On the Fundamental Constants of Nature

Total Page:16

File Type:pdf, Size:1020Kb

On the Fundamental Constants of Nature Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 3 June 2020 doi:10.20944/preprints202006.0017.v1 On the Fundamental Constants of Nature David Humpherys [email protected] https://orcid.org/0000-0001-7375-7897 Abstract Planck units of length, mass, and time are fundamental constants of nature. Tra- ditional constants including Planck’s constant, the gravitational constant, the elementary charge, and many others are comprised of these three fundamental units. Physics equations are functions in which maximum potentials defined by the Planck units are reduced by one or more proportionality operators, producing observed quantities of natural phenomena. Natural symmetries constrain the relationships between length, mass, and time, yielding the physical dynamics of momentum, action, force, and energy. The Planck units quantify mechanical, gravitational, and electromagnetic properties of the universe and offer a com- mon language for interpreting the standard model interactions. Units associated with the electromagnetic interaction are translated into units of length, mass, and time, including the coulomb, ampere, volt, tesla, henry, weber, farad, ohm, and siemen. Keywords Planck units · natural units · fundamental constants · physical constants · Planck’s constant · gravitational constant · particle mechanics 1 Introduction At the close of the 19th century, Max Planck unveiled the constant of proportionality that bears his name today [1–3]. Planck’s discovery ushered in a new era of quantum physics and ~ became ubiquitous in equations describing the physical universe on small scales. At the same time, Planck showed that combining ~, G, and c in the right proportions creates natural quantities of length, mass, and time. More than a century later, the system of derived Planck units—featuring enigmatic ratios of the same three constants—has expanded deeper into the fields of quantum mechanics, thermodynamics, electromagnetism, and gravity [4–9]. Despite sharing the same building blocks, these formulas offer little insight into the physical meaning of ~ and G, or the Planck units they define. A deeper examination of the physical constants and the entire system of Planck units reveals a beautifully simple structure that warrants re-evaluation of what is fundamental. The opportunity eluding Planck at the time, and many others since, is recognizing that the © 2020 by the author(s). Distributed under a Creative Commons CC BY license. Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 3 June 2020 doi:10.20944/preprints202006.0017.v1 2 fundamental ingredients of the universe are measured in units of length, mass, and time— not in quantities of Planck’s constant or the Gravitational constant. From the relationships between these three fundamental units emerge the symmetries on which modern day phys- ical theories are built. The fundamental Planck units not only explain the entire system of Planck units more simply and elegantly; they redefine the most important physical constants and equations in ways that expand our understanding of the natural universe. Planck’s constant and the gravitational constant can be stated in Planck units as ~ = lPmPc (1) l G = P c2: (2) mP Similarities between the two constants are immediately apparent in these simple forms, most notably in the relationship between length and mass. The product form of the rela- tionship found in Planck’s constant is ideal for determining the extensive properties of ele- mentary particles, whereas the quotient form of the gravitational constant is better suited for calculating the intensive properties of large gravitational bodies. Equations 1 and 2 can be derived from the equations of Planck length and Planck mass, shown in appendix A. The composition of Planck’s constant and the gravitational constant are demonstrated in table 1 using CODATA values. Table 1: Planck’s constant and the gravitational constant are comprised of fundamental units of length, mass, and time. Constant Unit Value −35 ~ = lP 1:616255 × 10 m −8 × mP 2:176434 × 10 kg × c 299; 792; 458 m=s = 1:054572 × 10−34 kgm2=s2 −35 G = lP 1:616255 × 10 m −8 ÷ mP 2:176434 × 10 kg × c 299; 792; 458 m=s × c 299; 792; 458 m=s = 6:67430 × 10−11 m3=kgs2 The knowledge that ~ and G are comprised of more fundamental quantities is a basis for reinterpreting physical laws explained by these two constants. For all the equations that rely on Planck’s constant and the gravitational constant, it is in the relationships between a handful of Planck units that we obtain definitive predictions about the world. Table 2 gives an extensive list of physical constants restated in fundamental quantities of length, mass, and time. Each constant is defined in elementary form using the three fun- damental Planck units, and additional forms are given in units of Planck energy, Planck momentum, and the speed of light. Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 3 June 2020 doi:10.20944/preprints202006.0017.v1 On the Fundamental Constants of Nature 3 Table 2: Traditional constants are composites of more fundamental quantities of length, mass, and time. The elementary form of these constants reveals physical meaning that was previously obfuscated by the composite values. Constant Sym Std form Elem form Alt forms MKS value EM value r ~G −35 Planck length lp [1] lp - 1:616255 × 10 m - c3 r ~c Planck mass m [1] m - 2:176434 × 10−8kg - p G p r ~G −44 Planck time tp [1] tp - 5:391247 × 10 s - c5 r 3 ~c lpmp kgm Planck momentum pp [4, 5] mpc 6:524784 s - G tp r 2 ~c5 lpmp 2 Planck energy E [4, 9] m c2 1; 956; 081; 000 kgm - p 2 p s2 G tp l2 m p p −34 kgm2 Reduced Planck const ~ - lp pp, Eptp 1:054571 × 10 s - tp 3 lp lp 3 Gravitational const G - c2 6:67430 × 10−11 m - 2 kgs2 mptp mp lp lp m Speed of light c - 299; 792; 458 s - tp tp p −44 −18 Planck charge qp 4π0~c [4, 8, 10] tp - 5:391247 × 10 s 1:876 × 10 C 4π~α p −45 −19 Elementary charge e; q [11] tp α - 4:605448 × 10 s 1:602 × 10 C µ0c 4 1 tp tp 4 Electric permittivity [11] 7:315968 × 10−63 s 8:854 × 10−12 F 0 2 3 2 kgm3 m µ0c 4πlpmp 4πppc 3 1 lpmp pp 3 2 Coulomb const k c2 1:087723 × 1061 kgm 8:988 × 109 Nm e 4 s4 C2 4π0 tp tp 4πα~ lpmp pp Magnetic permeability µ [11] 4π 4π 1:520851 × 1045 kgm 1:256 × 10−6 N 0 2 2 s2 A2 e c tp tp s 4 2 c lpmp Ep Ep 2 Voltage V [12] , 3:628253 × 1052 kgm 1:043 × 1027V p 3 s3 4πG0 tp tp qp r 6 4π0c tp qp tp 25 Current Ip [12] , 1 3:479 × 10 A G tp tp qp r 2 1 ~G lpmp 2 Inductance L [12] E 1; 956; 081; 000 kgm 1:616 × 10−42H p 7 2 p s2 4π0 c tp s 5 c mp pp Magnetic inductance B [12] 7:488021 × 1078 kg 2:152 × 1053T p 2 2 s2 4π0~G tp lptp Continued on next page Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 3 June 2020 doi:10.20944/preprints202006.0017.v1 4 Table 2 (continued) Constant Sym Std form Elem form Alt forms MKS value EM value 3 tp tp qp 3 Conductance G 4π c , 2:756147 × 10−53 s 0:03336S p 0 2 kgm2 lpmp Ep Ep 2 1 lpmp Ep Ep 2 Impedance Z [12] , 3:628253 × 1052 kgm 29:98Ω p 3 s3 4π0c tp tp qp 2 lpmp Ep 2 Impedance of vacuum Z µ c [11] 4π 4π 4:559397 × 1053 kgm 376:7Ω 0 0 3 s3 tp tp r 4 2 ~G tp tp 4 Capacitance C 4π [12] 1:485907 × 10−96 s 1:798326 × 10−45F p 0 3 2 kgm2 c lpmp Ep e2 Fine structure α [11] - - :0072973525693 - 4π0~c 2 2 α mec meα 1 Rydberg constant R1 [11] - 10973732 m - 2h 4πlpmp 2 2 1 meα lp 1 2 Rydberg energy hcR m α2c2 [11] m α2c2 2:179872 × 10−18 kgm - 1 e 2 e s2 2 2tp 2 2 2π~ πlpmp π 2 Magnetic flux quantum φ [11] p p E 7:193730 × 1010 kgm 2:067834 × 10−15Wb 0 2 p s2 2e αtp α 2 2π~ 2πmplp 2πEp 2 von Klitzing R [11] 3:124008 × 1055 kgm 25; 812:81Ω K 2 3 s3 e αtp αtp p 2 p 2e αtp α 2 Josephson K [11] 1:390100 × 10−11 s 4:835978 × 1014 Hz J 2 kgm2 V h πlpmp πEp p e~ α mp 2 −49 2 −24 J Bohr magneton µB [11] lp - 2:665808 × 10 m 9:274010 × 10 T 2me 2 me 6 G GF tp G Fermi coupling F [11] F 1:166379 × 10−5Ge=V2 - 3 3 9 3 3 3 ~ c lpmp lpEp 2 3 2e αtp αtp 3 Conductance quantum G [11] 6:402033 × 10−56 s 7:748092 × 10−5S 0 2 kgm2 2π~ πlpmp πEp lP lp −28 m Linear mass density - - 7:426161 × 10 kg - mP mp −43 Quantum constant lPmP - lpmp - 3:517672 × 10 kgm - 4 c mplp pp Ep 2 Force F , 1:210255 × 1044 kgm - p 2 s2 G tp tp lp r c7 lp c Acceleration a 5:560725 × 1051 m - p 2 s2 ~G tp tp α=Fine structure constant; A=ampere; C=coulomb; EP=Planck energy; F=farad; H=henry; kg=kilogram; lP=Planck length; m=meter; me=electron mass; mP=Planck mass; pP=Planck momentum; N=newton; s=second; tP=Planck time; S=siemens; T=tesla; W=weber; V=volt; Ω=ohm Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 3 June 2020 doi:10.20944/preprints202006.0017.v1 On the Fundamental Constants of Nature 5 2 Functions and Equations The benefits of replacing traditional constants with Planck units becomes clear in the refor- mulated versions of physical equations.
Recommended publications
  • New Realization of the Ohm and Farad Using the NBS Calculable Capacitor
    IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 38, NO. 2, APRIL 1989 249 New Realization of the Ohm and Farad Using the NBS Calculable Capacitor JOHN Q. SHIELDS, RONALD F. DZIUBA, MEMBER, IEEE,AND HOWARD P. LAYER Abstrucl-Results of a new realization of the ohm and farad using part of the NBS effort. This paper describes our measure- the NBS calculable capacitor and associated apparatus are reported. ments and gives our latest results. The results show that both the NBS representation of the ohm and the NBS representation of the farad are changing with time, cNBSat the rate of -0.054 ppmlyear and FNssat the rate of 0.010 ppm/year. The 11. AC MEASUREMENTS realization of the ohm is of particular significance at this time because The measurement sequence used in the 1974 ohm and of its role in assigning an SI value to the quantized Hall resistance. The farad determinations [2] has been retained in the present estimated uncertainty of the ohm realization is 0.022 ppm (lo) while the estimated uncertainty of the farad realization is 0.014 ppm (la). NBS measurements. A 0.5-pF calculable cross-capacitor is used to measure a transportable 10-pF reference capac- itor which is carried to the laboratory containing the NBS I. INTRODUCTION bank of 10-pF fused silica reference capacitors. A 10: 1 HE NBS REPRESENTATION of the ohm is bridge is used in two stages to measure two 1000-pF ca- T based on the mean resistance of five Thomas-type pacitors which are in turn used as two arms of a special wire-wound resistors maintained in a 25°C oil bath at NBS frequency-dependent bridge for measuring two 100-kQ Gaithersburg, MD.
    [Show full text]
  • Metric System Units of Length
    Math 0300 METRIC SYSTEM UNITS OF LENGTH Þ To convert units of length in the metric system of measurement The basic unit of length in the metric system is the meter. All units of length in the metric system are derived from the meter. The prefix “centi-“means one hundredth. 1 centimeter=1 one-hundredth of a meter kilo- = 1000 1 kilometer (km) = 1000 meters (m) hecto- = 100 1 hectometer (hm) = 100 m deca- = 10 1 decameter (dam) = 10 m 1 meter (m) = 1 m deci- = 0.1 1 decimeter (dm) = 0.1 m centi- = 0.01 1 centimeter (cm) = 0.01 m milli- = 0.001 1 millimeter (mm) = 0.001 m Conversion between units of length in the metric system involves moving the decimal point to the right or to the left. Listing the units in order from largest to smallest will indicate how many places to move the decimal point and in which direction. Example 1: To convert 4200 cm to meters, write the units in order from largest to smallest. km hm dam m dm cm mm Converting cm to m requires moving 4 2 . 0 0 2 positions to the left. Move the decimal point the same number of places and in the same direction (to the left). So 4200 cm = 42.00 m A metric measurement involving two units is customarily written in terms of one unit. Convert the smaller unit to the larger unit and then add. Example 2: To convert 8 km 32 m to kilometers First convert 32 m to kilometers. km hm dam m dm cm mm Converting m to km requires moving 0 .
    [Show full text]
  • Optical Properties of Bulk and Nano
    Lecture 3: Optical Properties of Bulk and Nano 5 nm Course Info First H/W#1 is due Sept. 10 The Previous Lecture Origin frequency dependence of χ in real materials • Lorentz model (harmonic oscillator model) e- n(ω) n' n'' n'1= ω0 + Nucleus ω0 ω Today optical properties of materials • Insulators (Lattice absorption, color centers…) • Semiconductors (Energy bands, Urbach tail, excitons …) • Metals (Response due to bound and free electrons, plasma oscillations.. ) Optical properties of molecules, nanoparticles, and microparticles Classification Matter: Insulators, Semiconductors, Metals Bonds and bands • One atom, e.g. H. Schrödinger equation: E H+ • Two atoms: bond formation ? H+ +H Every electron contributes one state • Equilibrium distance d (after reaction) Classification Matter ~ 1 eV • Pauli principle: Only 2 electrons in the same electronic state (one spin & one spin ) Classification Matter Atoms with many electrons Empty outer orbitals Outermost electrons interact Form bands Partly filled valence orbitals Filled Energy Inner Electrons in inner shells do not interact shells Do not form bands Distance between atoms Classification Matter Insulators, semiconductors, and metals • Classification based on bandstructure Dispersion and Absorption in Insulators Electronic transitions No transitions Atomic vibrations Refractive Index Various Materials 3.4 3.0 2.0 Refractive index: n’ index: Refractive 1.0 0.1 1.0 10 λ (µm) Color Centers • Insulators with a large EGAP should not show absorption…..or ? • Ion beam irradiation or x-ray exposure result in beautiful colors! • Due to formation of color (absorption) centers….(Homework assignment) Absorption Processes in Semiconductors Absorption spectrum of a typical semiconductor E EC Phonon Photon EV ωPhonon Excitons: Electron and Hole Bound by Coulomb Analogy with H-atom • Electron orbit around a hole is similar to the electron orbit around a H-core • 1913 Niels Bohr: Electron restricted to well-defined orbits n = 1 + -13.6 eV n = 2 n = 3 -3.4 eV -1.51 eV me4 13.6 • Binding energy electron: =−=−=e EB 2 2 eV, n 1,2,3,..
    [Show full text]
  • Dimensional Analysis and the Theory of Natural Units
    LIBRARY TECHNICAL REPORT SECTION SCHOOL NAVAL POSTGRADUATE MONTEREY, CALIFORNIA 93940 NPS-57Gn71101A NAVAL POSTGRADUATE SCHOOL Monterey, California DIMENSIONAL ANALYSIS AND THE THEORY OF NATURAL UNITS "by T. H. Gawain, D.Sc. October 1971 lllp FEDDOCS public This document has been approved for D 208.14/2:NPS-57GN71101A unlimited release and sale; i^ distribution is NAVAL POSTGRADUATE SCHOOL Monterey, California Rear Admiral A. S. Goodfellow, Jr., USN M. U. Clauser Superintendent Provost ABSTRACT: This monograph has been prepared as a text on dimensional analysis for students of Aeronautics at this School. It develops the subject from a viewpoint which is inadequately treated in most standard texts hut which the author's experience has shown to be valuable to students and professionals alike. The analysis treats two types of consistent units, namely, fixed units and natural units. Fixed units include those encountered in the various familiar English and metric systems. Natural units are not fixed in magnitude once and for all but depend on certain physical reference parameters which change with the problem under consideration. Detailed rules are given for the orderly choice of such dimensional reference parameters and for their use in various applications. It is shown that when transformed into natural units, all physical quantities are reduced to dimensionless form. The dimension- less parameters of the well known Pi Theorem are shown to be in this category. An important corollary is proved, namely that any valid physical equation remains valid if all dimensional quantities in the equation be replaced by their dimensionless counterparts in any consistent system of natural units.
    [Show full text]
  • Summary of Changes for Bidder Reference. It Does Not Go Into the Project Manual. It Is Simply a Reference of the Changes Made in the Frontal Documents
    Community Colleges of Spokane ALSC Architects, P.S. SCC Lair Remodel 203 North Washington, Suite 400 2019-167 G(2-1) Spokane, WA 99201 ALSC Job No. 2019-010 January 10, 2020 Page 1 ADDENDUM NO. 1 The additions, omissions, clarifications and corrections contained herein shall be made to drawings and specifications for the project and shall be included in scope of work and proposals to be submitted. References made below to specifications and drawings shall be used as a general guide only. Bidder shall determine the work affected by Addendum items. General and Bidding Requirements: 1. Pre-Bid Meeting Pre-Bid Meeting notes and sign in sheet attached 2. Summary of Changes Summary of Changes for bidder reference. It does not go into the Project Manual. It is simply a reference of the changes made in the frontal documents. It is not a part of the construction documents. In the Specifications: 1. Section 00 30 00 REPLACED section in its entirety. See Summary of Instruction to Bidders Changes for description of changes 2. Section 00 60 00 REPLACED section in its entirety. See Summary of General and Supplementary Conditions Changes for description of changes 3. Section 00 73 10 DELETE section in its entirety. Liquidated Damages Checklist Mead School District ALSC Architects, P.S. New Elementary School 203 North Washington, Suite 400 ALSC Job No. 2018-022 Spokane, WA 99201 March 26, 2019 Page 2 ADDENDUM NO. 1 4. Section 23 09 00 Section 2.3.F CHANGED paragraph to read “All Instrumentation and Control Systems controllers shall have a communication port for connections with the operator interfaces using the LonWorks Data Link/Physical layer protocol.” A.
    [Show full text]
  • Coulomb's Force
    COULOMB’S FORCE LAW Two point charges Multiple point charges Attractive Repulsive - - + + + The force exerted by one point charge on another acts along the line joining the charges. It varies inversely as the square of the distance separating the charges and is proportional to the product of the charges. The force is repulsive if the charges have the same sign and attractive if the charges have opposite signs. q1 Two point charges q1 and q2 q2 [F]-force; Newtons {N} [q]-charge; Coulomb {C} origin [r]-distance; meters {m} [ε]-permittivity; Farad/meter {F/m} Property of the medium COULOMB FORCE UNIT VECTOR Permittivity is a property of the medium. Also known as the dielectric constant. Permittivity of free space Coulomb’s constant Permittivity of a medium Relative permittivity For air FORCE IN MEDIUM SMALLER THAN FORCE IN VACUUM Insert oil drop Viewing microscope Eye Metal plates Millikan oil drop experiment Charging by contact Example (Question): A negative point charge of 1µC is situated in air at the origin of a rectangular coordinate system. A second negative point charge of 100µC is situated on the positive x axis at the distance of 500 mm from the origin. What is the force on the second charge? Example (Solution): A negative point charge of 1µC is situated in air at the origin of a rectangular coordinate system. A second negative point charge of 100µC is situated on the positive x axis at the distance of 500 mm from the origin. What is the force on the second charge? Y q1 = -1 µC origin X q2= -100 µC Example (Solution): Y q1 = -1 µC origin X q2= -100 µC END Multiple point charges It has been confirmed experimentally that when several charges are present, each exerts a force given by on every other charge.
    [Show full text]
  • Bohr Model of Hydrogen
    Chapter 3 Bohr model of hydrogen Figure 3.1: Democritus The atomic theory of matter has a long history, in some ways all the way back to the ancient Greeks (Democritus - ca. 400 BCE - suggested that all things are composed of indivisible \atoms"). From what we can observe, atoms have certain properties and behaviors, which can be summarized as follows: Atoms are small, with diameters on the order of 0:1 nm. Atoms are stable, they do not spontaneously break apart into smaller pieces or collapse. Atoms contain negatively charged electrons, but are electrically neutral. Atoms emit and absorb electromagnetic radiation. Any successful model of atoms must be capable of describing these observed properties. 1 (a) Isaac Newton (b) Joseph von Fraunhofer (c) Gustav Robert Kirch- hoff 3.1 Atomic spectra Even though the spectral nature of light is present in a rainbow, it was not until 1666 that Isaac Newton showed that white light from the sun is com- posed of a continuum of colors (frequencies). Newton introduced the term \spectrum" to describe this phenomenon. His method to measure the spec- trum of light consisted of a small aperture to define a point source of light, a lens to collimate this into a beam of light, a glass spectrum to disperse the colors and a screen on which to observe the resulting spectrum. This is indeed quite close to a modern spectrometer! Newton's analysis was the beginning of the science of spectroscopy (the study of the frequency distri- bution of light from different sources). The first observation of the discrete nature of emission and absorption from atomic systems was made by Joseph Fraunhofer in 1814.
    [Show full text]
  • Particle Nature of Matter
    Solved Problems on the Particle Nature of Matter Charles Asman, Adam Monahan and Malcolm McMillan Department of Physics and Astronomy University of British Columbia, Vancouver, British Columbia, Canada Fall 1999; revised 2011 by Malcolm McMillan Given here are solutions to 5 problems on the particle nature of matter. The solutions were used as a learning-tool for students in the introductory undergraduate course Physics 200 Relativity and Quanta given by Malcolm McMillan at UBC during the 1998 and 1999 Winter Sessions. The solutions were prepared in collaboration with Charles Asman and Adam Monaham who were graduate students in the Department of Physics at the time. The problems are from Chapter 3 The Particle Nature of Matter of the course text Modern Physics by Raymond A. Serway, Clement J. Moses and Curt A. Moyer, Saunders College Publishing, 2nd ed., (1997). Coulomb's Constant and the Elementary Charge When solving numerical problems on the particle nature of matter it is useful to note that the product of Coulomb's constant k = 8:9876 × 109 m2= C2 (1) and the square of the elementary charge e = 1:6022 × 10−19 C (2) is ke2 = 1:4400 eV nm = 1:4400 keV pm = 1:4400 MeV fm (3) where eV = 1:6022 × 10−19 J (4) Breakdown of the Rutherford Scattering Formula: Radius of a Nucleus Problem 3.9, page 39 It is observed that α particles with kinetic energies of 13.9 MeV or higher, incident on copper foils, do not obey Rutherford's (sin φ/2)−4 scattering formula. • Use this observation to estimate the radius of the nucleus of a copper atom.
    [Show full text]
  • Package 'Constants'
    Package ‘constants’ February 25, 2021 Type Package Title Reference on Constants, Units and Uncertainty Version 1.0.1 Description CODATA internationally recommended values of the fundamental physical constants, provided as symbols for direct use within the R language. Optionally, the values with uncertainties and/or units are also provided if the 'errors', 'units' and/or 'quantities' packages are installed. The Committee on Data for Science and Technology (CODATA) is an interdisciplinary committee of the International Council for Science which periodically provides the internationally accepted set of values of the fundamental physical constants. This package contains the ``2018 CODATA'' version, published on May 2019: Eite Tiesinga, Peter J. Mohr, David B. Newell, and Barry N. Taylor (2020) <https://physics.nist.gov/cuu/Constants/>. License MIT + file LICENSE Encoding UTF-8 LazyData true URL https://github.com/r-quantities/constants BugReports https://github.com/r-quantities/constants/issues Depends R (>= 3.5.0) Suggests errors (>= 0.3.6), units, quantities, testthat ByteCompile yes RoxygenNote 7.1.1 NeedsCompilation no Author Iñaki Ucar [aut, cph, cre] (<https://orcid.org/0000-0001-6403-5550>) Maintainer Iñaki Ucar <[email protected]> Repository CRAN Date/Publication 2021-02-25 13:20:05 UTC 1 2 codata R topics documented: constants-package . .2 codata . .2 lookup . .3 syms.............................................4 Index 6 constants-package constants: Reference on Constants, Units and Uncertainty Description This package provides the 2018 version of the CODATA internationally recommended values of the fundamental physical constants for their use within the R language. Author(s) Iñaki Ucar References Eite Tiesinga, Peter J. Mohr, David B.
    [Show full text]
  • Electron-Positron Pairs in Physics and Astrophysics
    Electron-positron pairs in physics and astrophysics: from heavy nuclei to black holes Remo Ruffini1,2,3, Gregory Vereshchagin1 and She-Sheng Xue1 1 ICRANet and ICRA, p.le della Repubblica 10, 65100 Pescara, Italy, 2 Dip. di Fisica, Universit`adi Roma “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Roma, Italy, 3 ICRANet, Universit´ede Nice Sophia Antipolis, Grand Chˆateau, BP 2135, 28, avenue de Valrose, 06103 NICE CEDEX 2, France. Abstract Due to the interaction of physics and astrophysics we are witnessing in these years a splendid synthesis of theoretical, experimental and observational results originating from three fundamental physical processes. They were originally proposed by Dirac, by Breit and Wheeler and by Sauter, Heisenberg, Euler and Schwinger. For almost seventy years they have all three been followed by a continued effort of experimental verification on Earth-based experiments. The Dirac process, e+e 2γ, has been by − → far the most successful. It has obtained extremely accurate experimental verification and has led as well to an enormous number of new physics in possibly one of the most fruitful experimental avenues by introduction of storage rings in Frascati and followed by the largest accelerators worldwide: DESY, SLAC etc. The Breit–Wheeler process, 2γ e+e , although conceptually simple, being the inverse process of the Dirac one, → − has been by far one of the most difficult to be verified experimentally. Only recently, through the technology based on free electron X-ray laser and its numerous applications in Earth-based experiments, some first indications of its possible verification have been reached. The vacuum polarization process in strong electromagnetic field, pioneered by Sauter, Heisenberg, Euler and Schwinger, introduced the concept of critical electric 2 3 field Ec = mec /(e ).
    [Show full text]
  • 1.3.4 Atoms and Molecules Name Symbol Definition SI Unit
    1.3.4 Atoms and molecules Name Symbol Definition SI unit Notes nucleon number, A 1 mass number proton number, Z 1 atomic number neutron number N N = A - Z 1 electron rest mass me kg (1) mass of atom, ma, m kg atomic mass 12 atomic mass constant mu mu = ma( C)/12 kg (1), (2) mass excess ∆ ∆ = ma - Amu kg elementary charge, e C proton charage Planck constant h J s Planck constant/2π h h = h/2π J s 2 2 Bohr radius a0 a0 = 4πε0 h /mee m -1 Rydberg constant R∞ R∞ = Eh/2hc m 2 fine structure constant α α = e /4πε0 h c 1 ionization energy Ei J electron affinity Eea J (1) Analogous symbols are used for other particles with subscripts: p for proton, n for neutron, a for atom, N for nucleus, etc. (2) mu is equal to the unified atomic mass unit, with symbol u, i.e. mu = 1 u. In biochemistry the name dalton, with symbol Da, is used for the unified atomic mass unit, although the name and symbols have not been accepted by CGPM. Chapter 1 - 1 Name Symbol Definition SI unit Notes electronegativity χ χ = ½(Ei +Eea) J (3) dissociation energy Ed, D J from the ground state D0 J (4) from the potential De J (4) minimum principal quantum n E = -hcR/n2 1 number (H atom) angular momentum see under Spectroscopy, section 3.5. quantum numbers -1 magnetic dipole m, µ Ep = -m⋅⋅⋅B J T (5) moment of a molecule magnetizability ξ m = ξB J T-2 of a molecule -1 Bohr magneton µB µB = eh/2me J T (3) The concept of electronegativity was intoduced by L.
    [Show full text]
  • Improving the Accuracy of the Numerical Values of the Estimates Some Fundamental Physical Constants
    Improving the accuracy of the numerical values of the estimates some fundamental physical constants. Valery Timkov, Serg Timkov, Vladimir Zhukov, Konstantin Afanasiev To cite this version: Valery Timkov, Serg Timkov, Vladimir Zhukov, Konstantin Afanasiev. Improving the accuracy of the numerical values of the estimates some fundamental physical constants.. Digital Technologies, Odessa National Academy of Telecommunications, 2019, 25, pp.23 - 39. hal-02117148 HAL Id: hal-02117148 https://hal.archives-ouvertes.fr/hal-02117148 Submitted on 2 May 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Improving the accuracy of the numerical values of the estimates some fundamental physical constants. Valery F. Timkov1*, Serg V. Timkov2, Vladimir A. Zhukov2, Konstantin E. Afanasiev2 1Institute of Telecommunications and Global Geoinformation Space of the National Academy of Sciences of Ukraine, Senior Researcher, Ukraine. 2Research and Production Enterprise «TZHK», Researcher, Ukraine. *Email: [email protected] The list of designations in the text: l
    [Show full text]