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Questions related from Ismail Abbas
We assume that the difference is huge and that it is not possible to compare the two spaces. The R^4 mathematical space considers time as an external controller and the space itself is immobile in...
11 August 2024 6,539 14 View
We assume this to be true. We also assume that the vacuum bomb is the latest version of explosives with an explosive power of a few to ten kg of TNT equivalent. It has the unique characteristic of...
05 August 2024 4,476 1 View
We assume this to be true. Science leaves the era of mathematics and enters the era of matrix mechanics and the turning point is the discovery of numerical statistical theory called Cairo...
01 August 2024 3,834 2 View
We assume that we can find a statistical matrix mechanics equivalent to Schrödinger's PDE in two consecutive steps: i-Transform the Schrödinger PDE describing the wave function Ψ into its square...
28 July 2024 3,902 4 View
We assume that there is a physico-statistical meaning to the constant π other than circular geometry, but the iron guardians of the Schrödinger equation deny this. The iron guardians of the...
23 July 2024 4,236 9 View
We assume that it is possible to calculate finite numerical integration via statistical matrix mechanics (a product of the statistical method of Cairo techniques). It is obvious that here it is...
22 July 2024 6,761 5 View
We assume that the energy in infinite free space (in addition to flammable particles if any) is drawn toward the center of the hottest point, as if to add more fuel to the fire. The Big Bang...
21 July 2024 465 1 View
We assume that the cat in a box paradox may allow an additional approach to include multiple cats in the same box. We can now see two seemingly different views, quantum and classical. The...
14 July 2024 8,191 4 View
We assume that this is true when the statistical matrix mechanics of the so-called Cairo techniques are used to replace PDE and its classical mathematical methods of solution. Moreover, the...
12 July 2024 3,210 2 View
We assume that the Schrödinger wave equation, iℏ(dψ/dt)= Ĥψ. . . . . (1) is incomplete and cannot be considered a unified field theory. on the other hand, its square, d/dt)partial U= D Nabla^2...
07 July 2024 7,060 8 View
We assume that vacuum cleaners can explode spontaneously. Very few catastrophic accidents due to vacuum cleaner explosions have occurred in the world recently. We also assume that the mechanism or...
04 July 2024 4,796 2 View
Whether a vacuum can spontaneously explode is a serious question that essentially falls under quantum mechanics. If the vacuum can explode spontaneously, this would mean that the dynamics of the...
28 June 2024 1,997 2 View
Doing a Google search brings up the statement (Schrödinger's equation and the duality diffusion equations are equivalent. In turn, Schrödinger's 1931 conjecture is solved.). The above statement is...
26 June 2024 9,752 4 View
Before the Big Bang, there was space and time that constituted unitary four dimensional vacuum. This problem belongs to quantum mechanics and can be solved by quantum matrix sequences from the...
15 June 2024 2,556 11 View
The short answer is yes. The Schrödinger equation is over 100 years old and, what's more, it was born incomplete. In 2020, a new numerical statistical theory called Cairo Techniques emerged that...
05 June 2024 9,985 2 View
It's both.
31 May 2024 7,012 2 View
We assume that V(x,y,z,t) is the external potential applied to the quantum particle enclosed in a closed system. What is quite surprising is that there exists another spontaneous component for V...
29 May 2024 198 4 View
The short answer is yes, it is absolutely true. We first affirm that the matrix mechanics of W. Heisenberg, Max Born and P. Gordon (H-B-G) was born dead and destroyed by the Schrödinger equation...
27 May 2024 6,163 4 View
The short answer is yes. Scientific education in the West throughout the 20th century was based on the assumption that Schrödinger's PDE is the only unified theory of energy fields (microscopic...
24 May 2024 9,507 4 View
Schrödinger's PDE is too old (+100 years) and fundamentally incomplete but it has proven itself in almost all scientific fields. He can't die or be fired all at once, at least in the next ten...
19 May 2024 3,182 7 View
Contrary to the opinion of the iron guards of SE who believe that this is the only unified field theory, the truth is that modern statistical mechanics of Cairo techniques and its B matrix chain...
16 May 2024 7,537 22 View
It’s true that they were published everywhere as clear as the sun. But who are the old iron guards and why do they defend the Schrödinger equation like its slaves? The old iron guards are defined...
13 May 2024 6,698 5 View
We assume the answer is yes, they are fundamentally incomplete. The two equations [1] were initially introduced to live and function in a 3D geometric space while nature lives and functions in a...
11 May 2024 1,165 4 View
The question seems to be whether mathematics is necessary or not, but the question mark is that if mathematics is essential for physics, chemistry and almost all other subjects, then they should...
09 May 2024 9,749 3 View
We assume that the answer to the question of whether the quantum wave function Ψ is a scalar, a vector or not is that it is none of these. Ψ is an abstract mathematical operator that has no...
04 May 2024 5,780 3 View
This question is still relevant since the discovery and description of photons more than 100 years ago. If we follow QM theory, the answer is definitely no because the photon must have a positive...
02 May 2024 4,399 1 View
I know I'm crossing a minefield in investigating this question. There are at least two incompatible theories: classical EM theory, where wave energy is continuous and QM quantum theory, where...
27 April 2024 4,908 1 View
We assume the answer is yes. Furthermore, this is to be expected to occur in the heat diffusion equation and Schrödinger's PDE from a physical and mathematical point of view. The question arises:...
26 April 2024 3,853 4 View
It is true that E=Ex+Ey+Ez is valid for both classical physics and quantum mechanics. What is surprising is that this formula is the least understood and the least justified.
25 April 2024 9,934 4 View
The mathematical derivation of the two-dimensional trapezoidal rule formula sounds like academic hum and numerical calculations using this formula deceive or mislead you. So what?
22 April 2024 9,784 2 View
We suppose, i- the starting point is to replace the complex PDE for the complex wave function Ψ (probability amplitude) by a real PDE for Ψ^2. The PDE for Ψ^2 which is the probability density of...
20 April 2024 5,281 2 View
The importance of finding a powerful numerical solution for the Laplacian matrix A in the Laplace and Poisson partial differential equations is obvious. The classical conventional numerical...
14 April 2024 346 4 View
The short answer is yes. We assume that the original Schrödinger PDE was introduced for an isolated and bounded quantum system (microscopic or macroscopic) in infinite free space (-∞
29 March 2024 9,719 1 View
Wikipedia mathematics suggests that the volume of a four-dimensional hypercube (tesseract) of side length "a" is 8 a^4. On the other hand, the B matrix chains predict the volume of a...
28 March 2024 6,122 1 View
We think the short answer is most likely yes, he did.
24 March 2024 5,181 1 View
Are Lorentz transformations a paradox? The modern proof of Lorentz transformations makes you laugh and the modern proof of mass energy equivalence E=mc^2 keeps you laughing. So what ?
22 March 2024 3,008 8 View
Many physicists and mathematicians assume that mother nature has two distinct languages, one for macroscopic objects in classical physics and the second for microscopic subatomic objects which is...
13 March 2024 4,502 3 View
We assume this form is inappropriate and misleading in many situations. Numerical statistical mechanics that works efficiently to solve the heat diffusion equation as well as Schrödinger's PDE...
02 March 2024 2,051 4 View
Is it true that Schrödinger's equation can be derived from the heat diffusion equation? We assume this is absolutely true. Simply replace the dependent variable thermal energy U or T Kelvin with...
01 March 2024 1,180 3 View
We assume that B-matrix chains which are a product of the numerical statistical theory called Cairo technique are capable of efficiently solving the SE PDE in 1D, 2D, 3D via two natural laws or...
18 February 2024 7,745 2 View
Why Indians are so distinguished in physicists and mathematicians? The answer to this question has many similarities with a previous article: Why do Russians excel so much in mathematics and...
16 February 2024 9,247 1 View
Do Schrödinger's equations include the principle of least action? Any time-dependent physical process must conform to the principle of least action which is a universal law. We assume that the...
13 February 2024 7,493 11 View
The mechanical product of the B matrix of the Cairo techniques predicts that if the solution of the heat diffusion equation is forced by the boundary conditions and physical properties of the...
09 February 2024 1,363 6 View
We assume that this is absolutely true because they tried to introduce and adjust matrix mechanics only to quantum particles when it should be applied to both classical physics situations as well...
18 January 2024 7,560 4 View
the accepted definition of a quantum particle is subject to Schrödinger dynamics as opposed to Newtonian dynamics. But we can find many interpretations of the quantum particle concept which we...
10 January 2024 8,679 6 View
Some Iron Guard mathematicians and physicists have argued for nearly a century that it is an idol that should never be touched. On the other hand, for each in-depth question in quantum mechanics...
05 January 2024 2,114 4 View
In 1925, W. Heisenberg, Max Born and Pascual Jordan introduced so-called matrix mechanics. We assume there is a lot of math and little physics aside from the poorly explained factor of...
30 December 2023 2,472 4 View
Causality means that an effect cannot occur from a cause that is not within the back (past) light cone of that event. We assume that quantum mechanics respects causality. However, some physicists...
25 December 2023 6,158 3 View
Is it true that Schrödinger's equation is only valid for infinite free space? The untold story of SE, as I understand it, is that the wave function ψ can only live in a vacuum and infinite...
23 December 2023 1,957 4 View
23 December 2023 4,019 7 View
We think the short answer is NO. By definition, scientific discipline is the practice of training people to obey rules or a code of behavior, using punishment to correct disobedience. To be...
21 December 2023 2,726 5 View
It is true that thermal energy plays no role in the Schrödinger equation which is literally an equation of the total energy of a particle. Additionally, there is no generally accepted quantum...
15 December 2023 1,239 3 View
We assume that the accepted definition of a quantum particle is one subject to Schrödinger dynamics as opposed to Newtonian dynamics. This implies some limitation on the size or volume of the...
13 December 2023 8,643 12 View
We assume that the B-matrix chains, or any other exact statistical string, can introduce a numerical statistical solution for the total quantum energy of a particle in a 3D box. This may be...
11 December 2023 185 5 View
We assume that physics, consisting of three main branches, classical physics, quantum physics and general relativity, is probably too big for the human brain. However, some physicists and...
09 December 2023 4,999 4 View
This is most likely a paradox[1]. We assume that the fundamental reason is that they both treat the boundary conditions BC, the source term S and the thermal conductivity/diffusion k and D as...
05 December 2023 4,186 2 View
I- If the total energy is a scalar then it has no x,y,z components. II-If the total energy is a vector then it must have a Phythagorean addition formula for its components x,y,z. III- To our...
02 December 2023 5,786 12 View
We assume that the chains of matrix B can introduce a numerical statistical solution for ψ(r)^2 (total quantum energy) in the same way that they present a numerical statistical solution for the...
26 November 2023 4,297 3 View
We assume that this is true nowadays, because two mathematicians from two different mathematical fields can hardly find a common language to communicate. The question arises: is it possible to...
24 November 2023 2,263 6 View
We assume that the Nabla^2 expression in 3D geometry is quite old and its lifespan is almost expired. B-matrix chains suggest adding a fourth dimension (mainly time t) woven into the 3D geometric...
21 November 2023 6,907 2 View
The strings in matrix B predict this statement. As a numerical example, the sum of the entire series 0.99 + 0.99^2 + 0.99^3 + . . . . +0.99^N increases to 190 as N goes to infinity. Additionally,...
19 November 2023 7,456 8 View
If the eigenvalue of matrix A is λ1 and the eigenvalue of matrix B is λ2, the statistical chain of transition matrix B predicts that the eigenvalue of the sum A+B would be given by λ1 +...
06 November 2023 4,090 9 View
To be objective and brief, let us refer to my personal experience in the Q/A section of Researchgate: On October 7, 2023, a response came from an unemployed immigrant in Porto as follows: your...
02 November 2023 2,268 2 View
We assume that if the statement is true, then it must be a mixture of KE and PE, but in the right proportions.
28 October 2023 9,071 10 View
By classical quantum mechanics we mean original QM of N. Bohr Hydrogen atom before Schrodinger equation and Bohr/Copenhagen superposition interpretation. We assume that classical quantum mechanics...
19 October 2023 8,220 7 View
In the solution of time-dependent schrodinger partial differential equation it is assumed that The minimum energy of quantum particle is hf/2 but not zero. The question arises is there any...
15 October 2023 6,540 7 View
The Middetranian Sea countries include Egypt (4 million immigrants from North and Central Africa) and Spain (1 million immigrants from Morocco and 1/4 million immigrants from Algeria). These two...
09 October 2023 2,954 0 View
We assume this to be true in a manner similar to the statistical modeling approach called Cairo techniques. Here, real time t exists in intervals quantized as a dimensionless integer 1,2 3 , . ....
06 October 2023 6,719 5 View
We cannot imagine the existence of classical and modern physics without Newton's second law in its general form. Newton's second law is a hypothesis of universal law that does not need...
05 October 2023 4,078 13 View
This is the very definition of elastic collision. By definition, elastic collision means the collision in which there are no dissipations due to heat, plastic deformation, sound waves, etc. So, by...
05 October 2023 1,457 2 View
We assume that it is true that real time t exists in intervals quantized as a dimensionless integer 1,2 3 , ...N and that it can be successfully used to solve the general case of 3D PDE dependent...
29 September 2023 6,205 4 View
We assume that the most important similarity is that both describe how the energy density function U(x,t) moves in 4D x-t space. On the other hand, the most important difference is that in the...
28 September 2023 4,090 2 View
Modern quantum mechanics is based on the Shrödinger equation (SE) with the Bohr-Copenhagen interpretation. As far as I understand, SE creates its own independent world outside of classical...
25 September 2023 1,190 7 View
We assume that the derivation of Planck's radiation law in QM can be carried out without the need for Planck's postulate of quantization of the quantum oscillator energy (E(ph)=n.h.f, where n=1.2,...
21 September 2023 5,680 2 View
Yes of course.
18 September 2023 7,029 9 View
The 1926 Schrödinger equation was originally intended to resolve the subatomic quantum particle in an infinite potential field without a word about superposition. Furthermore, E. Schrödinger...
14 September 2023 3,327 5 View
Einstein's original proof for SR special relativity is based on 5 irreducible hypotheses, one of which is Newton's second law of motion in its general form, F=d/dt)partial [mv]. However, in a...
12 September 2023 7,073 3 View
Mother nature has only one face to show, still sought after as a unified physical theory. Classical diffusion theory describes the diffusion of energy density while quantum mechanical theory...
01 September 2023 1,123 8 View
We assume that the statistical matrix definition of the quantum wave function Ψ differentiates the allowed wave functions from the forbidden wave functions. Moreover, the allowed wave functions...
26 August 2023 7,967 6 View
It is very likely that it is none of this? The question arises, does the answer to the question belong to "Shut up and calculate"?
21 August 2023 1,677 4 View
We assume the answer is no because a minus sign appears to the left: -h^2/2m (d^2Ψ(x,t)/dx^2]partial)+V(x,t)Ψ(x,t)=ihdΨ(x,t)/dt]partial And, -h^2/2m...
19 August 2023 4,187 5 View
It worth mention that the delta function has a special meaning in quantum mechanics. However, we assume that if the square of the delta function is well defined, the square root of the delta...
17 August 2023 5,244 3 View
Schrödinger's equation is about energy. We assume that there are two types of solutions depending on the geometry of the boundary conditions and the time dependence of the potential field applied...
16 August 2023 2,102 2 View
Two waves Y1 and Y2 are said to be coherent if their phase shift Phi 1 -Phi 2 is constant over time. The question arises, can quantum entanglement be assumed to be a kind of forced wave coherence...
13 August 2023 2,417 2 View
We assume the answer is yes. But the interconnected question arises: how?
06 August 2023 4,669 10 View
N. Bohr once said that anyone who claims to understand SE, including himself, has either misunderstood or is simply a liar. Therefore, it is expected that Q statistical quantum transition matrix...
04 August 2023 446 2 View
Since the time of N.Bohr, E.Schrdinger, W.Heisenberg and all the great scientists, physicists and mathematicians have called Schrödinger's equation the quantum wave equation. If we agree on a...
28 July 2023 1,144 8 View
Many people may think that an irrational such as 2^1/2 is mathematical, not physical, and has no direct connection to quantum mechanics (QM). On the other hand, we guess that's a great question...
23 July 2023 4,706 6 View
The transition matrix B suggests different times inside different closed volumes. More precisely, time passes more slowly inside larger volumes in proportion to V/A=Lc (V=Volume, A=inner surface...
21 July 2023 9,051 0 View
Believe it or not, transition matrix theory B suggests a reformulation of the Bohr/Copenhagen interpretation of the Schrödinger equation (SE). We are now going into a minefield because most...
15 July 2023 1,631 9 View
Yes, It may be a consequence of the statistical regularity condition in the B-matrix chains which predicts a diffusion coefficient α(3D)=9/4 * α(2D) ref: Researchgate, theory and design of audio...
12 July 2023 2,282 3 View
We assume that nature is probabilistic in the sense that it is linear, binary and symmetric (Schrödinger's exact equation is misunderstood as linear but not binary or symmetric) The numerical...
05 July 2023 9,872 0 View
We assume both are correct. div D = ρ applies to emw propagation in infinite boundless space. And Div D = ρ + α dV/dt applies to emw scattering under Diriclet boundary conditions on the voltage V...
03 July 2023 4,939 3 View
Briefly, we propose a time-dependent Poisson PDE expressed by: dU/dt)partial=D Nabla^2 U +S And, Laplace's time-dependent PDE is proposed as follows: dU/dt)partial=D Nabla^2 U (In normal...
17 June 2023 6,233 5 View
Nature is linear, binary and symmetrical. We assume that any statistical transition matrix M that satisfies the above conditions would generate the solution of PPDE with Dirichlet boundary...
16 June 2023 1,278 6 View
As far as I know, time-dependent heat conduction/diffusion in the solid sphere has never been solved mathematically, neither analytically nor numerically. My personal view is that the solution...
12 June 2023 5,244 6 View
Yes. We guess that may mean not asking questions because we don't have answers !
09 June 2023 2,743 13 View
Is it logical to assume that the probability created by nature produces symmetry? And if this is true, is anti-symmetry just a mathematical tool that can be misleading in specific situations?
08 June 2023 2,684 7 View
Many people think that the thermal conductivity K is a scalar and therefore the thermal diffusivity α=K/ρ S (in normal convention) is also a scalar which is not true. It is surprising that K is...
07 June 2023 6,669 8 View
In fact the surprising geometric rule: two 3D bodies of different shapes cannot have the same volume to area ratio unless both have exactly the same volume and same area, is a physical rule...
06 June 2023 7,303 2 View
Einstein once said that 3D solid geometry was nothing but physics. We assume that the following unconventional formulas are products of the statistical transition matrix chains B: i- Two 3D...
04 June 2023 4,224 1 View
We assume that N. Bohr knew brilliantly that his previous description of the spectrum of the hydrogen atom via a single principal energy quantum number was insufficient to describe the fine...
02 June 2023 6,878 4 View
Yes, it is entirely possible and reveals the beauty and precision of quantum mechanics when statistically understood. We recall how the time-dependent heat equation is solved in its most general...
31 May 2023 390 1 View
We assume that the conservation of probability does not exist in quantum mechanics as in the case of classical mechanics. According to Shrodinger's equation, there is a continuous generation of...
29 May 2023 319 5 View
We assume the answer is yes, it is. two 3D bodies of different shapes cannot have the same volume-to-area ratio unless both have exactly the same volume and area. This rule applies to all 3D...
24 May 2023 7,328 7 View
An original Markov process is described by a square matrix M (nxn) whose entries M i, j verify the following two conditions: i- All inputs M i,j are real and belong to the closed interval...
22 May 2023 9,148 1 View
We assume that the statistical weight SW for free nodes in a geometric shape is of extreme importance in mathematics and theoretical physics but is still absent. However, SW, which is a...
19 May 2023 325 7 View
First, Islam teaches that Sharia comes from God. Since God is universal, immortal, and perfect, the Sharia shares the same attributes. Thus, in accordance with the universality of God, the Islamic...
12 May 2023 7,565 2 View
Einstein, Podolsky and Rosen introduced the concept of subatomic particle entanglement in 1935. It was also A. Einstein who introduced the quantization of photon energy via his famous...
09 May 2023 9,445 2 View
Mathematics and theoretical physics are currently searching for answers to this particular question and two other related questions that make up three of the most persistent questions: i- Do...
07 May 2023 7,827 4 View
Many people believe that x-t spacetime is separable and that describing x-t as an inseparable unit block is only essential when the speed of the object concerned approaches that of light. This is...
29 April 2023 4,918 3 View
We assume that there is a complex story deeply hidden behind double and triple integration. This is the reason why the current definition of double and triple integration is...
26 April 2023 3,544 4 View
We assume the answer is yes. The numerical statistical solution of Laplace's partial differential in the heat conduction equation in its general form (1-3D geometry, with arbitrary Dirichlet...
08 April 2023 6,992 2 View
The decisive answer is left to the experts in quantum mechanics, not me. But what's really annoying is that for every fundamental quantity, even the Psi wave function itself, you get 3 or more...
01 April 2023 1,329 6 View
We assume that this statement is false, but one of the most common mathematical errors. So a question arises: what is the importance of the LHS diagonal?
29 March 2023 4,019 3 View
The decisive answer is left to the experts in quantum mechanics, not me. However, another question arises, could this command be rephrased as "Calculate but don't shut up"?
26 March 2023 5,218 6 View
The Markov stochastic transition matrix (Mi,j) is by definition a mathematical probability matrix that works in some limited mathematical domains. The question arises as to why it cannot solve...
24 March 2023 7,543 3 View
We assume that the answer is yes, but how? Most people think that bacteria use the pili (sometimes called flagella or pseudolegs) to walk (in vertical orientation) or crawl (in horizontal...
20 March 2023 2,322 2 View
I think they make it normal and you can't spot a mathematician or a physicist out of a certain social group until they tell you who they are. But to be precise enough, they are completely...
13 March 2023 3,604 4 View
In the Egyptian language, the term "God willing" has a different concept than in the West. This means that it will never happen in the life of our planet. If I am lucky enough to understand the...
08 March 2023 1,285 6 View
What is missing is an exact definition of probability that would contain time as a dimensionless quantity woven into a 3D geometric physical space. It should be mentioned that the current...
05 March 2023 3,042 14 View
The Gamma function, G(n)= Integral from 0 to infinity [Exp(e^-x^n)]dx is of the great mathematical and physical importance. It can be calculated without numerical integration (for practical...
28 February 2023 3,681 6 View
We assume that the derivation of Planck's radiation law in QM can be performed without the need for Planck's postulate of quantum oscillator energy quantization (E(ph)=n.h.f?) by appropriate...
19 February 2023 2,218 2 View
Quantum entanglement (scary action at a distance) as I can understand it does not violate Special Theory of Relativity. There are a few approaches to prove this, one of which is to combine quantum...
09 February 2023 3,801 4 View
We assume that the Bohr/Copenhagen interpretation of quantum mechanics and entanglement phenomena is true except that A. Einstein was remarkable and has the right vision. The entanglement or...
07 February 2023 2,897 3 View
We assume that in general probability and statistics belong to physics rather than mathematics. The Normal/Gaussian Distribution: f(x)={Exp(-x^2/2 sigm^2)}/sigma.Sqrt(2.Pie) can be derived from...
20 January 2023 2,065 4 View
There's a long debate here, but we assume the most likely answer is yes.
03 January 2023 8,389 0 View
Classical physics has always distinguished particles from waves. However, at the beginning of the 20th century, the newly discovered phenomena of atomic and subatomic particles as well as the...
23 December 2022 9,375 6 View
The numerical solution of time-dependent PDEs is generally based on the FDM technique followed by the method of separating the variables x and t. Therefore, depending on the geometry of the...
11 December 2022 3,041 0 View
There is a rigid agreement between SR and the transition matrix B applied to study the energy density scattering field in 4D x-t space. An adequate algorithm [1,2,3] shows that the answer is yes...
01 December 2022 2,146 13 View
In energy conservation situations where the transient probability is additive, irrational numbers such as 2^1/2 have no place. However, especially in QM as I understood it, the probability...
28 November 2022 4,791 2 View
The Laplace PDE is defined dU/dt)partial=Nabla^2 U solution has two main approaches, i- FDM approach which transforms the Nabla^2 PDE U=b into a set of n linear algebraic equations Au=u to be...
24 November 2022 8,155 4 View
We assume this to be true and this may be the reason why the rule, [Two 3D bodies of different shapes cannot have the same volume to area ratio unless both have the same volume and area?] applies...
16 November 2022 4,981 14 View
We assume that they perform only two degrees of freedom, as shown by experimental evidence.
07 November 2022 6,522 1 View
The realistic definition of transition probability in physics is well defined and constrains the probability to rational numbers. The abstract definition of probability in mathematics is also well...
31 October 2022 3,814 1 View
I suppose so, it's true that physics is the special case of mathematics. In physics, the existence and the uniqueness of the solution are ensured whereas in mathematics, it is the general case of...
28 October 2022 116 8 View
We assume that the most likely answer is unfortunately yes.
29 August 2022 7,022 3 View
Why not ? We suspect the answer might be useful for calculating reverberation time in addition to sound intensity field in audio rooms of different geometries.
13 August 2022 4,820 2 View
We assume that the answer is yes and that it would be of great importance in the theory of heat conduction and in experimental measurements of the thermal properties of different materials.
08 June 2022 8,910 3 View
looking for a direct method other than D=K/Rho S.
06 June 2022 5,904 1 View
If both work on the same principle of operation: chain reaction of the interactive fission U 235. The bombardment of Uranium-235 by fast neutrons produces a chain reaction fission accompanied ...
02 June 2022 5,531 3 View
