Universe's Equilibrium?
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Undergrad What Is the Time Dilation Formula and How Does Speed Affect Time?
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Undergrad Speed of Sound, Light, and Time?
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Undergrad Is the concept of a perpetual motion machine feasible in the realm of physics?
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Undergrad Sundial & Relativity: Inertial Frame Differences?
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Undergrad Humans travelling at light speed?
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Undergrad What Happens to Matter Inside a Black Hole?
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Undergrad 2 protons have less mass than combined
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Undergrad The paradox, is basically a theory about time travel.
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Undergrad So if space/time is a plain
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Undergrad Why Does Light Lose Energy with Universe Expansion?
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Undergrad E=mc2 How did Einstein get to this equation?
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Undergrad Understanding Einstein's General Relativity: A Simplified Approach
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Undergrad Magnetic field from Van De Graff
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Undergrad Understanding Mass and Energy in Special Relativity
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Undergrad Can Time Be Infinite?
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Undergrad Do Gravity Waves Exist? Understanding the Mechanics of Gravity Waves
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Undergrad What tests have been done to confirm the speed of gravity?
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Undergrad Why Can We Feel the Gravitational Field of a Black Hole?
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Undergrad PC cpu limitation ruining our movie promise
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Undergrad Mass and Light: Is There a Connection?
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Undergrad What is the maximum speed attainable by particles and objects in space?
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Undergrad Can the Energy in a Human Power the Entire Planet for a Week?
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Undergrad Solid angle , never seen derivative
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Undergrad Matter to Energy: Kinetic + Rest Mass?
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Undergrad Did Lorentz or Einstein theoretically derive special relativity?
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Undergrad What exactly is relativistic mass?
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Undergrad How would a trampoline solve the twin paradox in relativity?
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Undergrad Question about energy in C-O-M frame and Lab frame.
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Undergrad Gravitational Acceleration in Homogeneous Fields
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Undergrad Does Light Reach Objects Moving at High Speeds?
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Undergrad Does the Moon's gravity affect the Earth's gravity in a satellite's trajectory?
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Undergrad Difference Between Newton and Einstein
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Undergrad Why Does Light Bend Away From the Sun?
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Undergrad Question about the speed of light and relativity
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Undergrad If we go to space with the speed of 40000 km/hr and spend almost 5 yrs
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Undergrad How do you calculate the speed of a particle given its Total and Kinetic energy?
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Undergrad Speed of light is constant because of doppler effect?
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Undergrad Who Experiences 50 Light Years Differently: The Astronaut or Mission Control?
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Undergrad How Long Would Earth React to the Sun's Instant Disappearance?
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Undergrad Inertial vs accelerating frame
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Undergrad Questions on Stress-Energy Tensor: Definition & 0 Value
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Undergrad Age Difference in Space Travel: How Does it Happen?
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Undergrad Time Dilation Gamma Factor: New to STR, Confused?
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Undergrad Light emitting from an object moving near the speed of light.
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Undergrad Can Spaceships Travel Faster Than the Speed of Light?
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Undergrad That famous equation - a better understanding
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Undergrad Acceleration vs De-acceleration
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Undergrad Lenght contraction of a charged wire and time dilation?
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Undergrad How Does Earth's Gravity Accumulate?
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Undergrad How do Lorentz transformations show the relationship between time and space?
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Undergrad The Twin Paradox: Mike & Angela's Frame of Reference
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Undergrad Relativity Books: Advanced Reads for Engineering Student
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Undergrad What is the significance of taking the derivative of y=sin^-1(x)?
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Undergrad Twin Paradox: Explaining Symmetry & Age Difference
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Undergrad Anyone here play Portal? Portal + Relativity question
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Undergrad Help with special relativity (frames of reference)
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Undergrad Deriving the speed of light from the Pythagorean Theorem
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Undergrad Relativity Breakdown: Explained for Non-Scientists
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Undergrad Relativistic Space Travel: Fact or Fiction?
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Undergrad What is the kinetic energy of an object traveling at the speed of light?
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Undergrad Speed of light not a legitamate factor in relation to mass
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Undergrad When people talk about the current size of the observable universe
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Undergrad Why is there a universal speed limit, c, and why is it what it is?
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Undergrad What is the best way to be a relativist ?
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Undergrad The Conundrum of Duplicating Atoms in Time Travel
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Undergrad Falling into a black hole and then shining a light?
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Undergrad [Novice] Why isn't Time Space?
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Undergrad Variability of the speed of light
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Undergrad Is gravity a bigger mystery than charge?
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Undergrad Does the frequency of light change as I travel toward it?
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Undergrad Velocities - how relative are they really?
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Undergrad Simple relativity question [two ships]
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Undergrad General relativity and jet travel makes you fat?
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Undergrad Why does the stone stop before reaching the surface at the other end?
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Undergrad Can Gravity Affect the Laws of Physics?
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