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Pioneer Anomaly Solved By 1970s Computer Graphics
Frans Faase updated us on a Pioneer Mystery we've been following for many years: something is tugging Pioneer 10 & 11. A few years ago a theory surfaced but now "A new computer model of the way heat is emitted by various parts of the Pioneer spacecraft, and reflected off others, finally solves one of the biggest mysteries in astrophysics. Previous calculations have only estimated the effect of reflections. A computer modeling technique called Phong shading was used to work out exactly how the the emitted heat is reflected (PDF) and in which direction it ends up traveling. Taking into account the reflections on the antenna seem to make the anomaly disappear."
Speaking of 70s graphics... when I saw "Phong" I thought "Pong." Only natural. It did rock the world in its day.
So it seems, the mystery ain't a mystery after all... No more hookum about some "unknown" force. Glad to know.
The technique for Phong Shading was introduced in 1973 as an improvement to Gouraud Shading, but was too computationally intensive to be used for graphics back then. This is no longer the case.
How does it feel to be a liar with pants constantly on fire?
Oh, well. It was fun while it lasted.
Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
Taking all the fun out of our mysteries with their "facts" and "investigations."
everybody knows that. A much better aproximation to real life surfaces are the Oren–Nayar or Cook-Torrance models of the family of BRDFs.
Experiments and other stuff
Instead why don't they solve the radiosity equation at a 1 mm^2 resolution? That should be feasible with today's computing power, and indisputably give the correct answer.
But how exactly is heat contributing to this? Unlike most Slashdotters, I'm no self-professed rocket scientist. My understanding of space propulsion is that you throw some mass in the opposite direction of the one you want to travel in
... from Slava Turyshev which describes what they did to model the craft and show that heat could be the culprit.
http://www.planetary.org/programs/projects/pioneer_anomaly/update_20080519.html
Intron: the portion of DNA which expresses nothing useful.
I take this to mean they've finally received contact from Nibiru.
Janus is pulling them!
(just finished Pulling Ice. I'm sorry.)
Trolling is a art,
if it weren't for you meddling kids!
Radiosity being a 90s computer graphics term for calculation how radiation (heat and light) hit surfaces and are absorbed or re-emitted by them. It came from earlier studies on this not relating to computer graphics.
You can render your radiosity results using phong shading or other shading techniques.
http://lkml.org/lkml/2005/8/20/95
Imagine how well you'd model this using monte-carlo techniques / ray tracing.
I RTFA, but didn't find the results of their calculation. The old method yielded 67% of the effect, but they didn't say what the new method resulted in (other than get the "right" answer). Also I'd want to know error bars. Does the new answer +/- error bars overlap with the detected phenomena within the error bars of it's value?
http://en.wikipedia.org/wiki/Radiometer/
http://www.eclipse-chasers.com/tseAllias.html
When you're this old, let's just see how your probe looks in a phong!
I remember Phong as a rough approximation for some simplistic lighting models and surfaces.
For this anomaly, wouldn't someone be able to do a nice monte carlo simulation and get results as accurate as they want to establish a picture of the steady state conditions? They should be able to model the entire space craft including original heat source(s), other structures acting as thermal masses, reflectors, absorbers, and radiators, and apply known material properties for how each photon should behave statistically.
Or is it necessary to solve computationally using only 1970s vintage equipment?
Phong? Whew, that was what we used to use on Macintosh Infini D version 1.0 in the early 90s because the IIc was so slow. You would have thought they would have Ray Trace with Radiosity by now :o) ...
The purpose of existence is to make money.
Then you have to read it better, IMHO.
http://it.slashdot.org/comments.pl?sid=2061048&cid=35681060
(Hairyfeet's SUCH a dumbass, he doesn't know the diff. between STATICALLY ADDRESS IP BASED banners & DYNAMICALLY ADDRESSED ONES using host/domain names!)
LOL, I mean, ok - listen to his b.s. ALL YOU WANT, but only AFTER you read the URL from this website above, lol!
APK
P.S.=> Just "too, Too, TOO EASY - just '2EZ'", but then again? "Pwuffesuh HaiwyPheet" is only an "ITT Tech Boy" techie... lol! apk
Does the new answer +/- error bars overlap with the detected phenomena within the error bars of it's value?
If you read the paper itself, there's a graph on page 10 showing exactly that. The error bars on the measured size of the effect overlap almost completely with the error bars on this new calculation.
Direct thermal radiation off the front of the craft explains most of the effect. The "Pioneer anomaly" vanishes completely once you factor in radiation reflected off the antenna dish. It still warrants some more investigation and more papers pinning it down better, but in my opinion this issue can now be pretty solidly categorized as resolved.
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- - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
And now, let's solve the "Flyby Anomaly".
FTA: "These results account for between 44% and 96% of the reported value". Note: that quote is cherry-picked; if you want all the details, RTFA.
Your malicious disregard for basic communication makes me want to side with Hairyfeet on principle alone.
Also, you should know that I am a little embarrassed that I took the time to 6 posts in the thread you linked. The fact that you seem to have an encyclopedic knowledge of every post you've ever made here leads me to believe you take the goal of winning at internet way to seriously.
See subject: Especially since it's from one of HAIRYFEET's many trolling accounts (& IF you don't think that goes on here? Please... see the words of someone VERY respected on THAT account):
It just takes one Ubuntu sympathizer or PR flack to minus-moderate any comment. Unfortunately, once PR agencies and so on started paying people to moderate online communities, and to have hundreds of accounts each, things changed. - by Bruce Perens (3872) on Friday July 30 2010, @04:55PM (#33089192) Homepage Journal
So, do you *THINK* you're really "fooling anyone" Hairyfeet?
(LMAO - "NOT!")
APK
P.S.=> TO this, I will tell you EXACTLY how I do it (born that way, near photographic/eidetic memory):
"The fact that you seem to have an encyclopedic knowledge of every post you've ever made here leads me to believe you take the goal of winning at internet way to seriously." - by tophermeyer (1573841) on Thursday March 31, @04:11PM (#35682048)
Comes in handy when trolls like Hairyfeet screwup & troll me, which he did 1st to me this week, attempting to libel me... & that same memory brought up what VINDICATED me as well, easily... thank the good lord, I say! apk
Comes in handy when trolls like Hairyfeet screwup & troll me,
But probably not too helpful in talking to people.
APK, who are you? I apologize for my ignorance, but I'm not certain who you are and why people would seek to defame you. You should know that your anonymous postings and disjointed writing style make you seem less "persecuted intellectual" and more "schizophrenic homeless dude under a bridge".
He is a known troll and malware writer who follows around and trollbombs anyone who points out that even simple math shows his "invention" doesn't work.
There is a reason why everyone abandoned HOSTS files in the late 90s, and that is because they slow your PC down while giving NO protection from malware. it is simple math really, you have a large (estimates at 1.5 million+) dynamically shifting target, where sites become infected, cleaned, reinfected, thousands by the day, sometimes thousands by the hour, yet this loon is convinced that a static HOSTS file will magically protect you from malware.
Sadly this person is also a paranoid schizophrenic with a serious persecution complex who will follow you around, sometimes for months on end, so he can "trollbomb" any posts you place while calling anyone who doesn't join his AC sockpuppet army a "shill post" or a sockpuppet, while quoting from people that frankly wouldn't piss on him if he was on fire like Bruce Perens, and then quotes them in completely unrelated matters to boot.
So don't be surprised if Crazy Petey follows you around for a few days friend, you dared to say something that goes against his "I'm a leet hacker that everyone fears!" delusion, just as I have been followed off and on for months, with everyone that points out what a batshit loonie Petey is being accused of being part of some vast super HB Gary sockpuppet army controlled by me and the Illuminati. I used to think the guy was just a Twitter style troll, now sadly I think he seriously needs some help. It is a shame nobody can track this guy down and do an intervention, as just from his writing style you can tell he is coming off the rails.
ACs don't waste your time replying, your posts are never seen by me.
Oh, really? Then, I'd have to be the DUMBEST THERE IS then, because I've been showing the PLANET how to secure vs. that on Windows for 14++ years, to EXCELLENT ratings!
To wit/E.G.:
"He is a known troll and malware writer" - by hairyfeet (841228) on Thursday March 31, @05:45PM (#35683144)
So, does THIS link I showed here before, which was + 5 INFORMATIVE rated no less here:
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COMPUTER ASSOCIATES BUSTED FOR ACCOUNTING FRAUD:
http://news.slashdot.org/comments.pl?sid=1884922&cid=34350102
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NOT prove that much? Sure does!
In a way? Thanks - You're only allowing me to expose my false accusers publicly once again for the slime they are, & to vindicate myself of your libel... thank you!
Also - CA & others like they have done the same to Dr. Mark Russinovich of Microsoft, and Nir Sofer of NIRSOFT as well - calling THEIR wares, malware too, & they're KNOWN in this field as decent... so, I suppose I am in TRULY, "good company" on this account no less!
Again, IF I were a "malware maker/hacker-cracker"? I'd have to be the STUPIDEST one there is, because I also created the 1st guide for securing Windows, highly rated @ NEOWIN (as far back as 1998-2001) here:
http://www.neowin.net/news/apk-a-to-z-internet-speedup--security-text
AND, more currently, the MOST viewed & highly rated one there is for years now since 2008 online:
http://www.bing.com/search?q=%22HOW+TO+SECURE+Windows+2000%2FXP%22&go=&form=QBRE
Which has well over 300,000++ views online (actually MORE, but 1 site with 75,000 views of it went offline/out-of-business) & it's been made either:
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1.) An Essential Guide
2.) 5-5 star rated
3.) A "sticky-pinned" thread
4.) Most viewed in the category it's in (usually security)
---
Across 15-20 or so sites I posted it on back in 2008... have YOU done better, troll?
No, obviously.
(So much for your attempts @ "discrediting me" which ALWAYS FALLS APART IN THE LIGHT OF DOCUMENTED, CONCRETE & VERIFIABLE facts!)
APK
P.S.=>
"There is a reason why everyone abandoned HOSTS files" - by hairyfeet (841228) on Thursday March 31, @05:45PM (#35683144)
LOL, again: Oh, really? See here:
http://www.mvps.org/winhelp2002/hosts.htm
MANY 1,000's use them for better layered security, speed, & even ANONYMITY (vs. DNS request logs) & vs. DNSBL too!
HOW ABOUT MR. OLIVER DAY & SECURITYFOCUS.COM TOO?
E.G./to wit:
http://www.securityfocus.com/columnists/491
Dated from 2009 no less... that doesn't look like the 1990s!
(You've never even DISPROVED the 20 points I post that HELP USERS here either... lol!)
(SO - How stupid do you wish to keep appearing, hairyfeet?)
Apparently, even STUPIDER than HERE already:
http://it.slashdot.org/comments.pl?sid=2061048&cid=35681060
LMAO - It appears that you don't even KNOW the diff. between the word STATIC (IP addressed) or DYNAMIC (domain/hostname based)... and yet YOU claim to be a TECH? Please.
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"while giving NO protection from malware" - by hairyfeet (841228) on Thursday March 31, @05:45PM (#35683144)
Again, see Mr. Day's article above, AND mvps.org (the most highly rated HOSTS file on the planet & BOTH are NOT from the 1990's OR abandoned!)
OR my highly rated & W
http://slashdot.org/comments.pl?sid=2062904&cid=35684474
"APK, who are you?" - by tophermeyer (1573841) on Thursday March 31, @05:24PM (#35682916)
There you are... only SOME of it though, here's more (that covers articles I did for Windows security since 1997-to present that are highly rated, highly viewed, & referred to by others online for decades & that ACTUALLY work (& yes, HOSTS are a part, a free part, you already have)):
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Windows NT Magazine (now Windows IT Pro) April 1997 "BACK OFFICE PERFORMANCE" issue, page 61
(&, for work done for EEC Systems/SuperSpeed.com on PAID CONTRACT (writing portions of their SuperCache program increasing its performance by up to 40% via my work) albeit, for their SuperDisk & HOW TO APPLY IT, took them to a finalist position @ MS Tech Ed, two years in a row 2000-2002, in its HARDEST CATEGORY: SQLServer Performance Enhancement).
WINDOWS MAGAZINE, 1997, "Top Freeware & Shareware of the Year" issue page 210, #1/first entry in fact (my work is there)
PC-WELT FEB 1998 - page 84, again, my work is featured there
WINDOWS MAGAZINE, WINTER 1998 - page 92, insert section, MUST HAVE WARES, my work is again, there
PC-WELT FEB 1999 - page 83, again, my work is featured there
CHIP Magazine 7/99 - page 100, my work is there
GERMAN PC BOOK, Data Becker publisher "PC Aufrusten und Repairen" 2000, where my work is contained in it
HOT SHAREWARE Numero 46 issue, pg. 54 (PC ware mag from Spain), 2001 my work is there, first one featured, yet again!
Also, a British PC Mag in 2002 for many utilities I wrote, saw it @ BORDERS BOOKS but didn't buy it... by that point, I had moved onto other areas in this field besides coding only...
Being paid for an article that made me money over @ PCPitstop in 2008 for writing up a guide that has people showing NO VIRUSES/SPYWARES & other screwups, via following its point, such as THRONKA sees here -> http://www.xtremepccentral.com/forums/showthread.php?s=ee926d913b81bf6d63c3c7372fd2a24c&t=28430&page=3
Lastly, lately (this year)?
It's also been myself helping out the folks at the UltraDefrag64 project (a 64-bit defragger for Windows), in showing them code for how to do Process Priority Control @ the GUI usermode/ring 3/rpl 3 level in their program (good one too), & being credited for it by their lead dev & his team... see here -> http://ultradefrag.sourceforge.net/handbook/Credits.html
----
And, there you are (IF you're not just another one of "Pwuffesuh HaiwyPheet's many "alternate registered accounts" he uses here to libel others with!)
APK
P.S.=> Enjoy, & apologies if you're NOT 1 of his many bogus accounts, but that DOES go on here - in fact, see this much:
"It just takes one Ubuntu sympathizer or PR flack to minus-moderate any comment. Unfortunately, once PR agencies and so on started paying people to moderate online communities, and to have hundreds of accounts each, things changed." - by Bruce Perens (3872) on Friday July 30 2010, @04:55PM (#33089192) Homepage Journal
AND, hairyfeet uses them like mad... & you see HOW they're used - bogusly, & from a very, Very, VERY respected man in the art & sciences of computing... apk
http://www.facebook.com/topic.php?uid=254000146591&topic=16411
That is a copy of this site that seems to have gone offline recently:
http://www.suppressedscience.net/
Suppressed? :-) At the very least by marketplace forces? :-(
See also:
http://replay.waybackmachine.org/20090308132014/http://suppressedscience.net/physics.html
http://replay.waybackmachine.org/20090309114648/http://suppressedscience.net/
Stuff I wrote building on those ideas:
http://www.pdfernhout.net/to-james-randi-on-skepticism-about-mainstream-science.html
A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
I don't remember Pong having any shading, just a black screen with white rectangles!!!!
Sure enough, the cow costume was hanging up next to the superhero outfit and sailors uniform. (S,Spud)
Aw crap! I was hoping the anomaly might point to a new physical effect that could be used to make warp drive or something
Wow, man somebody is on the ball at Wikipedia. Inertia is one of my favorite topics and somebody has already corrected this entry which used to say:
http://en.wikipedia.org/wiki/Inertia
Source of Inertia
There is no single accepted theory that explains the source of Inertia. Various efforts by notable physicists such as Ernst Mach (see Mach's principle), Albert Einstein, D Sciama, and Bernard Haisch have all run into significant criticisms from more recent theorists. A review is given by Vesselin Petkov (2009)[12].
For a recent treatment of the issue see C. Johan Masreliez (2006)[13]. Masreliez has published more on inertia related issues that may also have a say in solving the Pioneer anomaly.