Ignorant, Again!
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Can someone tell me, in my doomed ignorance, how they timed that too-speedy particle arriving at CERN? I know it's elementary for those to whom it is. Mebbe Bruce Sherwood can give a briefing? I welcome. Peter Lissaman, Da Vinci Ventures Expertise is not knowing everything, but knowing what to look for. 1454 Miracerros Loop South, Santa Fe, New Mexico 87505,USA tel:(505)983-7728 ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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Until you get the real answer, I will offer what I thought I learned from the expert opinion around the table yesterday. It was done with GPS (!) Yeah. I know. I couldn’t believe it either. I kept worrying about the shrinking and stretching of time caused by the earth’s rotation, etc. Perhaps others who were at the table can correct. The best expert we had isn’t, alas, on this list. Nick From: [hidden email] [mailto:[hidden email]] On Behalf Of [hidden email] Can someone tell me, in my doomed ignorance, how they timed that too-speedy particle arriving at CERN? I know it's elementary for those to whom it is. Mebbe Bruce Sherwood can give a briefing? I welcome. ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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http://arstechnica.com/science/news/2011/09/neutrino-results-depend-on-exquisite-measurements-of-time-space.ars
On 9/24/11 12:23 PM, Nicholas Thompson wrote:
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Nifty, Carl. It was gps. Blimey. N From: [hidden email] [mailto:[hidden email]] On Behalf Of Carl Tollander http://arstechnica.com/science/news/2011/09/neutrino-results-depend-on-exquisite-measurements-of-time-space.ars Until you get the real answer, I will offer what I thought I learned from the expert opinion around the table yesterday. It was done with GPS (!) Yeah. I know. I couldn’t believe it either. I kept worrying about the shrinking and stretching of time caused by the earth’s rotation, etc. Perhaps others who were at the table can correct. The best expert we had isn’t, alas, on this list. Nick From: [hidden email] [[hidden email]] On Behalf Of [hidden email] Can someone tell me, in my doomed ignorance, how they timed that too-speedy particle arriving at CERN? I know it's elementary for those to whom it is. Mebbe Bruce Sherwood can give a briefing? I welcome. ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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In reply to this post by Nick Thompson
I am nervous to ask this question for fear that Peter and Doug will yell at me again, But does the earth’s rotation produce any Einsteinian effects? Nick From: [hidden email] [mailto:[hidden email]] On Behalf Of Marcus G. Daniels On 9/24/2011 12:23 PM, Nicholas Thompson wrote: It was done with GPS (!) PolaRx2e GPS receivers that end up providing 2.3 +/- 0.9 ns resolution ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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Tiny, but I get where you're going with it.
http://en.wikipedia.org/wiki/Frame_dragging
Carl On 9/24/11 2:47 PM, Nicholas Thompson wrote:
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In reply to this post by Nick Thompson
On Sat, Sep 24, 2011 at 2:47 PM, Nicholas Thompson <[hidden email]> wrote:
They yell because they love. -S ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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In reply to this post by Carl Tollander
On 9/24/2011 3:02 PM, Carl Tollander wrote:
Tiny, but I get where you're going with it. http://en.wikipedia.org/wiki/Frame_draggingHere's the report from Gravity Probe B that observed it: http://arxiv.org/abs/1105.3456 At 37.2 milli-arc seconds/yr, separated by 730km, it doesn't seem to be in the ballpark. > distance <- (730*1000*sin(((37.2/3600)/1000)*pi/180)) > period <- 365 * 24 * 3600 # seconds > speedOfLight <- 299792458 # meters/second > ((distance/period)/speedOfLight)*1e9 # nanoseconds [1] 1.392558e-08 ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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In reply to this post by Stephen Guerin
Yes, but it's a tough love.
--Doug
On Sat, Sep 24, 2011 at 3:06 PM, Stephen Guerin <[hidden email]> wrote:
Doug Roberts [hidden email] [hidden email] ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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In reply to this post by plissaman
Being not only ignorat but also skeptic, I put the neutrino speeds case at the same level of Piltdown Man. 2011/9/24 <[hidden email]>
Alfredo ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org |
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