PODSTAWY FIZYKI ŚRODOWISKA
... • isotropic: the universe looks the same in all directions on the sky there is no special direction (axis) • unchanging: The universe looks the same at all times there is no special epoch The cosmic microwave background radiation (CMB) = afterglow from the big bang. It’s smooth to 1 part in 105 yes, ...
... • isotropic: the universe looks the same in all directions on the sky there is no special direction (axis) • unchanging: The universe looks the same at all times there is no special epoch The cosmic microwave background radiation (CMB) = afterglow from the big bang. It’s smooth to 1 part in 105 yes, ...
Galaxies and the Universe
... was nothing Alert: Misconception No space; No time this theory as Describing Out of the nothingness “Big Bang” came is aanmisnomer explosion of energy in all directions because there really was not • This an energy gave rise to all the matter explosion, just a release of we know today energy • Thoug ...
... was nothing Alert: Misconception No space; No time this theory as Describing Out of the nothingness “Big Bang” came is aanmisnomer explosion of energy in all directions because there really was not • This an energy gave rise to all the matter explosion, just a release of we know today energy • Thoug ...
Galaxies and the Universe
... was nothing Alert: Misconception No space; No time this theory as Describing Out of the nothingness “Big Bang” came is aanmisnomer explosion of energy in all directions because there really was not • This an energy gave rise to all the matter explosion, just a release of we know today energy • Thoug ...
... was nothing Alert: Misconception No space; No time this theory as Describing Out of the nothingness “Big Bang” came is aanmisnomer explosion of energy in all directions because there really was not • This an energy gave rise to all the matter explosion, just a release of we know today energy • Thoug ...
Science Curriculum Map
... (A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Herztsprung-Russell diagram for classification; (B) recognize that the Sun is a medium-sized star near the edge of a disc-shaped galaxy of stars and that the Sun is many thousands of times clo ...
... (A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Herztsprung-Russell diagram for classification; (B) recognize that the Sun is a medium-sized star near the edge of a disc-shaped galaxy of stars and that the Sun is many thousands of times clo ...
AST101_lect_25
... Olber’s Paradox Suppose the universe is infinite • In whatever direction you look, you will see a star • The brightness of an individual star falls by the inverse square law: I ~ d-2 • The number of stars increases as d2 The night sky should be as bright as the surface of the Sun! ...
... Olber’s Paradox Suppose the universe is infinite • In whatever direction you look, you will see a star • The brightness of an individual star falls by the inverse square law: I ~ d-2 • The number of stars increases as d2 The night sky should be as bright as the surface of the Sun! ...
AST101 Lecture 25 Why is the Night Sky Dark?
... Olber’s Paradox Suppose the universe is infinite • In whatever direction you look, you will see a star • The brightness of an individual star falls by the inverse square law: I ~ d-2 • The number of stars increases as d2 The night sky should be as bright as the surface of the Sun! ...
... Olber’s Paradox Suppose the universe is infinite • In whatever direction you look, you will see a star • The brightness of an individual star falls by the inverse square law: I ~ d-2 • The number of stars increases as d2 The night sky should be as bright as the surface of the Sun! ...
Which model predicts the youngest age for the universe today?
... • Scientists using white dwarf supernovae to measure distances discovered something quite strange ...
... • Scientists using white dwarf supernovae to measure distances discovered something quite strange ...
Galaxies and the Universe
... • Cool non-luminous gas • Massive Neutrinos? • WIMP’s (Weakly Interacting Massive Particles) • Magnetic monopoles • Exotic objects: strings, mini-black holes ...
... • Cool non-luminous gas • Massive Neutrinos? • WIMP’s (Weakly Interacting Massive Particles) • Magnetic monopoles • Exotic objects: strings, mini-black holes ...
Astronomy and Our Origins
... • Scientists believe the entire universe began as a single, one dimensional speck that exploded into existence. • This idea is called the Big Bang Theory! • Do we know for sure…of course not…we could be right or wrong. We will never know. • But we do have a lot of evidence to support our hypothesis. ...
... • Scientists believe the entire universe began as a single, one dimensional speck that exploded into existence. • This idea is called the Big Bang Theory! • Do we know for sure…of course not…we could be right or wrong. We will never know. • But we do have a lot of evidence to support our hypothesis. ...
123mt13a
... The Universe of Aristotle is infinite In the Aristotelian Universe there is no void The observed retrograde motion of Mars Proves Aristotle Wrong The Newtonian universe is infinite The Observed Phases of Venus are expected in the model of Copernicus Tycho successfully detected stellar parallax In th ...
... The Universe of Aristotle is infinite In the Aristotelian Universe there is no void The observed retrograde motion of Mars Proves Aristotle Wrong The Newtonian universe is infinite The Observed Phases of Venus are expected in the model of Copernicus Tycho successfully detected stellar parallax In th ...
The Universe: “Beyond the Big Bang” Video Questions
... 48. Where did the sounds that Penzias and Wilson heard originate? everywhere 49. What was the “smoking gun” that Penzias and Wilson discovered? cosmic background ...
... 48. Where did the sounds that Penzias and Wilson heard originate? everywhere 49. What was the “smoking gun” that Penzias and Wilson discovered? cosmic background ...
The Prelude - Solar Physics and Space Weather
... •At t=10-6 second, the temperature in the universe dropped to the threshold temperature of 1013 K, at which the photons can not produce proton and anti-proton pairs (and neutron and antineutron pairs) •At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to fo ...
... •At t=10-6 second, the temperature in the universe dropped to the threshold temperature of 1013 K, at which the photons can not produce proton and anti-proton pairs (and neutron and antineutron pairs) •At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to fo ...
EXERCISES: Set 2 of 4 Q1: The absolute magnitude of the Sun in
... its observed flux divided by its observed angular area; thus Σ ∝ f /(δθ)2 . For a class of objects that are both standard candles and standard rulers, deduce the functional dependence of Σ on redshift z. Would observing the surface brightness of this class of objects be a useful way of determining c ...
... its observed flux divided by its observed angular area; thus Σ ∝ f /(δθ)2 . For a class of objects that are both standard candles and standard rulers, deduce the functional dependence of Σ on redshift z. Would observing the surface brightness of this class of objects be a useful way of determining c ...
Homework 1 - Course Pages of Physics Department
... 3. Newtonian cosmology. Use Euclidean geometry and Newtonian gravity, so that we interpret the expansion of the universe as an actual motion of galaxies instead of an expansion of space itself. Consider thus a spherical group of galaxies in otherwise empty space. At a sufficiently large scale you ca ...
... 3. Newtonian cosmology. Use Euclidean geometry and Newtonian gravity, so that we interpret the expansion of the universe as an actual motion of galaxies instead of an expansion of space itself. Consider thus a spherical group of galaxies in otherwise empty space. At a sufficiently large scale you ca ...
24.1 The Study of Light
... As the dough rises, raisins that were farther apart travel a greater distance in the same time as those that were closer together. Like galaxies in an expanding universe, the distant raisins move away from one another more rapidly than those that are near one another. ...
... As the dough rises, raisins that were farther apart travel a greater distance in the same time as those that were closer together. Like galaxies in an expanding universe, the distant raisins move away from one another more rapidly than those that are near one another. ...
IOSR Journal of Applied Physics (IOSR-JAP) ISSN: 2278-4861.
... After the super-explosion (The Big-Bang), according to the nebula hypothesis [1], the solar system began as a nebula, an area in the Milky Way Galaxy that was a swirling concentration of cold gas and dust. Due to some perturbation, possibly from the nearby supernova this cloud of gas and dust began ...
... After the super-explosion (The Big-Bang), according to the nebula hypothesis [1], the solar system began as a nebula, an area in the Milky Way Galaxy that was a swirling concentration of cold gas and dust. Due to some perturbation, possibly from the nearby supernova this cloud of gas and dust began ...
Integrative Studies 410 Our Place in the Universe
... close to the Big Bang • Largest known structure: the Great Wall (70 Mpc 200 Mpc!) ...
... close to the Big Bang • Largest known structure: the Great Wall (70 Mpc 200 Mpc!) ...
PowerPoint
... – Addresses Chapters 8, 9, 11-13 only – 29 multiple-choice questions (one 2-pt question – 30 points possible (120% maximum) – Professor Khondkar Karim will proctor exam. ...
... – Addresses Chapters 8, 9, 11-13 only – 29 multiple-choice questions (one 2-pt question – 30 points possible (120% maximum) – Professor Khondkar Karim will proctor exam. ...
Origins of the Universe - Fraser Heights Chess Club
... • A Black Hole is an unimaginably dense region of space where space is curved around it so completely and gravity becomes so strong that nothing, not even light, can escape. • Einstein’s Theory of Gravity predicted the possibility of black holes, but no one believed they actually ...
... • A Black Hole is an unimaginably dense region of space where space is curved around it so completely and gravity becomes so strong that nothing, not even light, can escape. • Einstein’s Theory of Gravity predicted the possibility of black holes, but no one believed they actually ...
Probing the Edge of the Solar System: Formation of
... •At t=10-6 second, the temperature in the universe dropped to the threshold temperature of 1013 K, at which the photons can not produce proton and anti-proton pairs (and neutron and antineutron pairs) •At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to fo ...
... •At t=10-6 second, the temperature in the universe dropped to the threshold temperature of 1013 K, at which the photons can not produce proton and anti-proton pairs (and neutron and antineutron pairs) •At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to fo ...
Universe
The Universe is all of time and space and its contents. The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy. The observable universe is about 28 billion parsecs (91 billion light-years) in diameter at the present time. The size of the whole Universe is not known and may be infinite. Observations and the development of physical theories have led to inferences about the composition and evolution of the Universe.Throughout recorded history, cosmologies and cosmogonies, including scientific models, have been proposed to explain observations of the Universe. The earliest quantitative geocentric models were developed by ancient Greek philosophers and Indian philosophers. Over the centuries, more precise astronomical observations led to Nicolaus Copernicus's heliocentric model of the Solar System and Johannes Kepler's improvement on that model with elliptical orbits, which was eventually explained by Isaac Newton's theory of gravity. Further observational improvements led to the realization that the Solar System is located in a galaxy composed of billions of stars, the Milky Way. It was subsequently discovered that our galaxy is just one of many. On the largest scales, it is assumed that the distribution of galaxies is uniform and the same in all directions, meaning that the Universe has neither an edge nor a center. Observations of the distribution of these galaxies and their spectral lines have led to many of the theories of modern physical cosmology. The discovery in the early 20th century that galaxies are systematically redshifted suggested that the Universe is expanding, and the discovery of the cosmic microwave background radiation suggested that the Universe had a beginning. Finally, observations in the late 1990s indicated the rate of the expansion of the Universe is increasing indicating that the majority of energy is most likely in an unknown form called dark energy. The majority of mass in the universe also appears to exist in an unknown form, called dark matter.The Big Bang theory is the prevailing cosmological model describing the development of the Universe. Space and time were created in the Big Bang, and these were imbued with a fixed amount of energy and matter; as space expands, the density of that matter and energy decreases. After the initial expansion, the Universe cooled sufficiently to allow the formation first of subatomic particles and later of simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars. Assuming that the prevailing model is correct, the age of the Universe is measured to be 7001137990000000000♠13.799±0.021 billion years.There are many competing hypotheses about the ultimate fate of the Universe. Physicists and philosophers remain unsure about what, if anything, preceded the Big Bang. Many refuse to speculate, doubting that any information from any such prior state could ever be accessible. There are various multiverse hypotheses, in which some physicists have suggested that the Universe might be one among many universes that likewise exist.