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Black hole hums deepest note ever detected
http://www.cnn.com/2003/TECH/space/09/10/blackhole.music.reut/index.html
WASHINGTON, Sept 9 (Reuters) -- Big black holes sing bass. One particularly monstrous black hole has probably been humming B flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said this week. |
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Black hole hums deepest note ever detected
Cool! What would it take to put one of those things in the trunk of my
low-rider with the tinted windows? Rob Adelman wrote: http://www.cnn.com/2003/TECH/space/09/10/blackhole.music.reut/index.html WASHINGTON, Sept 9 (Reuters) -- Big black holes sing bass. One particularly monstrous black hole has probably been humming B flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said this week. |
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Black hole hums deepest note ever detected
I'm confused.
How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? CT |
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Black hole hums deepest note ever detected
shawn wrote:
Cool! What would it take to put one of those things in the trunk of my low-rider with the tinted windows? Everything, as you now know it. Rob Adelman wrote: http://www.cnn.com/2003/TECH/space/09/10/blackhole.music.reut/index.html WASHINGTON, Sept 9 (Reuters) -- Big black holes sing bass. One particularly monstrous black hole has probably been humming B flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said this week. -- ha |
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Black hole hums deepest note ever detected
"Charles Thomas" wrote in message ... I'm confused. How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". It's a "tone" to any entity that can hear it, I would say. Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? Not by humans it won't. But that doesn't matter really. I tone is a tone. Many animals right here on our own planet hear "tones" that we don't. Yet, they still exist and are considered tones non the less. |
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Black hole hums deepest note ever detected
(Michael Dines) wrote:
Charles Thomas wrote: I'm confused. How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? And, since black holes aren't in an atmosphere there's no audio waves. And because of their gravity light waves can't escape - so how do they propagate this hum? It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. Harvey Gerst Indian Trail Recording Studio http://www.ITRstudio.com/ |
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Black hole hums deepest note ever detected
Charles Thomas wrote in message ...
I'm confused. How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". You perceive it as a pulse because human hearing apparatus can't resolve a 1Hz tone. Theoretically another lifeform could. (In fact, don't elephants hear down into the sub-single digit frequencies?) Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? Not by humans, no. But we can extrapolate the note if we agree that any periodic vibrations in an elastic medium can be called "sound". My problem with the article is with the notion that regularly recurring EM pulses are the same thing as periodic vibrations... and even if we can agree that "star plasma" (or whatever the goo that's getting compressed & rarefacted by these EM pulses is called) constitutes an elastic medium, there's no continuous elastic medium between this black hole and our solar system, so it's kind of a If A Tree Falls In The Forest thought experiment at best. The "note", even if our hearing apparatus could resolve a frequency that low, is a localized phenomenon. It's not being broadcast towards Earth, it's confined to that (very) distant neighborhood. Nice sentiment, though. |
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Black hole hums deepest note ever detected
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#9
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Black hole hums deepest note ever detected
"shawn" wrote in message ... LeBaron & Alrich wrote: shawn wrote: Rob Adelman wrote: http://www.cnn.com/2003/TECH/space/09/10/blackhole.music.reut/index.html WASHINGTON, Sept 9 (Reuters) -- Big black holes sing bass. One particularly monstrous black hole has probably been humming B flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said this week. Cool! What would it take to put one of those things in the trunk of my low-rider with the tinted windows? Everything, as you now know it. Good point. And with those light-swallowing properties, I guess the tinted windows aren't strictly necessary. Depends on what side of the hole you're on. LOL...I feel like we all just smoked a ton of weed. :-P |
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Black hole hums deepest note ever detected
wrote...
I'm confused. How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". They say 57 octaves below middle C... Is that 1hz? For some reeason the sceintists say the intensity of the the tone is comparable to human speech. Well if black holes where matter ends is a Bb, may where matter enters the Universe produces an F note. Five - One resolution and such. Will Miho NY Music & TV Audio Guy Fox And Friends/Fox News "The large print giveth and the small print taketh away..." Tom Waits |
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Black hole hums deepest note ever detected
"WillStG" wrote in message ... They say 57 octaves below middle C... Is that 1hz? No, it's much lower than that. It's approximately 0.000000000000003 Hz. Hal Laurent Baltimore |
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Black hole hums deepest note ever detected
"Buster Mudd" wrote in message om... snip Not by humans, no. But we can extrapolate the note if we agree that any periodic vibrations in an elastic medium can be called "sound". My problem with the article is with the notion that regularly recurring EM pulses are the same thing as periodic vibrations... I have a VLF (Very Low Frequency) receiver that converts EM radiation in the range of ~ 20 kHz and under into acoustic energy so a human can hear it. Out in the wopwop, far enough from electrical power lines, you can listen to the sounds of earth's atmosphere. It's mostly from distant lightning strikes and sounds like sizzling bacon. Consider the possibility that some creature, somewhere, might have an organ or two that could do what my VLF receiver+amp+ears do; that is, "hear" the EM radiation. Bleeps, Phil / Houston and even if we can agree that "star plasma" (or whatever the goo that's getting compressed & rarefacted by these EM pulses is called) constitutes an elastic medium, there's no continuous elastic medium between this black hole and our solar system, so it's kind of a If A Tree Falls In The Forest thought experiment at best. The "note", even if our hearing apparatus could resolve a frequency that low, is a localized phenomenon. It's not being broadcast towards Earth, it's confined to that (very) distant neighborhood. Nice sentiment, though. |
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Black hole hums deepest note ever detected
I could have the math wrong, but I think 57 octaves below middle C
works out to about one cycle every 16 million years or so. For some reason, I'm not all that impressed. Charles Thomas... Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? |
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Black hole hums deepest note ever detected
Michael Dines wrote: And, since black holes aren't in an atmosphere there's no audio waves. And because of their gravity light waves can't escape - so how do they propagate this hum? I'm going to take this up on sci.physics to be sure but I don't believe this is a sound wave. It may be the relic or fossil of one but I am pretty sure that the density of intergalactic gas (and this is intergalactic, not interstellar) is insufficient for there to be anything like an acoustic pressure or the pressure differential which is necessasary for there to be an acoustic wave. The molecules there are at the level of one (or thereabouts) per cubic meter, IIRC, and at that distance from each other they just couldn't exert the mutual electrostatic repulsion and interaction that causes pressure. OTOH, if they were ions rather than molecules I suppose it could be possible. I'll bet it is just density striations that are propegating inertially away from whatever gave them that inertia rather than true acoustic waves. They could possibly be a frozen sound field from a time when the medium was dense enough to support sound but intuition tells me that such a wave would have damped out first rather than being frozen. Bob -- "Things should be described as simply as possible, but no simpler." A. Einstein |
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Black hole hums deepest note ever detected
Harvey Gerst laid this on me:
(Michael Dines) wrote: Charles Thomas wrote: I'm confused. How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? And, since black holes aren't in an atmosphere there's no audio waves. And because of their gravity light waves can't escape - so how do they propagate this hum? It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. Harvey Gerst Indian Trail Recording Studio http://www.ITRstudio.com/ The scientific information available on this noosgroop is overwhelming at times. Sean |
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Black hole hums deepest note ever detected
Rob Adelman wrote:
http://www.cnn.com/2003/TECH/space/09/10/blackhole.music.reut/index.html WASHINGTON, Sept 9 (Reuters) -- Big black holes sing bass. One particularly monstrous black hole has probably been humming B flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said this week. Great. More research will probably reveal they hum Louie, Louie, just down 57 octaves. Bob Smith BS Studios we organize chaos http://www.bsstudios.com |
#17
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Black hole hums deepest note ever detected
On Wed, 10 Sep 2003 16:31:30 -0500, Harvey Gerst
wrote: It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. What's the best mic for recording a black hole in space? -- Willie K. Yee, M.D. http://www.bestweb.net/~wkyee Developer of Problem Knowledge Couplers for Psychiatry http://www.pkc.com Webmaster and Guitarist for the Big Blue Big Band http://www.bigbluebigband.org |
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Black hole hums deepest note ever detected
Harvey Gerst wrote:
(Michael Dines) wrote: Charles Thomas wrote: I'm confused. How "low" can you really get? I mean... 1 hz is just a pulse every second. It's not really a "tone". Isn't everything below about 20 hz just a bunch of pulses in decreasing frequency? It's not going to be heard as a "note" of any kind is it? And, since black holes aren't in an atmosphere there's no audio waves. And because of their gravity light waves can't escape - so how do they propagate this hum? It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. Wow, that's straight outta the Pope Chute! -- ha |
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Black hole hums deepest note ever detected
Willie K.Yee, M.D. wrote:
On Wed, 10 Sep 2003 16:31:30 -0500, Harvey Gerst wrote: It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. What's the best mic for recording a black hole in space? Easy, one that works to pick up action in gas down to point-fuggedaboutit hertz. No biggie. I think Gerst & Dorsey might could do it. -- ha |
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Black hole hums deepest note ever detected
"LeBaron & Alrich" wrote in message .. . Willie K.Yee, M.D. wrote: On Wed, 10 Sep 2003 16:31:30 -0500, Harvey Gerst wrote: It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. What's the best mic for recording a black hole in space? Easy, one that works to pick up action in gas down to point-fuggedaboutit hertz. No biggie. I think Gerst & Dorsey might could do it. -- ha id try a contact mic... but you would have to glue it to the exterior of the black hole |
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Black hole hums deepest note ever detected
"LeBaron & Alrich" wrote in message ... Bob Smith wrote: Great. More research will probably reveal they hum Louie, Louie, just down 57 octaves. So you'll only need one mic! -- ha they must be stoned if they hum because they forget the words to louie louie. actully if you speed it up and play it backwards it says "elvis is here" |
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Black hole hums deepest note ever detected
"tim perry" wrote in message et... "LeBaron & Alrich" wrote in message .. . Willie K.Yee, M.D. wrote: On Wed, 10 Sep 2003 16:31:30 -0500, Harvey Gerst wrote: It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. What's the best mic for recording a black hole in space? Easy, one that works to pick up action in gas down to point-fuggedaboutit hertz. No biggie. I think Gerst & Dorsey might could do it. -- ha id try a contact mic... but you would have to glue it to the exterior of the black hole Don't forget to invert the phase to counteract all that sucking going on . . .. John L Rice |
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Black hole hums deepest note ever detected
"Bob Cain" wrote in message ... Michael Dines wrote: And, since black holes aren't in an atmosphere there's no audio waves. And because of their gravity light waves can't escape - so how do they propagate this hum? I'm going to take this up on sci.physics to be sure but I don't believe this is a sound wave. It may be the relic or fossil of one but I am pretty sure that the density of intergalactic gas (and this is intergalactic, not interstellar) is insufficient for there to be anything like an acoustic pressure or the pressure differential which is necessasary for there to be an acoustic wave. The molecules there are at the level of one (or thereabouts) per cubic meter, IIRC, and at that distance from each other they just couldn't exert the mutual electrostatic repulsion and interaction that causes pressure. OTOH, if they were ions rather than molecules I suppose it could be possible. I'll bet it is just density striations that are propegating inertially away from whatever gave them that inertia rather than true acoustic waves. They could possibly be a frozen sound field from a time when the medium was dense enough to support sound but intuition tells me that such a wave would have damped out first rather than being frozen. That's EXACTLY what I was thinking. LOL... Actually, I was thinking something along the lines of "my head hurts...I wonder if Taco Bell is still open" |
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Black hole hums deepest note ever detected
Rob Adelman wrote in message ...
http://www.cnn.com/2003/TECH/space/09/10/blackhole.music.reut/index.html WASHINGTON, Sept 9 (Reuters) -- Big black holes sing bass. One particularly monstrous black hole has probably been humming B flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said this week. Look here... http://body-mind.com/bmrpg2aa.html Site sells cd's or he http://www.hobbyspace.com/MultiMedia/index.html#Sounds for cool links/info/audio samples... I have one cd with a bunch of this kind of this stuff on it... I love it, picked it up for about 3 bucks one time in the New-age section of course... I don't really recall the title of said release right now but I guess mine is kind of a "Best of..." like "Yaweh... Live at the Milky Way..." |
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Black hole hums deepest note ever detected
area242 wrote: "Bob Cain" wrote in message I'll bet it is just density striations that are propegating inertially away from whatever gave them that inertia rather than true acoustic waves. They could possibly be a frozen sound field from a time when the medium was dense enough to support sound but intuition tells me that such a wave would have damped out first rather than being frozen. That's EXACTLY what I was thinking. LOL... Hey, this is some serious ****, dude. ;-) Bob -- "Things should be described as simply as possible, but no simpler." A. Einstein |
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Black hole hums deepest note ever detected
"Willie K.Yee, M.D." wrote in message ... On Wed, 10 Sep 2003 16:31:30 -0500, Harvey Gerst wrote: It's precisely because light waves can't escape, black holes are forced to hum; without light, they can't see the lyrics. What's the best mic for recording a black hole in space? Willie K. Yee, M.D. http://www.bestweb.net/~wkyee I reckon a VACUUM tube mic might do the job... -- John Cafarella EOR Studio Melbourne Australia [ cafarellaj at powertel dot com dot au ] |
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Black hole hums deepest note ever detected
So what's the best mic under $500 to record a black hole?
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Black hole hums deepest note ever detected
Charles Thomas wrote in message ...
If that's the case then isn't something that pulses only once every billion or so years really putting out a very low note? In the very simple abstract sense, yes. Well, if it just "pulses" once every billion years that not might fit the description, but if it oscillates with a period of 1,000,000,000 years that _would_ count Though since music as a concept is almost entirely a human endeavor, perhaps it is misleading to refer to any frequency outside the range of human hearing as a "note". It's probably easier to grasp if you substitute the word "tone" for "note". (And I'm fairly confident that if the astronomers could record this black hole & then transpose it up 30-some octaves, what we would hear would not sound much like a Bb note, but more like a melange of noise & garbage that had a resonant peak in the Bb neighborhood.) Again, it's a thought experiment: If you can't hear it (or if you aren't there to hear it) does it make a sound? Does music by definition have to be heard? |
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Black hole hums deepest note ever detected
"John L Rice" wrote in message ...
Don't forget to invert the phase to counteract all that sucking going on . . . Damn, no wonder all my band recordings come out lousy: I forgot to invert the phase to counteract all that sucking going on! |
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Black hole hums deepest note ever detected
"Buster Mudd" wrote in message om... "John L Rice" wrote in message ... Don't forget to invert the phase to counteract all that sucking going on .. . . Damn, no wonder all my band recordings come out lousy: I forgot to invert the phase to counteract all that sucking going on! LOL! |
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Black hole hums deepest note ever detected
Buster Mudd wrote:
Charles Thomas wrote... If that's the case then isn't something that pulses only once every billion or so years really putting out a very low note? In the very simple abstract sense, yes. Well, if it just "pulses" once every billion years that not might fit the description Seems like it'd work fine for lotsa rap. -- ha |
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Black hole hums deepest note ever detected
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Black hole hums deepest note ever detected
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Black hole hums deepest note ever detected
In rec.audio.pro, "area242" wrote:
"Bob Cain" wrote in message ... Michael Dines wrote: And, since black holes aren't in an atmosphere there's no audio waves. And because of their gravity light waves can't escape - so how do they propagate this hum? I'm going to take this up on sci.physics to be sure but I don't believe this is a sound wave. It may be the relic or fossil of one but I am pretty sure that the density of intergalactic gas (and this is intergalactic, not interstellar) is insufficient for there to be anything like an acoustic pressure or the pressure differential which is necessasary for there to be an acoustic wave. You may be thinking of audible frequencies. I'm sure anything near or above 1 Hz, or even one cycle per day, would be way too high to propagate. The molecules there are at the level of one (or thereabouts) per cubic meter, IIRC, and at that distance from each other they just couldn't exert the mutual electrostatic repulsion and interaction that causes pressure. I can see how this would be an "acoustic" wave, because it's such a low frequency that it CAN propagate. At the 'peak' the density could be 1.2 molecules per cubic meter. Admittedly this is still low, but you don't have to have interactions very often to 'push up' the density of the gas further away over the centuries, then the 'trough' comes along and the density is only 0.8 molecules per cubic meter, and likewise this """partial vacuum""" will eventually propagate. OTOH, if they were ions rather than molecules I suppose it could be possible. I'll bet it is just density striations that are propegating inertially away from whatever gave them that inertia rather than true acoustic waves. They could possibly be a frozen sound field from a time when the medium was dense enough to support sound but intuition tells me that such a wave would have damped out first rather than being frozen. That's EXACTLY what I was thinking. LOL... Actually, I was thinking something along the lines of "my head hurts...I wonder if Taco Bell is still open" So did the person at the Taco Bell drive-thru know? |
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Black hole hums deepest note ever detected
In article , Charles Thomas
says... In article , (Buster Mudd) wrote: Again, it's a thought experiment: If you can't hear it (or if you aren't there to hear it) does it make a sound? Does music by definition have to be heard? I don't know man. I've put out 4 or 5 CDs that haven't been heard by too many folks. Maybe there's really no music on them. CT That is a great reply! Jason Jason Spartz Web: www.mudstonemusic.com E-mail: |
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Black hole hums deepest note ever detected
Ben Bradley wrote:
This reminds me of the tree-falling-in-the-forest question: Is there a species out in space that's long-lived enough and with hearing that goes low enough to hear this 'tone'? What if the universe is a life form? -- ha |
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Black hole hums deepest note ever detected
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#38
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Black hole hums deepest note ever detected
(Ben Bradley) wrote:
In rec.audio.pro, (LeBaron & Alrich) wrote: Willie K.Yee, M.D. wrote: What's the best mic for recording a black hole in space? Easy, one that works to pick up action in gas down to point-fuggedaboutit hertz. No biggie. I think Gerst & Dorsey might could do it. Use a barometer, and just write down the reading every 100 years or so. We better record it at exactly midnight every 36,525 days. Just recording it "every 100 years" by the calendar would add jitter from leap years and such. You wouldn't want to be at the end of a 500 million year recording and then find out it has jitter. Naw, I'm just gonna make it into an .mp3 anyway, so jitter's not all that important. Harvey Gerst Indian Trail Recording Studio http://www.ITRstudio.com/ |
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Black hole hums deepest note ever detected
On Thu, 11 Sep 2003 13:39:11 -0500, Harvey Gerst
wrote: (Ben Bradley) wrote: We better record it at exactly midnight every 36,525 days. Just recording it "every 100 years" by the calendar would add jitter from leap years and such. You wouldn't want to be at the end of a 500 million year recording and then find out it has jitter. Naw, I'm just gonna make it into an .mp3 anyway, so jitter's not all that important. You kids turn that racket DOWN! God |
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Black hole hums deepest note ever detected
Hank wrote: What if the universe is a life form? A life form with tinnitus? Chris |
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