The classic solution for homogeneous sphere was suggested in 1899 by A.E.N. Love [ 330 ], in 1908 by G. Mie [ 342 ] and in 1909 by P. Debye [ 199 ]. ... Traditionally the theory of light scattering by a sphere is called the Mie theory. ... The exact solutions of the Mie problem for an optically active sphere (i.e. a sphere of optically active material [ 7 ]) and for a sphere with an optically active mantle were first obtained in 1974-5 by S. Bohren [ 158 , 159 ]. ...

... Acceleration of particles in the vicinity of a massive black hole We propose a two-step mechanism for charged particle acceleration in the magnetosphere of a massive black hole surrounded by an accretion disk. Particles first gain energy by stochastic process during the accretion phase. It is shown that effective proton acceleration up to energies eV is possible in the turbulent magnetized accretion disk. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

... The Sun is the closest star to us, and a regular object in our Galaxy. Solar activity manifests itself, primarily, in solar flares - episodic explosive energy release in the form of electromagnetic radiation and high energy particles (electrons and protons). The nature of the flares is related to cyclic variations of global and local magnetic fields in the atmosphere of the Sun. ... Such formations are called active regions. ...

Wave-Particle Duality of Light. click here to see a wave experiment . ... In the wave theory, greater light intensity simply means more photons. Each photon ejects electrons in the same way, so more intensity means more electrons. Threshold frequency and electron K.E. should not be affected by intensity. ... Light frequencies below the threshold eject no electrons, no matter how intense the light. Light frequencies above the threshold eject electrons, no matter how low the intensity. ...

... Ah ha~ Once I questioned, ?what is systematic error?? (see [Q] systematic error. Thanks to L. Lyons? work discussed in [ArXiv] Particle Physics , I found this paper, titled Systematic Errors describing the concept and statistical inference related to systematic errors in the field of particle physics. ... Tags: coverage , Heinrich , likelihood , Lyons , nuisance parameter , objective priors , p-value , particle physics , statistical error , subjective priors , systematic error . ...

... These trajectories have an initial flight from the Earth to a large distance (of about 1.5 million km), the following passive flight to the Moon's orbit, an approach to the Moon with a decrease of an energy of a particle (spacecraft) selenocentric motion to a negative value and the temporary capture in an elliptic orbit of the Moon's satellite. ... Several trajectories of this type are determined. ... Ivashkin V. V. On optimal trajectories of space flight to the Moon in the Earth--Moon--Sun system. ...

... Direct data transmission rate (Mbps) . ... the density of electron fluexs with energies in four bands from 0.04 MeV to 1.7 MeV; . ... sensor (TV, IR) data and heliogeophisical information (HGI) transmission to data receiving and processing centers at a rate of up to 2.56 Mbps; . ... 1.76 GHz - TV- and heliogeophysical information and DCLI's data transmission to data receiving and processing centers; . 7.5 GHz - TV- and heliogeophisical data transmission to data receiving and processing centers; . ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... Moon Resource Guide . Science Fiction with Good Astronomy . ... A somewhat ordinary murder mystery, but the murder was committed using a meteorite in a university setting. back to topic list . ... A touching story by an astronomer about international cooperation as the Moon is colonized. ... A fictional physicist muses on the transformation of classical physics in the early years of the twentieth century; written by a historian of science. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... One of the rarest but most interesting effects which can be observed with the Irkutsk IS radar is anomal high power signal registraion(coherent echo) due to strong magnetic storms. ... These signals are formed at E-layer heights in the presence of a strong electric field which causes particles to drift. ...

... GCR and SCR are primary cosmic rays. 10-15 years after the discovery of cosmic radiation (1919) there emerged two main avenues of investigation in the physics of cosmic rays (CR): 1) nuclear - elucidation of the origin of elementary particles and nuclear interactions; and 2) astrophysical (space physics) - solution of the problem related to the origin and variations (changes in intensity) of CR. ... Besides, the CR flux in interplanetary space is, strictly speaking, not isotropic. ...

A limit on the ultra-high-energy neutrino flux from Centaurus A Justin Bray For the LUNASKA collaboration Clancy James, Ron Ekers, Chris Phillips, Paul Roberts, John Reynolds, Rebecca McFadden, Ray Protheroe, Jaime Alvarez-MuЯiz, Justin Bray Outline: · Ultra-high-energy (UHE) cosmic rays neutrinos · Detecting UHE neutrinos · The lunar Cherenkov technique · Observations with the ATCA · Observations with Parkes · ASKAP and the future ... Detection Geometry Neutrinos are penetrating.. ...

Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Particle Physics at the LHC and Cosmology? by Michael Tuts . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

ПЕРЕЛ?К ПУБЛ?КАЦ?Й СП?ВРОБ?ТНИК?В ГАО . ... Гуртовенко Э.А. Солнечный горизонтальный телескоп АЦУ-5 с монохрамотором двойной дифракции. ... Гуртовенко Э.А. Об определении оптической глубины в разных частях контура фраунгоферовой линии. ... Скорик К.Е. Гуртовенко Э.А. Спектральные наблюдения хромосферы и короны во время полного солнечного затмения 7 марта 1970 года. ... Гуртовенко Э.А. Кондрашова Н.Н. Изменение профилей центр-край слабых фраунгоферовых линий. ...

... Study of charged particles dynamics in magnetic field under microgravity conditions ( «Kulonovskiy Kristall» ) . Basic research of charged particles behavior mechanism under microgravity conditions . ... Testing the methods and aids to conduct biotechnological studies under space flight conditions . ... Development of the methods and onboard techniques to provide aseptic conditions for conduct of biotechnological experiments under manned space flight conditions ( «Aseptic» ) . ...

... Before the modern era of technological astronomy, to know anything about the Universe beyond our planet we relied on light. ... Historically the two rival ideas were that light was either a stream of tiny bullet-like particles or a wave wobbling its way through space. ... The light we see (visible light which is not the tautology it sounds) is only part of the electromagnetic spectrum, a great sweep of radiations which also includes radio, infra-red, ultra-violet, x-rays and gamma rays. ...

2005, 31, 8, . ... 11) tg esc = Bm /B - 1 bm /b - 1 (8) (11), , 1 l2 b tg2 0 = bm /b - 1 1 = bm - b. (12) l2 tg2 0 (10) : K = K0 sin2 0 1 +b . ... f0 (K0 ) : dN (K0 ,0 ) = N0 f0 (K0 )dK0 2 sin 0 d0 , 31 8 2005 (12), Kesc = K0 bm sin2 0 . ... 2 8 2005 606 , 2.0 () 1.5 1.0 c 0.5 a 4 y 0 2.0 р 1.5 b 1.0 a 0.5 (·) b , , .. , : -esc N =N 0 esc /2 f ()2 sin d = (31) = N0 l b esc sin d sin2 + bl2 cos2 3/2 . ... K N0 : -esc c F =N 0 0 esc f (K,)KdK2 sin d; (46) 0.8 0.6 l 0.4 0.2 a 0 100 - esc (. (11)), -, . ...

Chair of solid state physics . ... One-particle Green’s function (Non interacting fermions) . Verbal definition of retarded one-particle Green’s function. ... One-particle Green’s function (Interacting fermions) . Formal definition of one-particle Green’s function. ... Quasi particles in Hartree-Fock approximation. ... Quasi particles and one-particle Green’s function. ... Vertex function and scattering of quasi particles. ... Matsubara Green’s function foe free particles. ...

... Measurements of magnetic fields on scales larger than galaxy clusters are needed to distinguish between fields generated in the primordial Universe and those generated at later epochs, with implications for particle physics, cosmology, and astrophysics. ... In this talk I will review mechanisms for generating magnetic fields across cosmic time, implications for post-recombination physics, and current observational constraints on intergalactic magnetic fields. ...

... The FOC suffers from various types of background, the most important of which are thermal electrons, Cerenkov radiation from high energy particles, geocoronal emission lines, zodiacal light, and light scattered within HST from the bright Earth or Moon. ... From on-orbit measurements using the f /96 camera, the former background has been found to vary with solar zenith distance (ZD); see Sections 6.4, 6.5, and 7.0 of the FOC Instrument Handbook , version 7.0, for more details. ...