Timeline for Objects colliding at relativistic speeds combined energy?
Current License: CC BY-SA 3.0
27 events
| when toggle format | what | by | license | comment | |
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| Aug 5, 2015 at 13:32 | answer | added | John Duffield | timeline score: 1 | |
| Aug 5, 2015 at 10:15 | comment | added | John Rennie | OK, I've added the fifth reopen vote so the question is open again. I've edited the title in an attempt to clarify it. | |
| Aug 5, 2015 at 10:14 | history | edited | John Rennie | CC BY-SA 3.0 |
Attempt to clarify title
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| Aug 5, 2015 at 10:11 | history | reopened |
Danu DanielSank Emilio Pisanty Kyle Kanos John Rennie |
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| Aug 4, 2015 at 20:51 | comment | added | Qmechanic♦ | Echoing @KyleKanos's comment, the title (v9) [which compares energy with speed] is not clear. | |
| Aug 4, 2015 at 20:38 | comment | added | Kyle Kanos | Though I am curious about the title Combined energy can surpass $c$? and why you think that $E\leq c$ is required. | |
| Aug 4, 2015 at 20:37 | comment | added | Kyle Kanos | ...isn't the energy (not the relative speed) involved in the collision higher... is exactly the point too! You might be interested in this other Physics.SE post as well | |
| Aug 4, 2015 at 20:35 | review | Reopen votes | |||
| Aug 4, 2015 at 20:53 | |||||
| Aug 4, 2015 at 20:34 | comment | added | Leonardo | @DanielSank sorry about that! out of nowhere 20+ edits came along! I must have missed yours... thanks for the corrections... | |
| Aug 4, 2015 at 20:26 | history | edited | DanielSank | CC BY-SA 3.0 |
Grammar, removed un-necessary bold face type
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| Aug 4, 2015 at 20:24 | history | edited | Danu | CC BY-SA 3.0 |
added 7 characters in body
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| Aug 4, 2015 at 20:24 | comment | added | DanielSank | People, this question is not asking about getting relative speeds higher than $c$. Read the actual question! Leonardo is asking about the total energy in the collision. Y'all have itchy close-voting fingers. | |
| Aug 4, 2015 at 20:18 | history | edited | Leonardo | CC BY-SA 3.0 |
edited title
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| Aug 4, 2015 at 20:17 | comment | added | DanielSank | @Leonardo, I made that edit to help you use proper English grammar and spelling. This helps people understand your question and makes it more likely that you'll get an answer. Rolling back an edit like that is not a good idea. Good luck using this site. | |
| Aug 4, 2015 at 20:16 | history | edited | Leonardo | CC BY-SA 3.0 |
edited title
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| Aug 4, 2015 at 20:15 | history | closed |
ACuriousMind♦ John Rennie Qmechanic♦ |
Duplicate of (Almost) double light speed, What is the relative speed of two near-light speed particles headed towards each other? [duplicate] | |
| Aug 4, 2015 at 20:15 | comment | added | DanielSank | Interestingly, you can think of adding velocities in special relativity as adding two hyperbolic angles! | |
| Aug 4, 2015 at 20:15 | history | rollback | Leonardo |
Rollback to Revision 2
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| Aug 4, 2015 at 20:15 | history | edited | DanielSank | CC BY-SA 3.0 |
grammar, spelling
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| Aug 4, 2015 at 20:13 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
edited tags; edited title
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| Aug 4, 2015 at 19:54 | comment | added | user81619 | The energy does combine. | |
| Aug 4, 2015 at 19:52 | history | edited | Leonardo | CC BY-SA 3.0 |
added 28 characters in body
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| Aug 4, 2015 at 19:51 | comment | added | Leonardo | @JohnRennie tks John i did not know that the beams were already in that setup. I do understand that the speed does not combine, but how about the total energy of the system? If the energy does not combine also, why do they bother rotating them to force a front collision? | |
| Aug 4, 2015 at 19:33 | review | Close votes | |||
| Aug 4, 2015 at 20:20 | |||||
| Aug 4, 2015 at 19:12 | comment | added | John Rennie | Hi Leonardo. The LHC collides protons moving at 0.999999991$c$ in one direction with protons moving at 0.999999991$c$ in the opposite direction. However as far as the protons are concerned the collision speed is still below $c$ because velocities don't simply add together when you get near the speed of light. The question I've linked as a duplicate explains what actually happens. | |
| Aug 4, 2015 at 19:09 | comment | added | John Rennie | possible duplicate of Double light speed | |
| Aug 4, 2015 at 19:05 | history | asked | Leonardo | CC BY-SA 3.0 |