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#21
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Should modern physics be taught in high school?
On Nov 23, 9:40*pm, "Dirk Van de moortel"
wrote: "Vilas Tamhane" wrote in message On Nov 20, 9:19 pm, Yousuf Khan wrote: Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. Yousuf Khan http://www.mndaily.com/2012/11/19/ph...ouble-standard They should also keep a cane with the physics teacher; otherwise there will be too many questions. Try it. Assume I am a student. Assume you and me are in relative motion. According to you your clock ticks at normal rate but my clock runs slow. I will hold a similar view. Whose view is correct? So natural question is whose clock is running slow? Or nobody s? According to you I am ageing slowly than you but according to me you are aging slowly. So natural question would be who is really aging slowly? You or me or none? Try it. Assume I am a student. Assume you and me are separated by some distance. According to you your height is normal but I look smaller. I will hold a similar view. Whose view is correct? So natural question is who is smaller? Or nobody s? According to you I am smaller than you but according to me you are smaller. So natural question would be who is really smaller? You or me or none? Don't worry, even Dingle failed to understand that. See at the bottom of *http://users.telenet.be/vdmoortel/di...inglesTrivialF.... You have seen it before. Don't say you haven't, because I know you have. Dirk Vdm Analogy is misplaced and irrelevant. You said, “According to you your height is normal but I look smaller.” Dirk, like an 8th grade student you do not understand simple things. According to me, you LOOK smaller but according to me you are NOT smaller. Understand the difference? |
#22
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Should modern physics be taught in high school?
"Alfonso" wrote in message ...
On 20/11/12 16:55, Martin Brown wrote: On 20/11/2012 16:19, Yousuf Khan wrote: Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in Which makes it a great foundation on which to build further knowledge and it is still relevant to the rest of the population in daily life. People still drive too close and fast like they do not believe in basic Newtonian physics such as momentum and kinetic energy. university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. Not sure that the physics and chemistry graduates are the problem here. Most of the deniers study soft subjects or electrical engineering where relativity must be lamentably taught based on the number of nutters who still write in to Wireless World (it was much worse in the 1970's). I don't know how anyone can "still write to Wireless World" as no magazine of that title has existed since 1984. I do recall the excellent series of articles in that magazine by the distinguished physicist Dr Scott Murray called "A heretics guide to physics" where he demonstrates how physics has slid into the realm of mysticism. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. Yousuf Khan I disagree. Until you have a basic understanding of classical physics introducing relativity and quantum mechanics without the mathematics makes it into another just so story and prone to attack by deniers. The thing that really needs to be communicated is that at relativistic speeds common sense Galilean dynamics no longer works reliably. But the speed of light is only about 1ft per nanosecond. Feet and nanoseconds are both everyday unit in this century. What is missing is any explanation of why dimensions change other than because the maths demand it to make the second postulate true. Beckmann and Mandics pointed out the possibility that Lorentz transforms could simply be equivalence formula, making up for inaccurate electrodynamics by suitable deforming space and time to achieve the correct result. Thus cries of "relativity works" in no way proves that it is correctly based. Essen makes the same point a different way: "Science involves measurement and measurement requires a system of units which need to be carefully chosen such that do not have duplication. Consider now the simplest of all measurements, the measurement of velocity v expressed as the distance d travelled in time t. The result is expressed as v=d/t. It is possible to define units in any two of the quantities in this expression. In practice the units of distance and time are defined and velocity is measured in terms of those units. If the unit of velocity were defined as well then the value v can be expressed in two ways in terms of the unit of velocity and in terms of units of length and time. Conflicting results could be obtained. Only a unit of measurement can be made constant by definition. Making the velocity of light have a constant value c even to observers in relative motion is comparable to making a unit of measurement duplicating the units already defined. The definition of the unit of length or that of time must be abandoned. To meet Einstein's two conditions it is convenient to abandon both. The contraction of length and the dilation of time can now be understood as representing the changes that have to be made to make the results of measurement consistent. There is no question here of a physical theory but simply of a new system of units in which c is constant, and length and time do not have constant units but have units that vary with v^2/c^2. Thus they are no longer independent, and space and time are intermixed by definition and not as a result of some peculiar property of nature.... If the theory of relativity is regarded simply as a new system of units it can be made consistent but it serves no useful purpose" Essen ================================================ Very amusing. Of course the second and third postulates have no foundation in reality. There is no way any fool would establish by definition that tau(rAB/(c-v)) = tau(rAB/(c+v)) and call tau "linear" unless he really was a fool. -- This message is brought to you from the keyboard of Lord Androcles, Zeroth Earl of Medway |
#23
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Should modern physics be taught in high school?
"Dirk Van de moortel" wrote in message ...
"Vilas Tamhane" wrote in message On Nov 20, 9:19 pm, Yousuf Khan wrote: Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. Yousuf Khan http://www.mndaily.com/2012/11/19/ph...ouble-standard They should also keep a cane with the physics teacher; otherwise there will be too many questions. Try it. Assume I am a student. Assume you and me are in relative motion. According to you your clock ticks at normal rate but my clock runs slow. I will hold a similar view. Whose view is correct? So natural question is whose clock is running slow? Or nobody’s? According to you I am ageing slowly than you but according to me you are aging slowly. So natural question would be who is really aging slowly? You or me or none? Try it. Assume I am a student. Assume you and me are separated by some distance. According to you your height is normal but I look smaller. I will hold a similar view. Whose view is correct? So natural question is who is smaller? Or nobody’s? According to you I am smaller than you but according to me you are smaller. So natural question would be who is really smaller? You or me or none? Don't worry, even Dingle failed to understand that. See at the bottom of http://users.telenet.be/vdmoortel/di...ialFumble.html You have seen it before. Don't say you haven't, because I know you have. Dirk Vdm ============================================== Dork thinks "looks smaller" means "really is smaller". That's why he's a dork. He hasn't seen this befo -- So if T = 5 years and v = 0.8c, then the stay at home twin will have aged 10 years (2T) while his travelling twin sister will have aged 6 years (2T/g). no silly grin -- Psychodork Van de improper faggot According to Einstein, tB-tA = rAB/(c-v) = 4/(1-0.8) = 20 years for little sister’s signal to reach Earth from just before turnaround. http://www.fourmilab.ch/etexts/einst...ures/img11.gif Little sister must be a tachyon. Just after turnaround, t’A-tB = rAB/(c+v) = 4/(1+0.8) = 2.22 years, the time it takes for stay-home Dork’s reply to reach little sister. According to the frame jumping faggot, 20+2.22 = 6. ROFLMAO! -- This message is brought to you from the keyboard of Lord Androcles, Zeroth Earl of Medway |
#24
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Should modern physics be taught in high school?
"Vilas Tamhane" wrote in message
On Nov 23, 9:40 pm, "Dirk Van de moortel" wrote: "Vilas Tamhane" wrote in message On Nov 20, 9:19 pm, Yousuf Khan wrote: Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. Yousuf Khan http://www.mndaily.com/2012/11/19/ph...ouble-standard They should also keep a cane with the physics teacher; otherwise there will be too many questions. Try it. Assume I am a student. Assume you and me are in relative motion. According to you your clock ticks at normal rate but my clock runs slow. I will hold a similar view. Whose view is correct? So natural question is whose clock is running slow? Or nobody s? According to you I am ageing slowly than you but according to me you are aging slowly. So natural question would be who is really aging slowly? You or me or none? Try it. Assume I am a student. Assume you and me are separated by some distance. According to you your height is normal but I look smaller. I will hold a similar view. Whose view is correct? So natural question is who is smaller? Or nobody s? According to you I am smaller than you but according to me you are smaller. So natural question would be who is really smaller? You or me or none? Don't worry, even Dingle failed to understand that. See at the bottom of http://users.telenet.be/vdmoortel/di...ialFumble.html You have seen it before. Don't say you haven't, because I know you have. Dirk Vdm Analogy is misplaced and irrelevant. You said, “According to you your height is normal but I look smaller.” Dirk, like an 8th grade student you do not understand simple things. According to me, you LOOK smaller but according to me you are NOT smaller. So, get together and see who is REALLY smaller. Get together, or get at rest w.r.t, each other, and see who has aged REALLY less. Understand the difference? Of course. Understand the analogy? It is appropriate and relevant. But *you* can't wrap your little mind over it. Your problem entirely :-) Dirk Vdm |
#25
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Should modern physics be taught in high school?
On Nov 20, 8:19*am, Yousuf Khan wrote:
Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. * * * * Yousuf Khan http://www.mndaily.com/2012/11/19/ph...ouble-standard The church should be mandated by a presidential executive order, to teach physics, as well as all home schooled and special education schools need to have a strong degree of science and physics. The 99.9% average American doesn't even know that Usenet/newsgroups exist, much less capable of interacting in any positive/constructive way. It's pathetic and only getting worse. Now our phone networks and especially cellular options are way over saturated with internet streaming and interactive video gaming, to the point that ordinary calls (including those of 911) can not get through even when more than adequate signal is available. Basically everything is getting connected to the internet, as well as parallel connected via cellular services that are demanding a great deal of energy and are becoming interdependent upon one another. At some point it's going down, and at best the extra terawatt of energy demand is simply going to run out of juice. With a pathetically outdated and willfully overloaded national energy grid (similar to our nearly dysfunctional telecommunication grids) that doesn't even cover a good portion of our nation, there's a very good chance of a total systemic cascade failure that'll take days to patch and years to upgrade so that recreational and entertainment use of such energy and communications can be sustained and paid for by the lower 99% of us that do not abuse nor waste such resources to begin with. Roughly 25% efficiency is what the average of our energy grid delivers from the source, however the digital grid efficiency isn't .1% efficient once everything is honestly accounted for, with a thousand bits going every which way for each and every digital bit that arrives or leaves our computer, tablet or smartphone. There are considerably better network methods and energy distribution efficiencies that are not being seriously adapted. So, it’s only a matter of time before it all comes to a halt that can’t be easily fixed. Brad Guth,Brad_Guth,Brad.Guth,BradGuth,BG,Guth Usenet/”Guth Venus”,GuthVenus “GuthVenus” 1:1, plus 10x resample/enlargement of the area in question: https://picasaweb.google.com/1027362...18595926178146 |
#26
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Should modern physics be taught in high school?
In article ,
Alfonso wrote: But the speed of light is only about 1ft per nanosecond. Feet and nanoseconds are both everyday unit in this century. What is missing is any explanation of why dimensions change other than because the maths demand it to make the second postulate true. Beckmann and Mandics pointed out the possibility that Lorentz transforms could simply be equivalence formula, making up for inaccurate electrodynamics by suitable deforming space and time to achieve the correct result. Thus cries of "relativity works" in no way proves that it is correctly based. When Richard Feynman was still alive, he was the technical consultant for a NOVA program about time. His presentation of a Fabry-Perot clock clearly showed that light had to travel a longer distance in the moving clock in a second than for a stationary clock. The ONLY mathematics required is the Pythagorean theorem for right triangles. This clock consists of two mirrors facing each other with a pulse of light bouncing between them. The axis of the clock is normal to its direction of motion. Because of this extra distance, the moving clock "ticks" more slowly than a stationary clock. To add to Feynman's presentation, add a moving Fabry-Perot clock with its axis ALONG the direction of motion. For the two moving clocks (perpendicular and parallel to the direction of motion) to tick at the same rate, the spacing between the mirrors of the parallel clock must be reduced. This can only be done if the moving unit of length in the direction of motion to shrink. The physics drives the math--not the other way around. -- Sam Conservatives are against Darwinism but for natural selection. Liberals are for Darwinism but totally against any selection. |
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Should modern physics be taught in high school?
"Salmon Egg" wrote in message
... In article , Alfonso wrote: But the speed of light is only about 1ft per nanosecond. Feet and nanoseconds are both everyday unit in this century. What is missing is any explanation of why dimensions change other than because the maths demand it to make the second postulate true. Beckmann and Mandics pointed out the possibility that Lorentz transforms could simply be equivalence formula, making up for inaccurate electrodynamics by suitable deforming space and time to achieve the correct result. Thus cries of "relativity works" in no way proves that it is correctly based. When Richard Feynman was still alive, he was the technical consultant for a NOVA program about time. His presentation of a Fabry-Perot clock clearly showed that light had to travel a longer distance in the moving clock in a second than for a stationary clock. The ONLY mathematics required is the Pythagorean theorem for right triangles. This clock consists of two mirrors facing each other with a pulse of light bouncing between them. The axis of the clock is normal to its direction of motion. Because of this extra distance, the moving clock "ticks" more slowly than a stationary clock. To add to Feynman's presentation, add a moving Fabry-Perot clock with its axis ALONG the direction of motion. For the two moving clocks (perpendicular and parallel to the direction of motion) to tick at the same rate, the spacing between the mirrors of the parallel clock must be reduced. This can only be done if the moving unit of length in the direction of motion to shrink. The physics drives the math--not the other way around. ================================================== ======= When I went to school, the speed on the hypotenuse of a right triangle was sqrt(c^2 +v^2), not sqrt(c^2+v^2) = c. Increase the speed v until it equals c and we then have sqrt(c^2+c^2) = sqrt(2c^2) = 1.414 c, and that isn't c either. The math for your (or Feynman's if indeed it was he that made it) impossible claim does not exist. Moreover, the Michelson-Morley experiment clearly shows no change in time. Why did Einstein say the speed of light from A to B is c-v, the speed of light from B to A is c+v, the "time" each way is the same? We'll add to that: Why was Feynman stupid enough to believe it? -- This message is brought to you from the keyboard of Lord Androcles, Zeroth Earl of Medway |
#28
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Should modern physics be taught in high school?
On Nov 23, 10:41*am, Vilas Tamhane wrote:
On Nov 20, 9:19*pm, Yousuf Khan wrote: Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. * * * * Yousuf Khan http://www.mndaily.com/2012/11/19/ph...ouble-standard They should also keep a cane with the physics teacher; otherwise there will be too many questions. Speaking of cane and now Grasshopper... http://www.nytimes.com/2012/11/22/wo...pagewanted=all same as http://tinyurl.com/bwckgx2 which really implies USA can complain about China schools without holding a mirror to its own. Try it. Assume I am a student. Assume you and me are in relative motion. According to you your clock ticks at normal rate but my clock runs slow. I will hold a similar view. Whose view is correct? So natural question is whose clock is running slow? Or nobody’s? According to you I am ageing slowly than you but according to me you are aging slowly. One is always not in motion in one's own reference frame. Sure feels and measures like it. No matter how fast I bike, car, train, or fly... for the most part my speed is always zero in my reference frame. So natural question would be who is really aging slowly? You or me or none? In a mole of gas there are 6.0221415e+23 molecules all traveling at different directions and speeds. What's the time for their collective Now? Is the question meaningless? Unlike photons, molecules are subject to the laws of speeds. Just asking questions here... what's my point? Well, I have Avogadro's Number of points, not just one. Enjo(y)... -- Mahipal http://mahipal7638.wordpress.com/meforce/ |
#29
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Should modern physics be taught in high school?
On Nov 24, 4:59*am, Salmon Egg wrote:
In article , *Alfonso wrote: But the speed of light is only about 1ft per nanosecond. Feet and nanoseconds are both everyday unit in this century. What is missing is any explanation of why dimensions change other than because the maths demand it to make the second postulate true. Beckmann and Mandics pointed out the possibility that Lorentz transforms could simply be equivalence formula, making up for inaccurate electrodynamics by suitable deforming space and time to achieve the correct result. Thus cries of "relativity works" in no way proves that it is correctly based. When Richard Feynman was still alive, he was the technical consultant for a NOVA program about time. His presentation of a Fabry-Perot clock clearly showed that light had to travel a longer distance in the moving clock in a second than for a stationary clock. The ONLY mathematics required is the Pythagorean theorem for right triangles. This clock consists of two mirrors facing each other with a pulse of light bouncing between them. The axis of the clock is normal to its direction of motion. Because of this extra distance, the moving clock "ticks" more slowly than a stationary clock. To add to Feynman's presentation, add a moving Fabry-Perot clock with its axis ALONG the direction of motion. For the two moving clocks (perpendicular and parallel to the direction of motion) to tick at the same rate, the spacing between the mirrors of the parallel clock must be reduced. This can only be done if the moving unit of length in the direction of motion to shrink. The physics drives the math--not the other way around. -- Sam Conservatives are against Darwinism but for natural selection. Liberals are for Darwinism but totally against any selection. So this is the direct experiment to prove length contraction! So why they say there is no direct experiment to prove length contraction? Can you furnish more details? |
#30
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Should modern physics be taught in high school?
On Nov 24, 6:47*am, Mahipal wrote:
On Nov 23, 10:41*am, Vilas Tamhane wrote: On Nov 20, 9:19*pm, Yousuf Khan wrote: Most of what is taught in high school physics today is stuff discovered from 400 years ago, as discovered by Isaac Newton. I understand the need to keep things simple for HS students to digest, and most of the physics from 400 years ago is still basically the only stuff that we deal with in everyday life. However, when modern physics is introduced in university, a lot of students are surprised by how different physics is at these extreme levels. Many are unable to grasp it and end up becoming deniers about Quantum Mechanics, and especially Relativity. With modern computer graphics equipment, it should be easier than ever to visualize modern physics without going into explicit details about its complex equations. Maybe it's about time that modern physics is introduced into high schools, at a basic level, mainly to get them used to the far out ideas that are beyond our everyday experiences, and prevent more from becoming deniers? Relativity could be introduced into the end of physics (mechanics) courses, while Quantum Mechanics could be introduced into the end of chemistry courses? It shouldn't be a full curriculum on these subjects, with experiments, etc., just a documentary just to introduce them to the ideas that are modern physics. * * * * Yousuf Khan http://www.mndaily.com/2012/11/19/ph...ouble-standard They should also keep a cane with the physics teacher; otherwise there will be too many questions. Speaking of cane and now Grasshopper... http://www.nytimes.com/2012/11/22/wo...chools-a-cultu... same ashttp://tinyurl.com/bwckgx2which really implies USA can complain about China schools without holding a mirror to its own. Try it. Assume I am a student. Assume you and me are in relative motion. According to you your clock ticks at normal rate but my clock runs slow. I will hold a similar view. Whose view is correct? So natural question is whose clock is running slow? Or nobody’s? According to you I am ageing slowly than you but according to me you are aging slowly. One is always not in motion in one's own reference frame. Sure feels and measures like it. No matter how fast I bike, car, train, or fly... for the most part my speed is always zero in my reference frame. So natural question would be who is really aging slowly? You or me or none? In a mole of gas there are 6.0221415e+23 molecules all traveling at different directions and speeds. What's the time for their collective Now? Is the question meaningless? Unlike photons, molecules are subject to the laws of speeds. Just asking questions here... what's my point? Well, I have Avogadro's Number of points, not just one. Enjo(y)... -- Mahipalhttp://mahipal7638.wordpress.com/meforce/ Proper time does not change in SR. But that is not the relief. What we now have are two measurements for a single clock. Improper and proper one. Since proper ticking of clock remains unchanged it should be clear that improper measurements carry no meaning. They are clearly apparent and wrong. I don’t know about gas but there is no reason why SR is not applicable. I have forgotten chemistry. After referring a book I have a rough figure for the velocity of gas molecules. It is too low, about 483 m/sec. at 300 K. So mass of gas molecules will increase by a factor of 13^-13. What is the weight of the gas? It is negligible and so relativistic effect is not measurable. |
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