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Have anyone built black hole model already ?

[email protected] All Messages By This Member #108635 Hi, : I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ? Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ? Thank you very much Best regards.
Andy All Messages By This Member #108636 Black hole?? I think you sent this about 130 days too early. Andy
[email protected] All Messages By This Member #108637 Hi, Andy: Thank you. I don't mind to put an alert event in the schedule at the day which 130 days later than today, to remind me ask this again, if you could have the answer, 130 days is very worthful than this unreachable answer. :-) Have a nice day ! ---In LTspice@..., <ai.egrps@...> wrote : Black hole?? I think you sent this about 130 days too early. Andy
John Woodgate All Messages By This Member #108643 开云体育 Yes, there are many models of black holes, but none, I suppose, that are compatible with LTspice! No existing models are considered satisfactory. More research is, of course, needed. There is a good explanation of the distorting effects of black hole gravity on space-time in 'From Eternity to Here' by Sean Carroll, ISBN9781-85168-795-4. If the Universe is a black hole (as has indeed been suggested), we would almost certainly not be able to prove it, because we are inside it. Your question about 'outside it' is meaningless in terms of what we can know, and may be absolutely meaningless, by which I mean that if there are other black hole Universes, that might observe ours, no-one there could tell what is happening inside our Universe. Opinion is divided on whether other Universes exist, and whether they could have different Laws of Physics, such as you suggest, where time-travel is easy and three-dimensional, but space is one-dimensional and space travel is not easy. Note that physical bodies cannot exist in a Universe with fewer than two space dimensions, and living bodies as we know them require three dimensions. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-23 03:13, ericsson.sunshine@... [LTspice] wrote: toggle quoted message Show quoted text ? Hi, : I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ? Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ? Thank you very much Best regards.
[email protected] All Messages By This Member #108693 Hello, John: Thank you for the replies. Though several days ago, I would like someone could suggest some materials (textbook) about the semiconductors, electron-hole pairs, carriers, etc. Everything needed for a SPCE modeling. I even don't have the concept of where to begin. (Though I have heard "CMOS circuit design layout and simulation", but I am not sure if that's enough. And haven't done reading it yet.) Though same "hole" things in this thread, but size is completely different. I have less things to say about black hole and the space things, I agree what you have said about the 1-dimension or 3-dimension, that's what I am familiar about, too. The idea is just an illusion. As you said , no one could prove it. Especially this/(those) body(ies) none exist in space (has no dimensions/size). No bodies...so that, I just think if the time-space is exchanged, time could be traveled, and space couldn't be traveled, but still in it, how to explain ? does that mean, fully filled the space , feel the all space ? Have (in) it all, but couldn't travel move forward/backward. Just some interesting thoughts, has anyone ever dreamed about "being a small fish pursuit by a bigger one, and felt the bloody mouth of the hunter", thus feel the feeling/thoughts of the instances ? Actually, this shouldn't be discussed here, so that, in fact, what I really hope to learn is , more inspirations about SPICE modeling. If you could kindly help more inspirations. Thank you very much. Best regards. ---In LTspice@..., <jmw@...> wrote : Yes, there are many models of black holes, but none, I suppose, that are compatible with LTspice! No existing models are considered satisfactory. More research is, of course, needed. There is a good explanation of the distorting effects of black hole gravity on space-time in 'From Eternity to Here' by Sean Carroll, ISBN9781-85168-795-4. If the Universe is a black hole (as has indeed been suggested), we would almost certainly not be able to prove it, because we are inside it. Your question about 'outside it' is meaningless in terms of what we can know, and may be absolutely meaningless, by which I mean that if there are other black hole Universes, that might observe ours, no-one there could tell what is happening inside our Universe. Opinion is divided on whether other Universes exist, and whether they could have different Laws of Physics, such as you suggest, where time-travel is easy and three-dimensional, but space is one-dimensional and space travel is not easy. Note that physical bodies cannot exist in a Universe with fewer than two space dimensions, and living bodies as we know them require three dimensions. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-23 03:13, ericsson.sunshine@... [LTspice] wrote: toggle quoted message Show quoted text ? Hi, : I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ? Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ? Thank you very much Best regards.
[email protected] All Messages By This Member #108694 Also, sometimes when I came cross the streets, I saw some ignorant little boys playing and sitting fat men aside , I always hope/remind myself, I should fulfill my mind soul, brain more, such that I could admire the life, instead of the eternity boring, collapse, when seeing all this. So, how about do me a favor, help delight me more, the SPICE modeling..... Thank you very much. ---In LTspice@..., <ericsson.sunshine@...> wrote : Hello, John: Thank you for the replies. Though several days ago, I would like someone could suggest some materials (textbook) about the semiconductors, electron-hole pairs, carriers, etc. Everything needed for a SPCE modeling. I even don't have the concept of where to begin. (Though I have heard "CMOS circuit design layout and simulation", but I am not sure if that's enough. And haven't done reading it yet.) Though same "hole" things in this thread, but size is completely different. I have less things to say about black hole and the space things, I agree what you have said about the 1-dimension or 3-dimension, that's what I am familiar about, too. The idea is just an illusion. As you said , no one could prove it. Especially this/(those) body(ies) none exist in space (has no dimensions/size). No bodies...so that, I just think if the time-space is exchanged, time could be traveled, and space couldn't be traveled, but still in it, how to explain ? does that mean, fully filled the space , feel the all space ? Have (in) it all, but couldn't travel move forward/backward. Just some interesting thoughts, has anyone ever dreamed about "being a small fish pursuit by a bigger one, and felt the bloody mouth of the hunter", thus feel the feeling/thoughts of the instances ? Actually, this shouldn't be discussed here, so that, in fact, what I really hope to learn is , more inspirations about SPICE modeling. If you could kindly help more inspirations. Thank you very much. Best regards. ---In LTspice@..., <jmw@...> wrote : Yes, there are many models of black holes, but none, I suppose, that are compatible with LTspice! No existing models are considered satisfactory. More research is, of course, needed. There is a good explanation of the distorting effects of black hole gravity on space-time in 'From Eternity to Here' by Sean Carroll, ISBN9781-85168-795-4. If the Universe is a black hole (as has indeed been suggested), we would almost certainly not be able to prove it, because we are inside it. Your question about 'outside it' is meaningless in terms of what we can know, and may be absolutely meaningless, by which I mean that if there are other black hole Universes, that might observe ours, no-one there could tell what is happening inside our Universe. Opinion is divided on whether other Universes exist, and whether they could have different Laws of Physics, such as you suggest, where time-travel is easy and three-dimensional, but space is one-dimensional and space travel is not easy. Note that physical bodies cannot exist in a Universe with fewer than two space dimensions, and living bodies as we know them require three dimensions. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-23 03:13, ericsson.sunshine@... [LTspice] wrote: toggle quoted message Show quoted text ? Hi, : I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ? Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ? Thank you very much Best regards.
John Woodgate All Messages By This Member #108704 开云体育 Hello, ES. It's not easy to interpret your musings on space-time, but in your first paragraph you actually ask for two different, but related, things. There are many textbooks on semiconductor theory and design, but don't expect them to include the application of the theory to the design of Spice models. You might be lucky to find a book that does that, however. There are also textbooks and papers on the design of Spice models, but they start from a prior understanding of the concepts and relationships of semiconductor theory. I can't give you references to actual publications, but I'm sure there are others here who can. 'CMOS circuit design and simulation' is, I think, about designing ICs, i.e. processes to make CMOS devices, device dimensions required for a given performance, interactions between nearby devices and many other things, This is neither the basic theory that you want or the link from basic theory to model design; it's more a 'workshop manual'. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-26 02:38, ericsson.sunshine@... [LTspice] wrote: toggle quoted message Show quoted text ? Hello, John: Thank you for the replies. Though several days ago, I would like someone could suggest some materials (textbook) about the semiconductors, electron-hole pairs, carriers, etc. Everything needed for a SPCE modeling. I even don't have the concept of where to begin. (Though I have heard "CMOS circuit design layout and simulation", but I am not sure if that's enough. And haven't done reading it yet.) Though same "hole" things in this thread, but size is completely different. I have less things to say about black hole and the space things, I agree what you have said about the 1-dimension or 3-dimension, that's what I am familiar about, too. The idea is just an illusion. As you said , no one could prove it. Especially this/(those) body(ies) none exist in space (has no dimensions/size). No bodies...so that, I just think if the time-space is exchanged, time could be traveled, and space couldn't be traveled, but still in it, how to explain ? does that mean, fully filled the space , feel the all space ? Have (in) it all, but couldn't travel move forward/backward. Just some interesting thoughts, has anyone ever dreamed about "being a small fish pursuit by a bigger one, and felt the bloody mouth of the hunter", thus feel the feeling/thoughts of the instances ? Actually, this shouldn't be discussed here, so that, in fact, what I really hope to learn is , more inspirations about SPICE modeling. If you could kindly help more inspirations. Thank you very much. Best regards. ---In LTspice@..., wrote : Yes, there are many models of black holes, but none, I suppose, that are compatible with LTspice! No existing models are considered satisfactory. More research is, of course, needed. There is a good explanation of the distorting effects of black hole gravity on space-time in 'From Eternity to Here' by Sean Carroll, ISBN9781-85168-795-4. If the Universe is a black hole (as has indeed been suggested), we would almost certainly not be able to prove it, because we are inside it. Your question about 'outside it' is meaningless in terms of what we can know, and may be absolutely meaningless, by which I mean that if there are other black hole Universes, that might observe ours, no-one there could tell what is happening inside our Universe. Opinion is divided on whether other Universes exist, and whether they could have different Laws of Physics, such as you suggest, where time-travel is easy and three-dimensional, but space is one-dimensional and space travel is not easy. Note that physical bodies cannot exist in a Universe with fewer than two space dimensions, and living bodies as we know them require three dimensions. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-23 03:13, ericsson.sunshine@... [LTspice] wrote: ? Hi, : I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ? Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ? Thank you very much Best regards.
[email protected] All Messages By This Member #159895 Hi, boys & girls: ? I have tried this simulation for almost 7 years, but I still can't see the singularity, can you help to fix that ? In the time domain simulation , it didn't show the 'suck everything' effect as the image (someone have successfully seen that.) uploaded in the... ? /g/LTspice/photo/301914/3906592?p=Created%2C%2C%2C20%2C2%2C0%2C0 ? The simulation file I have uploaded in temp,? /g/LTspice/files/Temp/20250417_LB5_high_Q_notch_filter_to_black_hole_planet_crash_preface.zip (I take the risk of IT warning...) ? I can't believe it, 7 years, it took all my fun. ? Wish you all enable to enjoy your life as long as Nexperia possible. ? Best regards.
Tony Casey All Messages By This Member #159897 开云体育 On 17/04/2025 07:48, ericsson.sunshine via groups.io wrote: Hi, boys & girls: ? I have tried this simulation for almost 7 years, but I still can't see the singularity, can you help to fix that ? In the time domain simulation , it didn't show the 'suck everything' effect as the image (someone have successfully seen that.) uploaded in the... ? /g/LTspice/photo/301914/3906592?p=Created%2C%2C%2C20%2C2%2C0%2C0 ? The simulation file I have uploaded in temp,? /g/LTspice/files/Temp/20250417_LB5_high_Q_notch_filter_to_black_hole_planet_crash_preface.zip (I take the risk of IT warning...) ? I can't believe it, 7 years, it took all my fun. ? Wish you all enable to enjoy your life as long as Nexperia possible. To see anything like the "black hole" singularity, you have increase the resolution. You have not specified the maximum time step. You also have to sweep the frequency very slowly because the higher the Q of the notch filter, the longer its settling time is. This is exactly the same phenomenon as with a spectrum analyser requiring slower sweep times as you narrow the resolution bandwidth to avoid spectrum distortion. -- Regards, Tony
Andy I All Messages By This Member #159899 On Thu, Apr 17, 2025 at 06:25 AM, Tony Casey wrote: This is exactly the same phenomenon as with a spectrum analyser requiring slower sweep times as you narrow the resolution bandwidth to avoid spectrum distortion. Also known as (or a variation of) Heisenberg's Uncertainty Principle.? A trade-off between knowledge of time and knowledge of frequency.? Just an FYI. ? Andy ?
Bell, Dave All Messages By This Member #159905 开云体育 Well, at first glance, not knowing quite what you’re looking for, Plot V(Out) on the horizontal axis This: “PULSE(0 1 0 {1606024365150} 1 0 2)” takes 150 YEARS ro sweep the frequency, and you’re only running a 1 SECOND .TRAN\ ? Dave ? toggle quoted message Show quoted text From:* [email protected] <[email protected]> On Behalf Of ericsson.sunshine via groups.io Sent: Wednesday, April 16, 2025 10:48 PM To: [email protected] Subject: EXTERNAL: Re: [LTspice] Have anyone built black hole model already ? ? Hi, boys & girls: ? I have tried this simulation for almost 7 years, but I still can't see the singularity, can you help to fix that ? In the time domain simulation , it didn't show the 'suck everything' effect as the image (someone have successfully seen that.) uploaded in the... ? /g/LTspice/photo/301914/3906592?p=Created%2C%2C%2C20%2C2%2C0%2C0 ? The simulation file I have uploaded in temp,? /g/LTspice/files/Temp/20250417_LB5_high_Q_notch_filter_to_black_hole_planet_crash_preface.zip (I take the risk of IT warning...) ? I can't believe it, 7 years, it took all my fun. ? Wish you all enable to enjoy your life as long as Nexperia possible. ? Best regards.
Andy I All Messages By This Member #159907 Did you forget the symbol potentiometer_standard.asy?? It seems to be missing. ? Andy ? ?
Andy I All Messages By This Member #159908 I don't recall the discussion from 7 years ago. ? But I wonder, is the point of this exercise to demonstrate a "notch filter"?? And then give it a funny false name like "black hole"? ? In electronics and filters, "notch filters" are normally called "notch filters".? I never heard anyone refer to them as "black holes".? But I suppose it is true that a perfect notch filter would suck out all the signal at that one frequency, assuming of course that you stimulated it with only that one frequency and not a signal with a varying frequency or amplitude, since neither of those contains just that one frequency. ? Are you learning how notch filters work?? Is that the point of this exercise?? Or do you have something else in mind? ? Andy ?
[email protected] All Messages By This Member #159910 Ah... ? I see, it's the copy-paste error from another dinosaur's life-time simulation. ? Thank you very much. Correct it now. possibly eye's tired. ? On Thu, Apr 17, 2025 at 10:56 PM, Bell, Dave wrote: toggle quoted message Show quoted text Well, at first glance, not knowing quite what you’re looking for, Plot V(Out) on the horizontal axis This: “PULSE(0 1 0 {1606024365*150} 1 0 2)” takes 150 YEARS ro sweep the frequency, and you’re only running a 1 SECOND .TRAN\ ? Dave ? ?
[email protected] All Messages By This Member #159911 Already uploaded. Can't recognize what's default built-in symbol, what's not. ? /g/LTspice/files/Temp/potentiometer_standard.asy ? Sorry for the. ? On Thu, Apr 17, 2025 at 11:14 PM, Andy I wrote: toggle quoted message Show quoted text Did you forget the symbol potentiometer_standard.asy?? It seems to be missing. ? Andy ? ?
Andy I All Messages By This Member #159913 On Thu, Apr 17, 2025 at 12:53 PM, <ericsson.sunshine@...> wrote: Already uploaded. Now it's missing the model file, "potentiometer_standard.lib". ? What else is missing? ? Should we change PULSE(...) to PULSE(0 1 0 1 1) like in the photo?? Or should we change .TRAN to .TRAN 4730400000 UIC ? ? Andy ?
Andy I All Messages By This Member #159914 ericsson.sunshine, I remain confused about your objective here. ? The note attached to your upload .zip says "Can't see the singularity of .TRAN time domain". ? And yet, the simulation and the photo you uploaded both circled a point in the waveform identified as the "Zero Point of Black Hole take effect". ? Is something mysterious - perhaps something non-physical - supposed to happen when the incoming frequency passes through the notch frequency?? Should the computer's on-screen colors invert or become ultraviolet or something unusual?? Should the simulation freeze at that point?? I don't see a reason why the circuit should not behave in exactly the way that it does.? (Also noting Tony's cautions about timestep and sweep speed.) ? The AC plot points to the notch and labels it "Singularity".? OK.... ? Like I said, everything looks normal to me.? If something is not working the way you expected, making it so that you can't "see the singularity", can you please explain that to me? ? Andy ?
Bell, Dave All Messages By This Member #159915 开云体育 I parameterized the run time as Period, and used that in the .TRAN and Pulse Rise Time Set to Period 10, and it all sorta works. (2x5k in place ot the pot, for a quick fix) ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Andy I via groups.io Sent: Thursday, April 17, 2025 10:59 AM To: [email protected] Subject: EXTERNAL: Re: [LTspice] Have anyone built black hole model already ? ? On Thu, Apr 17, 2025 at 12:53 PM, <ericsson.sunshine@...> wrote: Already uploaded. Now it's missing the model file, "potentiometer_standard.lib". ? What else is missing? ? Should we change PULSE(...) to PULSE(0 1 0 1 1) like in the photo?? Or should we change .TRAN to .TRAN 4730400000 UIC ? ? Andy ?
Andy I All Messages By This Member #159916 The PULSE()'s Period is pretty much irrelevant, because it simulates only in the first rise time.? Would be better to use PWL instead of PULSE, IMHO. ? But what's it supposed to do?? More to the point, what is it?not doing? ? Andy
[email protected] All Messages By This Member #159919 Hi, : ? Thank you all who replied, it's nothing special , just to make some relevant between SPICE & physics, which should be able to describe by math equations. ? The lib file can be found in folders,? /g/LTspice/files/z_yahoo/Files%20sorted%20by%20message%20number/msg%204617/potentiometer_standard.lib ? Change the 'rise' time from long time to 1 second (the shortened sweep time), will solve all problems, no more confusion, simulation pain. ? And I guess 'Heisenberg's Uncertainty Principle' also apply , in the measuring of distance variation due to 'gravitational wave' of black hole. But this relation , don't know how to well describe in SPICE. By random() ??? ? And, I think the frequency sweep should be done well by both, PWL & PULSE, I was used to use PULSE. I have no idea what's supposed in this 'Black hole' simulation, maybe just for fun, I slowly felt nothing can do day by day. ? But , I guess will still try harder to make more simulation. ? Thank you all again. Best regards.

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