OGT TYPE QUESTIONS
... The half-life of uranium-238 is 4.5 billion years. The half-life of potassium-40 is 1.3 billion years. The half life of carbon-14 is 5,730 years. Therefore, the carbon-14 method would be adequate to date an object that was around 20,000 years old. ...
... The half-life of uranium-238 is 4.5 billion years. The half-life of potassium-40 is 1.3 billion years. The half life of carbon-14 is 5,730 years. Therefore, the carbon-14 method would be adequate to date an object that was around 20,000 years old. ...
Introducing Higher Physics
... conclusive... I believe that this process of deepening of theory has no limits.’ (Albert Einstein, 1917) ...
... conclusive... I believe that this process of deepening of theory has no limits.’ (Albert Einstein, 1917) ...
ISP 205: Visions of the Universe
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
News Analysis - Learning Space
... It simplified large number of physical theories It is not rigid, it is flexible. It can be distorted and warped as large masses move through it. ...
... It simplified large number of physical theories It is not rigid, it is flexible. It can be distorted and warped as large masses move through it. ...
Phys 214. Planets and Life
... Massive stars, with denser and hotter cores, burn faster their fuel than smaller stars, living shorter (only a few million years). Smaller stars, like our Sun, live much longer, 10 billions years. Very small star can live up to hundreds of billions of years. ...
... Massive stars, with denser and hotter cores, burn faster their fuel than smaller stars, living shorter (only a few million years). Smaller stars, like our Sun, live much longer, 10 billions years. Very small star can live up to hundreds of billions of years. ...
Localized wave packet around R 0
... • Q.M. does not describe Our Universe, as it was never H&I (the ensemble was) ( Only the superposition of many U is represented by the H & I Quantum state . Beware:This is not QM!). • Our Universe is Still H&I. • That “it does not matter when the Universe stopped being H&I”, without being able to ev ...
... • Q.M. does not describe Our Universe, as it was never H&I (the ensemble was) ( Only the superposition of many U is represented by the H & I Quantum state . Beware:This is not QM!). • Our Universe is Still H&I. • That “it does not matter when the Universe stopped being H&I”, without being able to ev ...
AST1001.ch1
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
dark matter
... ranging from a few hours to a few weeks. They are are extremely useful because it turns out that their luminosity and period are tightly related – the longer the period, the brighter the Cepheid. The brightest cepheids are many thousands of times brighter than the Sun. This means they can be seen ou ...
... ranging from a few hours to a few weeks. They are are extremely useful because it turns out that their luminosity and period are tightly related – the longer the period, the brighter the Cepheid. The brightest cepheids are many thousands of times brighter than the Sun. This means they can be seen ou ...
Using Galaxy Clusters to Study Structure Evolution
... »Apparent size of a “standard ruler” – Standard ruler is an object whose intrinsic size is known – Apparent (angular) size q provides distance d given intrinsic size r ...
... »Apparent size of a “standard ruler” – Standard ruler is an object whose intrinsic size is known – Apparent (angular) size q provides distance d given intrinsic size r ...
GY 112 Lecture Notes - University of South Alabama
... origin of the Universe. For example, using physical laws, scientists estimated that a Big Bang origin to the Universe would have produced matter consisting almost entirely of hydrogen and helium (75% to 25% respectively). This is pretty close to what we see in the Universe now, which makes the physi ...
... origin of the Universe. For example, using physical laws, scientists estimated that a Big Bang origin to the Universe would have produced matter consisting almost entirely of hydrogen and helium (75% to 25% respectively). This is pretty close to what we see in the Universe now, which makes the physi ...
Where is the antimatter?
... be at least 35,000 years old because of the erosion. (for the first 5,800 years of Earths history, most people thought the Bible was true and the Earth was 6,000 years old. So for him to say the earth was 35,000 years old was scandalous!! ). ...
... be at least 35,000 years old because of the erosion. (for the first 5,800 years of Earths history, most people thought the Bible was true and the Earth was 6,000 years old. So for him to say the earth was 35,000 years old was scandalous!! ). ...
Slide 1
... Even before Hubble’s discovery of the expanding universe, the Russian Alexander Friedman, solving the Einstein's equations, proposed that the galaxies are moving away from each other, He proposed: The universe looks the same in each direction and for all observers wherever they are. How do we unders ...
... Even before Hubble’s discovery of the expanding universe, the Russian Alexander Friedman, solving the Einstein's equations, proposed that the galaxies are moving away from each other, He proposed: The universe looks the same in each direction and for all observers wherever they are. How do we unders ...
Is There Room for God in the Cosmos?
... before he knew the Universe was expanding. – But maybe we already knew > 0 “because” so-called empty space has quantum energy. • In natural units, ~= 0.00000000000000000000000000000000000000000000 ...
... before he knew the Universe was expanding. – But maybe we already knew > 0 “because” so-called empty space has quantum energy. • In natural units, ~= 0.00000000000000000000000000000000000000000000 ...
Dark Matter in the Universe:
... Most (> 90%) of this mass is in the Dark Halo of the Galaxy, which extends out over 500,000 light-years from the center of the Galaxy -much further than the visible disk ...
... Most (> 90%) of this mass is in the Dark Halo of the Galaxy, which extends out over 500,000 light-years from the center of the Galaxy -much further than the visible disk ...
September 3 and 5 slides
... arrive at your eyes (and the farther back in time you are seeing when you look at the more distant object). ...
... arrive at your eyes (and the farther back in time you are seeing when you look at the more distant object). ...
Galactic Rotation and Dark Matter Powerpoint
... Indirect detection experiments search for the products of WIMP annihilation. If WIMPs are Majorana particles (the particle and antiparticle are the same) then two WIMPs colliding could annihilate to produce gamma rays or particle-antiparticle pairs. This could produce a significant number of gamma r ...
... Indirect detection experiments search for the products of WIMP annihilation. If WIMPs are Majorana particles (the particle and antiparticle are the same) then two WIMPs colliding could annihilate to produce gamma rays or particle-antiparticle pairs. This could produce a significant number of gamma r ...
30) Magnetic Mass Flow We will calculate the flow of mass in a
... We define the unit charge by letter e0, expressed in the unit of Ampere seconds. If there are N number of unit charge in a point then the Q value can be written: ...
... We define the unit charge by letter e0, expressed in the unit of Ampere seconds. If there are N number of unit charge in a point then the Q value can be written: ...
Key Topics Astronomy Unit
... 2. If the universe was initially very hot as the big bang suggests, there should be remnants of this radiation. • In 1965, Radioastronomers Arno Penzias and Robert Wilson discovered Cosmic Background Radiation, which supports the Big Bang. 3. The abundance of “light elements” Hydrogen and Helium fou ...
... 2. If the universe was initially very hot as the big bang suggests, there should be remnants of this radiation. • In 1965, Radioastronomers Arno Penzias and Robert Wilson discovered Cosmic Background Radiation, which supports the Big Bang. 3. The abundance of “light elements” Hydrogen and Helium fou ...
Expanding Universe Lab
... The Hubble Law tells us that our Universe is expanding. We observe galaxies, find their distances and their velocities, and find that they are all moving away from us. The more distant the galaxy, the faster it is moving away. From this information, we can estimate the age of our Universe. We assume ...
... The Hubble Law tells us that our Universe is expanding. We observe galaxies, find their distances and their velocities, and find that they are all moving away from us. The more distant the galaxy, the faster it is moving away. From this information, we can estimate the age of our Universe. We assume ...
SAMPLE PUBLIC SERVICE ANNOUNCEMENTS
... Moon, comets, star birth, and distant galaxies, and compares how astronomers centuries ago viewed these phenomena with the discoveries of modern day space ...
... Moon, comets, star birth, and distant galaxies, and compares how astronomers centuries ago viewed these phenomena with the discoveries of modern day space ...
Stars and Galaxies
... Way is part of a cluster called the Local Group. The Local Group is made up of about 45 galaxies in different sizes and shapes. There are three major types of galaxies. ...
... Way is part of a cluster called the Local Group. The Local Group is made up of about 45 galaxies in different sizes and shapes. There are three major types of galaxies. ...
Answers The Universe Year 10 Science Chapter 6
... 2 The Earth spins towards the east. The stars appear to move to the west as we move to the east. 3 Stars, such as our Sun, are formed when spinning clouds of interstellar dust and gas collapse under gravitational attraction. 4 The approximate age of the universe, according to the big bang theory, ...
... 2 The Earth spins towards the east. The stars appear to move to the west as we move to the east. 3 Stars, such as our Sun, are formed when spinning clouds of interstellar dust and gas collapse under gravitational attraction. 4 The approximate age of the universe, according to the big bang theory, ...
CosmoSummary - Boston University Physics
... with wimpering fluctuations of only 1/100,000 of a degree red hot spots show fluctuations that later “seeded” galaxies ...
... with wimpering fluctuations of only 1/100,000 of a degree red hot spots show fluctuations that later “seeded” galaxies ...
Problem Set 3 Solutions Problem 1: D
... Both clouds must be at their respective p Jeans lengths in order to just barely be able to collapse. The Jeans length goes as λJ ∝ T /ρ, so if they are the same temperature, then the cloud with the shorter √ Jeans length has a higher density. This cloud also has a shorter ...
... Both clouds must be at their respective p Jeans lengths in order to just barely be able to collapse. The Jeans length goes as λJ ∝ T /ρ, so if they are the same temperature, then the cloud with the shorter √ Jeans length has a higher density. This cloud also has a shorter ...
Flatness problem
The flatness problem (also known as the oldness problem) is a cosmological fine-tuning problem within the Big Bang model of the universe. Such problems arise from the observation that some of the initial conditions of the universe appear to be fine-tuned to very 'special' values, and that a small deviation from these values would have had massive effects on the nature of the universe at the current time.In the case of the flatness problem, the parameter which appears fine-tuned is the density of matter and energy in the universe. This value affects the curvature of space-time, with a very specific critical value being required for a flat universe. The current density of the universe is observed to be very close to this critical value. Since the total density departs rapidly from the critical value over cosmic time, the early universe must have had a density even closer to the critical density, departing from it by one part in 1062 or less. This leads cosmologists to question how the initial density came to be so closely fine-tuned to this 'special' value.The problem was first mentioned by Robert Dicke in 1969. The most commonly accepted solution among cosmologists is cosmic inflation, the idea that the universe went through a brief period of extremely rapid expansion in the first fraction of a second after the Big Bang; along with the monopole problem and the horizon problem, the flatness problem is one of the three primary motivations for inflationary theory.