Threads Tagged with time Thread / Thread Starter Last Post Replies Views So I found this problem in my 10th grade Physics workbook and since its test time tomorrow I must be able to work... Feb19-14 05:21 PM TSny 5 174 Introductory Physics Homework 1. The problem statement, all variables and given/known data Two stones are thrown simultaneously, one straight... Feb19-14 06:39 AM Ace. 4 147 Introductory Physics Homework I have a professor who typically spends, on average, about a third of each lecture pontificating about his personal... Feb18-14 05:01 PM Dembadon 11 496 General Discussion Hi, Basically I would like to learn about the beginning of time and I am wondering what literature I should read... Feb18-14 11:00 AM phinds 3 266 General Physics I am currently taking an undergraduate modern physics course that offers a brief overview of relativity. Let us... Feb18-14 08:49 AM Chestermiller 12 492 Special & General Relativity It is said that Relativity proves that if one travels near the speed of light that time slows down, i.e. that the twin... Feb18-14 06:38 AM DaleSpam 2 297 Special & General Relativity Hi everyone :) Starting off with a really simple question I'm seemingly too stupid to solve: For a heuristic... Feb17-14 11:05 AM zero_sum 2 281 General Math Hello, It is my understanding that in the case of two observers (A and B) passing each other at high speeds that due... Feb17-14 04:11 AM Nugatory 1 258 Special & General Relativity Consider our universe but with only two particles, say two protons. Inevitably they would orbit mutually about one... Feb16-14 07:12 PM DaleSpam 9 424 Quantum Physics 1. The problem statement, all variables and given/known data Position vs Time graph is given. It is a perfect... Feb16-14 05:01 PM jackarms 5 142 Introductory Physics Homework Hiya, folks. I've got what may or may not be a high-school level physics question, but frankly I've never taken a... Feb14-14 03:13 PM adt2 5 299 General Physics After time t, the probability of monochromatic absorption of the ground state |1> to the energy state |n> is given by:... Feb14-14 12:06 AM ChrisVer 10 383 Quantum Physics I am starting to learn Special and General realitivity by reading through Bernard F. Schutz's book "A First Course in... Feb13-14 06:40 PM pervect 9 413 Special & General Relativity hi guys, i just have a quick question concerning the Copenhagen interpretation of things. say there is a star, very... Feb13-14 03:23 PM DaleSpam 108 4,152 Quantum Physics It is said that the light we see from a star a million light years away is actually what happened a million years ago,... Feb13-14 11:55 AM phinds 6 1,021 Special & General Relativity We all very well know that, Earth has been made 4.5 billion years ago. Suppose, we are to explain the age of the star... Feb13-14 07:14 AM TumblingDice 5 504 Cosmology Does any uncertainty when measuring time? Can we measure time definitely(hundred percent correct) Feb13-14 06:00 AM Quarlep 4 265 General Physics Does anyone know how to calculate Magnetic Local Time for a position on earth, given the current Universal Time, and... Feb12-14 11:32 PM klimatos 1 501 Earth 1. The problem statement, all variables and given/known data The nozzle of a fire hose discharges water at a speed of... Feb12-14 03:39 AM CWatters 8 197 Introductory Physics Homework 1. The problem statement, all variables and given/known data I got a graph with time on the x-axis, and distance on... Feb11-14 07:29 PM Chestermiller 4 186 Introductory Physics Homework Hello! I am currently learning the theory of relativity, but have a hard time understanding the time dilation... Feb11-14 11:15 AM Nugatory 17 916 Special & General Relativity There are only two frame moving relative with each other at certain velocity. One frame see the other going right and... Feb10-14 10:22 AM Nugatory 1 277 Special & General Relativity The popular thought experiment states, that if of two identical twins one is left on earth an the other is embarked on... Feb10-14 10:14 AM scienalc 2 319 Special & General Relativity I had a quick question about Time Dilation and Length Contraction. Are the two just different ways of... Feb9-14 02:41 PM phyti 14 428 Special & General Relativity i was just reading the following article and had an interesting thought;... Feb8-14 11:58 PM bhobba 3 318 Quantum Physics hi everyone. i'm having trouble understanding the concept of proper time in general relativity. suppose we have... Feb7-14 07:04 PM pervect 31 780 Special & General Relativity The proper mean lifetime of ##\pi## mesons(pion) is ##2.6x10^{-8}s##. Suppose a beam of such particles has a speed of... Feb7-14 05:13 AM Rococo 3 225 Introductory Physics Homework I have an object at rest which accelerates at a variable rate before coming to rest again. At any given point I can... Feb6-14 10:50 PM rcgldr 21 405 Classical Physics "Quantum jump" is a somewhat misleading term because the transition is not instantaneous. We can assume that at any... Feb5-14 01:59 AM marcus 44 8,652 Beyond the Standard Model Double slit with time measurement ( 1 2 3 ... Last) Propose this measurement: http://parlevl0.home.xs4all.nl/forum/forum12b.GIF It is a well know interference... Feb4-14 04:56 PM DaleSpam 67 1,967 Quantum Physics 1. The problem statement, all variables and given/known data A particle is in a 1D harmonic oscillator potential.... Feb3-14 04:20 AM AlexCdeP 4 173 Advanced Physics Homework There are alot of people touting that an object in superposition is the same thing as an object being in various... Feb1-14 10:42 PM DaleSpam 36 1,457 Quantum Physics Hi In the Schwarzchild metric, the proper time is given by c^{2}dτ^{2} = (1- \frac{2\Phi}{c^2})c^2 dt^2 - r^2 dθ^2... Feb1-14 10:42 PM waitedavid137 10 435 Special & General Relativity Hi I regard, $$=0$$ but \Psi is a field-operator. I don't understand why the commutation of the derrivative of... Feb1-14 07:00 PM WannabeNewton 3 285 Quantum Physics Hi, could anyone help me out? The FLRW metric in spherical coordinates is: \;\; ds2 = dt2 - a(t)2(dr2 +... Feb1-14 05:53 PM Mordred 36 848 Special & General Relativity Hi everyone. I have a doubt on charge conjugation symmetry. Consider the Standard Model lagrangian with just the gauge... Feb1-14 01:18 PM Einj 0 506 High Energy, Nuclear, Particle Physics I'm in one spatial dimension. I want to know what the operator is that will turn \psi(x) into \psi(x + \frac{vt}{2}),... Feb1-14 12:33 PM vanhees71 7 294 Quantum Physics Hello I'm currently first year mechanical engineering student and I have some spare time. I want to take on a project... Jan31-14 01:15 PM berkeman 6 247 Mechanical Engineering 1. The problem statement, all variables and given/known data A rocket moves upward, starting from rest with an... Jan30-14 04:50 AM BvU 5 170 Introductory Physics Homework 1. The problem statement, all variables and given/known data If you are worried about safely driving after a party, I... Jan30-14 02:22 AM ehild 1 210 Introductory Physics Homework