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Class Notes for Natural Science at York University

NATS 1740 Lecture Notes - Lecture 13: Star Catalogue, Star Chart, Durchmusterung
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find more resources at oneclass.com NATS 1740 Lecture 13 Notes Star Catalogues and Maps Introduction The first actual star catalogue was published by Ptolemy in the second century; this catalogue appe...

Natural Science
NATS 1740
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NATS 1740 Lecture Notes - Lecture 17: Cambrian Explosion, Tardigrade, Cyanobacteria
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NATS1740: 11 February 2019 (+) Laboratory Experiment - Microscopic, enclosed membranes or pre-cells have been created in the lab (+) Chemicals to Life (+) Life migrated to Earth - Venus, Earth and Mars have exchanged tons ...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture 15: 8th February 2019
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find more resources at oneclass.com NATS1740: 8 February 2019 CHAPTER 19: LIFE IN THE UNIVERSE 19.1 LIFE ON EARTH *Understanding goals - When did life arise on Earth? - How there is life? - ...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture 11: NATS 1740 Lecture 11 Notes – Constellations
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find more resources at oneclass.com NATS 1740 Lecture 11 Notes Constellations Introduction The velocity of a star with respect to the Sun can be divided into two components (figure below), one of wh...

Natural Science
NATS 1740
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NATS 1740 Lecture 10: NATS 1740 Lecture 10 Notes – Positional Astronomy
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find more resources at oneclass.com NATS 1740 Lecture 10 Notes Positional Astronomy Introduction The position of a star can be measured either with respect to some reference stars (relative astromet...

Natural Science
NATS 1740
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NATS 1740 Lecture 14: 4th February 2019
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find more resources at oneclass.com NATS1740: 4 February 2019 14.3 BLACK HOLES: GRAVITYS ULTIMATE VICTORY *Understanding goals - Definition - Visiting the black hole - Does it exist? I. What is the black hole? -...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture Notes - Lecture 13: Crab Nebula, Degenerate Matter, Escape Velocity
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NATS 1740: 1 February 2019 14.2 NEUTRON STARS *Understanding goals - Definition - How neutron star was discovered - What can happen to a neutron star in a close binary system? I. What is a neutron star? - A ball of neutron...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture Notes - Lecture 9: Parallax, Horizontal Coordinate System, Stereopsis
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find more resources at oneclass.com NATS 1740 Lecture 9 Notes Parallax, Refraction and Aberration Introduction If we observe an object from different points, we see it in different directions. The di...

Natural Science
NATS 1740
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NATS 1740 Lecture Notes - Lecture 12: White Dwarf, Degenerate Matter, Binary System
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NATS 1740: 30 January 2019 CHAPTER 14: BIZARRE STELLAR GRAVEYARD 14.1 WHITE DWARFS *Understanding goals - Definition - What can happen to a white dwarf in a close binary system? I. What is a white dwarf? - Very tiny in siz...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture 8: NATS 1740 Lecture 8 Notes – Perturbations of Coordinates
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find more resources at oneclass.com NATS 1740 Lecture 8 Notes Perturbations of Coordinates Introduction Even if a star remains fixed with respect to the Sun, its coordinates can change, due to several...

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NATS 1740
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NATS 1740 Lecture Notes - Lecture 11: Triple-Alpha Process, Cno Cycle, Super Giant
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NATS 1740: 28 January 2019 13.3 LIFE AS A HIGH-MASS STAR *Understanding goals - Life stages of a high-mass star - How do high-mass stars make the elements necessary for life - How it dies I. Life Stages of A High-Mass Star...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture Notes - Lecture 10: Brown Dwarf, Triple-Alpha Process, Main Sequence
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NATS 1740: 25 January 2019 - Fusion create thermal temperature (+) Brown dwarfs - A brown dwarf is hot, emits infrared light because of the internal heat left over from the contraction - Its luminosity gradually declines w...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture Notes - Lecture 7: Hour Angle, Ecliptic, Axial Tilt
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find more resources at oneclass.com NATS 1740 Lecture 7 Notes Rising and Setting Times, the Ecliptic System and the Galactic Coordinates Introduction We find the hour angle h of an object at the moment its a...

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NATS 1740
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NATS 1740 Lecture Notes - Lecture 9: Molecular Cloud, Solar System, Flattening
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NATS 1740: 23 January 2019 CHAPTER 13: STAR STUFF 13.1 STAR BIRTH *Understanding goals - Formation of Stars - Massive New Born Stars I. How do Stars Form? - Star-Forming clouds: stars form in a dark clouds of dusty gas in ...

Natural Science
NATS 1740
Michael De Robertis, Alireza Rafiee
NATS 1740 Lecture Notes - Lecture 6: Hour Angle, Spherical Trigonometry, Great Circle
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find more resources at oneclass.com NATS 1740 Lecture 6 Notes Mathematical Point of View Introduction From a mathematical point of view, it does not matter which point on the equator is selected. ...

Natural Science
NATS 1740
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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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