Big Bang Quiz
... 8) Which of the following is true? a) The temperature of space in the universe is 0 Kelvin. b) A tiny amount of heat left over from the Big Bang is spread around the universe. c) Galaxies and the space between them are the same temperature. d) There is no evidence for the Big Bang beyond the expandi ...
... 8) Which of the following is true? a) The temperature of space in the universe is 0 Kelvin. b) A tiny amount of heat left over from the Big Bang is spread around the universe. c) Galaxies and the space between them are the same temperature. d) There is no evidence for the Big Bang beyond the expandi ...
Review for Midterm—Chapter 1
... • Speed of light is not affected by the motion of the light source • Speed of light DO CHANGE in different medium. – How do we characterize light? Particles, Waves • Wavelength • Frequency • Energy – What’s the energy of different ‘type’ of light? – How is the energy, wavelength, frequency, and colo ...
... • Speed of light is not affected by the motion of the light source • Speed of light DO CHANGE in different medium. – How do we characterize light? Particles, Waves • Wavelength • Frequency • Energy – What’s the energy of different ‘type’ of light? – How is the energy, wavelength, frequency, and colo ...
Radiative Processes Overview
... 1. Consider a (very unrealistic) region of gas associated with a cluster of galaxies with a diameter of 1 Mpc, a temperature of 107 K and a density of 0.1 cm3. What would be the cooling time and total luminosity due to Bremsstrahlung? 2. If the cooling time is then compared to the age of the univers ...
... 1. Consider a (very unrealistic) region of gas associated with a cluster of galaxies with a diameter of 1 Mpc, a temperature of 107 K and a density of 0.1 cm3. What would be the cooling time and total luminosity due to Bremsstrahlung? 2. If the cooling time is then compared to the age of the univers ...
PREFACE The Thesis entitled "Spectroscopic properties of diatomic
... chemistry, astrochemistry and cometary spectra. They are also important for the determination of the molecular structure, population of the vibrational levels in the upper electronic state involved in a transition, radiative lifetime, vibrational temperature and kinetics of energy transfer in stella ...
... chemistry, astrochemistry and cometary spectra. They are also important for the determination of the molecular structure, population of the vibrational levels in the upper electronic state involved in a transition, radiative lifetime, vibrational temperature and kinetics of energy transfer in stella ...
The Interior Structure of Neutron Stars
... Neutron drip proceeds from ρdrip=(4.3)(1014)kg/m3 until all nuclei have dripped free of nuclei by ρnuclear=(2.7)(1017)kg/m3 At very slightly higher densities we reach the muon Fermi energy and these will be created & we have neutron fluid + proton fluid + electrons + muons There are other complicati ...
... Neutron drip proceeds from ρdrip=(4.3)(1014)kg/m3 until all nuclei have dripped free of nuclei by ρnuclear=(2.7)(1017)kg/m3 At very slightly higher densities we reach the muon Fermi energy and these will be created & we have neutron fluid + proton fluid + electrons + muons There are other complicati ...
Thermal Bremsstrahlung - Ira-Inaf
... Free electrons are accelerated (decelerated) in the Coulomb field of atomic (ionized) nuclei (freefree) and radiate energy Electrons and nuclei are in thermal equilibrium at the temperature T Electrons move at velocity v wrt the ions and during ''collisions'' are deflected. The electrostatic intera ...
... Free electrons are accelerated (decelerated) in the Coulomb field of atomic (ionized) nuclei (freefree) and radiate energy Electrons and nuclei are in thermal equilibrium at the temperature T Electrons move at velocity v wrt the ions and during ''collisions'' are deflected. The electrostatic intera ...
Lectures 7
... (p is the momentum of the particle, B the magnetic field, q the charge) In handier units r=3.3x107γ/B(gauss)cm ; γ is the relativistic factor sqrt(1/(1-v2/c2)) With B~5uG the gyroradius of a proton with γ~104 (a typical value) is ~10-4 pc. so cosmic rays are trapped within the Galaxy by the magnetic ...
... (p is the momentum of the particle, B the magnetic field, q the charge) In handier units r=3.3x107γ/B(gauss)cm ; γ is the relativistic factor sqrt(1/(1-v2/c2)) With B~5uG the gyroradius of a proton with γ~104 (a typical value) is ~10-4 pc. so cosmic rays are trapped within the Galaxy by the magnetic ...
SIMPLE RADIATION TRANSFER FOR SPHERICAL STARS
... The emergence of the local Eddington luminosity, 4πcGMr /κ is not a coincidence and is gratifying. ...
... The emergence of the local Eddington luminosity, 4πcGMr /κ is not a coincidence and is gratifying. ...
Atomic Physics Applications
... Conservation of energy requires that the electron kinetic energy equal the maximum photon energy where we neglect the work function because it is normally so small compared to the potential energy of the electron. This yields the Duane-Hunt limit which was first found experimentally. The photon wave ...
... Conservation of energy requires that the electron kinetic energy equal the maximum photon energy where we neglect the work function because it is normally so small compared to the potential energy of the electron. This yields the Duane-Hunt limit which was first found experimentally. The photon wave ...
How can you get involved in research?
... “Arcs” of light from background galaxies bent by the gravitational mass of the galaxy cluster in the foreground. This is evidence for ...
... “Arcs” of light from background galaxies bent by the gravitational mass of the galaxy cluster in the foreground. This is evidence for ...
Microplasma
Microplasmas are plasmas of small dimensions, ranging from tens to thousands of micrometers. They can be generated at a variety of temperatures and pressures, existing as either thermal or non-thermal plasmas. Non-thermal microplasmas that can maintain their state at standard temperatures and pressures are readily available and accessible to scientists as they can be easily sustained and manipulated under standard conditions. Therefore, they can be employed for commercial, industrial, and medical applications, giving rise to the evolving field of microplasmas.