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Class Notes for Science at Ryerson University

SCI 102 Lecture Notes - Lecture 6: Virtual Particle, Local Group

PCS181 Notes Inflationary Cosmology = Inflation  Pairs of virtual particles “pop” into existence from the vacuum and quickly annihilate each other  Virtual particles are permitted to exist by the laws...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 3: 30 Foot Fall, Bohr Model

PCS181 Notes The Bohr Model of the Hydrogen Atom:  Proton carries positive charge  Electron carries negative charge  1913: Electron is in circular orbit around the proton  Or...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 4: Cosmic Microwave Background, Radial Velocity, Radio Astronomy

PCS181 Notes Radial Velocity Problem: H spectral line is λ = 656.2850 nm in the lab. Same line is λ = 656.2927 nm in the spectrum of Regulus. Is Regulus approaching or receding? Radial Velocity? vr= (3 x 10 m/s)(656.29...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 2: Electromagnetic Spectrum, Roygbiv, Nanometre

PCS181 Notes The EM Spectrum:  Light: o Mutually perpendicular oscillating electric and magnetic fields 8 o Moves in wavel...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 5: Vera Rubin, Cosmological Constant, Vacuum Energy

PCS181 Notes How to Decide Among the Futures:  Is there sufficient matter to exert a strong gravitational force?  > 5 protons per m of space o Gravity will dominate and re-contract the Universe ...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 1: Reproducibility, Electromagnetic Spectrum

PCS181 Notes: minutes-of-berg.livejournal.com/ The Scientific Method:  Observation  Hypothesis  Experiment  Conclusion  Reproducibility  and is FALSIFIABLE The Electromagnetic Spectrum: ...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 13: Henrietta Swan Leavitt, Stellar Classification, Apparent Magnitude

PCS181 Class Notes The Hertzprung Russell (HR) Diagram  A plot of stellar luminosity (or magnitude) versus surface temperature or spectral type  Harvard Spectral Classification System (= spectral type...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 7: Horse Length, Maarten Schmidt

PCS181 Notes Colour of Galaxies  Sum of colour contributions from its stars  Ellipticals: o Reddish-orange from old stars  Spirals: o Central bulge is reddish-orange from old sta...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 15: Neutron Star, Neutrino, Atomic Nucleus

PCS181 Class Notes Death of Middleweight Stars  These are ~ (8 -> 20) M o o < ~ 5% to 8% of stars are > ~ 4 M o 1. Star undergoes several Red Giant phases producing ever-heavier elements in ...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 11: Triple-Alpha Process, Red Giant, Neutrino

Hydrogen Fusion Reactions = Proton-Proton Chain  1H + H -> H + e + v (deuterium, positron, neutrino)  2H + H -> He + y (helium isotope, radiation burst) 3 3 4 1 1  He + He ->...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 8: Redshift, Parsec, Dominant Wavelength

PCS181 Notes Quasars  Relativistic Velocity Equation: o v = [ (z + 1)2 – 1 / (z + 1)2 + 1 ] • c  Redshifts of quasars are not really Doppler shifts. The QSOs are being carried along...

Science
SCI 102
Margaret Buckby
SCI102 Lecture 9: PCS181 Notes Class 9

PCS181 Notes Interstellar Reddening  Light from a star passes through the dust  The dust particles are ~ same length as blue λ’s  The dust scatter blue l λ’s more than red λ’s  More red photons p...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 12: Hipparcos, Hypotenuse, Star Formation

End of Star Formation:  Stars form in vast interstellar Hydrogen and Helium clouds  As the universe ages, Hydrogen is being transformed into heavier elements inside the stars  The hydrogen compone...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 18: Stellar Black Hole, Active Galactic Nucleus

PCS181 Class Notes Stellar Black Hole  Forms from the gravitational collapse of single star of large mass  Mass ~ 3 M to ~ 100 M o  Rs~ 9 km to 300 km Intermediate Black Hole  Forms fr...

Science
SCI 102
Margaret Buckby
SCI 102 Lecture Notes - Lecture 17: Large Magellanic Cloud, Sn 1987A, Event Horizon

PCS181 Class Notes Typical Neutron “Star”  Mass Range: 1.4 M <oM < ~NSM o  Size ~ 20 – 100 km across ~ about the size of a city  Density similar to that of an atomic nucleus ...

Science
SCI 102
Margaret Buckby
Laboratory Basics - Reference Guides

Lab safety is the cornerstone principle in this compelling Guide. All international safety symbols are clearly defined, with all basic lab glassware and equipment depicted by text description and diagrams. The Guide also p...

ANAT - Anatomy
ANAT 14
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