Greek Alphabet Fundamental constants: Useful conversions:
... New unit of mass m: 1 eV/c2 = mass equivalent of 1 eV (Relativity!) = 1.78.10-36 kg Momentum p: 1 eV/c = 5.34.10-28 kg m/s; p in eV/c = mass in eV/c2 times velocity in units of c Planck contant: ! = h/2π = 197.33 eV/c . nm = 6.582.10-16 eV . s = 0.658 eV/PHz Fine-structure constant: α = e2 / 4πε0!c ...
... New unit of mass m: 1 eV/c2 = mass equivalent of 1 eV (Relativity!) = 1.78.10-36 kg Momentum p: 1 eV/c = 5.34.10-28 kg m/s; p in eV/c = mass in eV/c2 times velocity in units of c Planck contant: ! = h/2π = 197.33 eV/c . nm = 6.582.10-16 eV . s = 0.658 eV/PHz Fine-structure constant: α = e2 / 4πε0!c ...
STRING THEORY
... There are solutions to be found, but as Sherlock Holmes once said, “It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories instead of theories to suit facts.” Quotations gathered from: http://www.lhup.edu/~dsimanek/sciquote.htm ...
... There are solutions to be found, but as Sherlock Holmes once said, “It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories instead of theories to suit facts.” Quotations gathered from: http://www.lhup.edu/~dsimanek/sciquote.htm ...
Elementary Particles and the Forces of Nature
... collectively as massive vector bosons, that carried the weak force. These were called W+ (pronounced W plus), W- (pronounced W minus), and Zº (pronounced Z naught), and each had a mass of around 100 GeV (GeV stands for gigaelectron-volt, or one thousand million electron volts). The Weinberg-Salam th ...
... collectively as massive vector bosons, that carried the weak force. These were called W+ (pronounced W plus), W- (pronounced W minus), and Zº (pronounced Z naught), and each had a mass of around 100 GeV (GeV stands for gigaelectron-volt, or one thousand million electron volts). The Weinberg-Salam th ...
Where are we going
... After the discovery of Higgs: Where are we going ? Yifang Wang Institute of High Energy Physics, Beijing Feb. 23, 2014，Tsinghua ...
... After the discovery of Higgs: Where are we going ? Yifang Wang Institute of High Energy Physics, Beijing Feb. 23, 2014，Tsinghua ...
magnetic field - The Physics Doctor
... acts on the charged particle at right angles to its motion path AND to the field. This makes the force centripetal and if the particle was not constrained, it would follow a curved path ...
... acts on the charged particle at right angles to its motion path AND to the field. This makes the force centripetal and if the particle was not constrained, it would follow a curved path ...
Atomic Structures Study Guide
... 1). Fill in the names of the atomic particles that show the property described. a. ____________________ -positively charged particle. b. ____________________ -neutral particle. c. ____________________ -negatively charged particle. d. The ____________________ is almost two thousand times larger than ...
... 1). Fill in the names of the atomic particles that show the property described. a. ____________________ -positively charged particle. b. ____________________ -neutral particle. c. ____________________ -negatively charged particle. d. The ____________________ is almost two thousand times larger than ...
Atomic Nucleus (Eng) - George P. Shpenkov
... shape) of all molecules composed of atoms belongs to nucleons rather than electrons as is commonly believed until now. Electrons are responsible only for the strength of these bonds, but not for the direction. A concept of hybridization of atomic orbitals accepted in modern physics and chemistry (se ...
... shape) of all molecules composed of atoms belongs to nucleons rather than electrons as is commonly believed until now. Electrons are responsible only for the strength of these bonds, but not for the direction. A concept of hybridization of atomic orbitals accepted in modern physics and chemistry (se ...
Electrons exhibit both wave
... Here are some experimental facts about blackbody radiation: a. The blackbody spectrum depends only on the temperature of the object, and not on what it is made of. An iron horseshoe, a ceramic vase, and a piece of charcoal --- all emit the same blackbody spectrum if their temperatures are the same. ...
... Here are some experimental facts about blackbody radiation: a. The blackbody spectrum depends only on the temperature of the object, and not on what it is made of. An iron horseshoe, a ceramic vase, and a piece of charcoal --- all emit the same blackbody spectrum if their temperatures are the same. ...
![arXiv:1412.5987v1 [hep-ex] 18 Dec 2014](http://s1.studyres.com/store/data/008057205_1-733500b8b6bd2637f9a7ffd625392271-300x300.png)
10. Nuclear fusion in stars
... 10.2 Slow fusion: the tunnel effect In the quantum-mechanical theory forces between particles act by the transfer of virtual particles, that do not satisfy Heisenberg’s uncertainty principle and can thus not be observed. Written in terms of the particle energy, the uncertainty principle states for t ...
... 10.2 Slow fusion: the tunnel effect In the quantum-mechanical theory forces between particles act by the transfer of virtual particles, that do not satisfy Heisenberg’s uncertainty principle and can thus not be observed. Written in terms of the particle energy, the uncertainty principle states for t ...
The Gluex Experiment - University of Connecticut
... oForce between color-charged particles (mainly quarks) is strong force (responsible for hadrons) ...
... oForce between color-charged particles (mainly quarks) is strong force (responsible for hadrons) ...
Formation of planetesimals in collapsing particle clouds
... where nk is the number density of particles k, σik is the cross-section and Δvik is the relative velocity. From the total collision rate (sum over all possible collision pairs) and a random number you get the time until next collision. With more random numbers and the individual collision rates you ...
... where nk is the number density of particles k, σik is the cross-section and Δvik is the relative velocity. From the total collision rate (sum over all possible collision pairs) and a random number you get the time until next collision. With more random numbers and the individual collision rates you ...
Document
... • “Exotic” pentaquarks are those where the antiquark has a different flavour than the other 4 quarks • Quantum numbers cannot be defined by 3 quarks alone. ...
... • “Exotic” pentaquarks are those where the antiquark has a different flavour than the other 4 quarks • Quantum numbers cannot be defined by 3 quarks alone. ...
Ten Lectures on the ElectroWeak Interactions
... has been omitted. Notice finally the presence in Ψ of a totally neutral spinor N(1, 1)0 , normally not included in the Lagrangian of the Standard Model. We are preparing the ground for the neutrino masses. Altogether this makes a total of 16 Weyl spinors, forming a 6 times reducible representation o ...
... has been omitted. Notice finally the presence in Ψ of a totally neutral spinor N(1, 1)0 , normally not included in the Lagrangian of the Standard Model. We are preparing the ground for the neutrino masses. Altogether this makes a total of 16 Weyl spinors, forming a 6 times reducible representation o ...
GCSE worksheet on the development of the model of the atom
... Instructions for teachers – print page 2 in A3. The idea behind this activity is that students have to read the text about each atomic model and then use this information to draw a model of the atom at each key point along its development. Students will need an understanding of current atomic theory ...
... Instructions for teachers – print page 2 in A3. The idea behind this activity is that students have to read the text about each atomic model and then use this information to draw a model of the atom at each key point along its development. Students will need an understanding of current atomic theory ...
Goldstone Bosons and Chiral Symmetry Breaking in QCD
... Considering the other time ordering, we obtain for the left hand side a massless scalar propagator, pi2 , multiplied by Zfπ pµ , so the equation is now consistent: < Ψ̄Ψ >= ...
... Considering the other time ordering, we obtain for the left hand side a massless scalar propagator, pi2 , multiplied by Zfπ pµ , so the equation is now consistent: < Ψ̄Ψ >= ...
Standard Model
The Standard Model of particle physics is a theory concerning the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known. It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world. The current formulation was finalized in the mid-1970s upon experimental confirmation of the existence of quarks. Since then, discoveries of the top quark (1995), the tau neutrino (2000), and more recently the Higgs boson (2013), have given further credence to the Standard Model. Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as a ""theory of almost everything"".Although the Standard Model is believed to be theoretically self-consistent and has demonstrated huge and continued successes in providing experimental predictions, it does leave some phenomena unexplained and it falls short of being a complete theory of fundamental interactions. It does not incorporate the full theory of gravitation as described by general relativity, or account for the accelerating expansion of the universe (as possibly described by dark energy). The model does not contain any viable dark matter particle that possesses all of the required properties deduced from observational cosmology. It also does not incorporate neutrino oscillations (and their non-zero masses).The development of the Standard Model was driven by theoretical and experimental particle physicists alike. For theorists, the Standard Model is a paradigm of a quantum field theory, which exhibits a wide range of physics including spontaneous symmetry breaking, anomalies, non-perturbative behavior, etc. It is used as a basis for building more exotic models that incorporate hypothetical particles, extra dimensions, and elaborate symmetries (such as supersymmetry) in an attempt to explain experimental results at variance with the Standard Model, such as the existence of dark matter and neutrino oscillations.