tag:blogger.com,1999:blog-1592992209402300549.post2637121179666746663..comments2024-03-27T19:38:49.490-04:00Comments on The Silicon Graybeard: Parker Solar Probe Achieves a Major Mission Goal SiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-1592992209402300549.post-67010473037341949852021-12-17T21:07:25.745-05:002021-12-17T21:07:25.745-05:00Leave a link when you say something like that. I&...Leave a link when you say something like that. I'd like to go read. <br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-81964032704125727072021-12-17T19:57:59.320-05:002021-12-17T19:57:59.320-05:00Here's to old farts and their old blog posts. ...Here's to old farts and their old blog posts. I did one about the Parker Solar Probe back in 2018.Chuck Pergielhttps://www.blogger.com/profile/14473338620167201696noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-60941939853227022752021-12-16T14:10:46.414-05:002021-12-16T14:10:46.414-05:00On the contrary, I thought you were actually expre...On the contrary, I thought you were actually expressing genuine interest in relativity. I was even going to go as far as to give you cites to some of the papers so that you could read them yourself. My mistake; I'm sorry.<br /><br />I am also not going to respond to your comment because it is apparent that you are in pain from your anger and vitriol. I will pray for you.<br /><br />With all sincerity, may God bless you and have a Merry Christmas.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-57938812878912051942021-12-15T22:19:41.339-05:002021-12-15T22:19:41.339-05:00Dear Anonymous,
Thanks for checking the box marke...Dear Anonymous,<br /><br />Thanks for checking the box marked "high-functioning Asperger's".<br /><br />When you can put an instrumentation package on an accelerated particle, instead of merely extrapolating nuclear decay rates from sub-atomic ephemera, you'll have a point to your pedantry, and science will have a far more substantial data-point, which was that for which I expressed a desire. The "anything" explicitly referenced was "any man-made object", something your punctilious yet pointless reply failed to note (probably because the possessive use of the pronoun "we" escaped your otherwise detailed attention).<br /><br />The day mankind creates a particle <i>ex nihilo</i>, and someone then <i>accelerates it to 450,000 MPH</i> your reply will actually be on-topic, and "we" will have something else <i>of ours</i> moving as fast as the Parker probe solar experiment referenced from the outset, rather than merely playing pinball with one of Nature's pre-extant tiny bits and bobs.<br /><br />I'm frankly surprised that you didn't simply refer us all to experiments in turning on a light, and moving <i>that product</i> at the speed of light(!), which would have been a reply observation roughly 1488 times more clever.<br /><br />So now, we have something at which to look forward.Aesophttps://www.blogger.com/profile/07834464741531503378noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-48635179641356647692021-12-15T17:45:46.502-05:002021-12-15T17:45:46.502-05:00It's all relative.It's all relative.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-81609305511374685192021-12-15T16:54:35.536-05:002021-12-15T16:54:35.536-05:00To say that we have "never" had anything...To say that we have "never" had anything going 450,000mph is not correct. All kinds of particles (which have specific decay rates) have been accelerated near the speed of light. That has been done since the 1950's. And time dilation measurements (which is what you are referring to) have been done since then. Essentially, you accelerate something (like a muon or pion) near the speed of light (like 0.99c) and measure its decay time. One of the favorite experiments, if I remember correctly, is to use a proton beam (at something like 600MeV) to generate a muon beam, which is itself accelerated. The decay time for the muon is lengthened due to time dilation. I am also pretty sure that an experiment like that was done at FNAL in the late 90's when I was there.<br /><br />If you really want to see it, I am sure that you can find Phys Rev papers from the 50's, 60's, and 70's that describe both the experimental setup and results.<br /><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-58511715318531306082021-12-15T13:02:56.442-05:002021-12-15T13:02:56.442-05:00This comment has been removed by a blog administrator.Ayush Rethaliyahttps://www.blogger.com/profile/06034129067262816137noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-38510624143963756462021-12-15T06:24:08.673-05:002021-12-15T06:24:08.673-05:00Noted, SiG, but the point would be to show an exac...Noted, SiG, but the point would be to show an exact correlation based on the tremendous speeds achieved.<br /><br />Airplanes and space flight have already shown a differential, but GPS satellites are only moving at about 9,000 MPH, and as you said in the OP, we've <i>never</i> had anything going 450,000 MPH before now, and that, plus the incredible mass of the Sun, should be having a ridiculously huge time shift effect.<br /><br />I just want to see it.<br /><br />Based just on the velocity difference, that should be a daily increase of 2.25 <i>million</i> nanoseconds.Aesophttps://www.blogger.com/profile/07834464741531503378noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-1522667899156402712021-12-14T22:29:23.725-05:002021-12-14T22:29:23.725-05:00And all the long-distance probes are also showing ...And all the long-distance probes are also showing the time-dilation effect. There's a small but measurable difference between what should be the bounce-back signal time and what it actually is.<br /><br />And will be real interesting once both Voyagers leave the effects of our solar system and go into true 'outer space.' Will they survive the gravity waves? Will other things happen to them? Can't wait to find out.Beanshttps://www.blogger.com/profile/15293778848879361153noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-34599843066691224772021-12-14T21:44:18.644-05:002021-12-14T21:44:18.644-05:00Your GPS does that verification every day. It'...Your GPS does that verification every day. It's probably the only thing in daily life that depends on relativistic corrections to work properly. <br /><br />For GPS satellites time slows about 7,000 nanoseconds per day as compared to a stationary receiver just due to their speed. <br /><br />Clock slowing due to position in the gravity well: gravitational effects speed the satellite atomic clocks by about 45,000 nanoseconds. 45,000 nsec faster – 7,000 nsec slower due to time dilation means the clocks are 38,000 nsec per day faster for the GPS satellites. Radio waves travel about 1 foot per nanosecond, so without designing for the relativistic effects, the distance measurements to each satellite would be off by 38,000 feet (or about 7 miles) per day. In two days, 14 miles off, and so on. <br /><br />There's a pdf from the National Institutes of Standards and Technology, <br />https://tf.boulder.nist.gov/general/pdf/1229.pdf<br /><br />Part of blog post I did in 2015. <br />https://thesilicongraybeard.blogspot.com/2015/06/techy-tuesday-is-relativity-relevant-to.html<br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-24980381984737934642021-12-14T20:57:40.907-05:002021-12-14T20:57:40.907-05:00The next question is, at those speeds, why aren...The next question is, at those speeds, why aren't we slinging a probe to do something similar, and having it broadcast atomic clock readings to see how slow time moves at those speeds, just to double-check Albert E.'s math ...?Aesophttps://www.blogger.com/profile/07834464741531503378noreply@blogger.com