Chapter 12
... longer by ~1 second/century and the distance between the Earth and Moon is increasing. There is evidence for this in the fossil record on Earth ...
... longer by ~1 second/century and the distance between the Earth and Moon is increasing. There is evidence for this in the fossil record on Earth ...
Astronomy
... Learning Target: Be able to explain what causes various types of stellar explosions Question of the day: Once you have your test back, use your book, notes and each other to correctly describe star formation, using terms such as nuclear fusion, protostar, Ttauri star, interstellar cloud, fragmenting ...
... Learning Target: Be able to explain what causes various types of stellar explosions Question of the day: Once you have your test back, use your book, notes and each other to correctly describe star formation, using terms such as nuclear fusion, protostar, Ttauri star, interstellar cloud, fragmenting ...
Black Holes - WordPress.com
... • How small an object must become before its escape velocity exceeds the speed of light. Sun: 3 km Earth: 0.9 cm (1/3 of an inch) A human: 10-23m (10,000,000 times smaller than a proton) ...
... • How small an object must become before its escape velocity exceeds the speed of light. Sun: 3 km Earth: 0.9 cm (1/3 of an inch) A human: 10-23m (10,000,000 times smaller than a proton) ...
Effect of the symmetry energy on gravitational waves from axial
... Axial w-mode: not accompanied by any matter motions ...
... Axial w-mode: not accompanied by any matter motions ...
Black Holes
... Gravity varies from location to location on the Earth! • Varies inversely with the square of distance from the center of the Earth (objects weigh slightly less at higher altitudes than at sea level) (goes as r2) • Varies with latitude (Earth is not precisely spherical; is flattened at the poles) ...
... Gravity varies from location to location on the Earth! • Varies inversely with the square of distance from the center of the Earth (objects weigh slightly less at higher altitudes than at sea level) (goes as r2) • Varies with latitude (Earth is not precisely spherical; is flattened at the poles) ...
Slides - Events - Tata Institute of Fundamental Research
... gravitational effects on dynamics. (any claim to the contrary remains unproven!) 3) Direct experiments show that light behave exactly like sound for relative velocity. 4) The equivalent of an Ampere experiment on current-current interaction in gravity shows easily the action of cosmic matter (relati ...
... gravitational effects on dynamics. (any claim to the contrary remains unproven!) 3) Direct experiments show that light behave exactly like sound for relative velocity. 4) The equivalent of an Ampere experiment on current-current interaction in gravity shows easily the action of cosmic matter (relati ...
Astronomy Learning Objectives and Study Questions for Chapter 13
... 4. Describe what spectral observation distinguishes a Type Ia from a Type II supernova, and briefly explain why the spectra of these objects are different. 5. Draw a neat, well labeled sketch of a rotating neutron star and explain how this object might be seen as a "pulsar". 6. Briefly describe the ...
... 4. Describe what spectral observation distinguishes a Type Ia from a Type II supernova, and briefly explain why the spectra of these objects are different. 5. Draw a neat, well labeled sketch of a rotating neutron star and explain how this object might be seen as a "pulsar". 6. Briefly describe the ...
Special relativity Before discussing some of the history and results of
... for successful tests of special relativity, but suffice it to say that not a single failure has ever been established. General relativity Einstein wasn’t finished, though. Special relativity only dealt with frames of reference that moved by each other at constant speed. In November of 1915 he came u ...
... for successful tests of special relativity, but suffice it to say that not a single failure has ever been established. General relativity Einstein wasn’t finished, though. Special relativity only dealt with frames of reference that moved by each other at constant speed. In November of 1915 he came u ...
How to Detect Black Holes
... stated that a cluster of neutron stars would have similar effects on their neighbors (the accretion disk and resulting X-ray emission, for example). Another said that it was a cluster of smaller black holes as opposed to one large one. And a third stated that SgrA* is a large mass of heavy neutrinos ...
... stated that a cluster of neutron stars would have similar effects on their neighbors (the accretion disk and resulting X-ray emission, for example). Another said that it was a cluster of smaller black holes as opposed to one large one. And a third stated that SgrA* is a large mass of heavy neutrinos ...
Gravitation
... The largest known asteroid in the solar system is Ceres, which is located in an orbit between Mars and Jupiter. Although the existence of Ceres has been known for two hundred years, its mass is still not well determined. Suppose the magnitude of the gravitational force between the sun and Ceres equa ...
... The largest known asteroid in the solar system is Ceres, which is located in an orbit between Mars and Jupiter. Although the existence of Ceres has been known for two hundred years, its mass is still not well determined. Suppose the magnitude of the gravitational force between the sun and Ceres equa ...
Supernovas Neutron Stars and Black Holes
... Because it is rotating we can measure the radii and speed of its constituents, and hence “weigh” the object at its centre. This object is about as large as our solar system, but weighs 1,200,000,000 times as much as our sun. This means that gravity is about one million times as strong as on the sun. ...
... Because it is rotating we can measure the radii and speed of its constituents, and hence “weigh” the object at its centre. This object is about as large as our solar system, but weighs 1,200,000,000 times as much as our sun. This means that gravity is about one million times as strong as on the sun. ...
BINARY STARS
... Binary Pulsar and Gravitational Waves An even more exciting discovery followed. After a long time of observation, Hulse and Taylor found that both the radius and orbital period of the binary system were decreasing and the speed of rotation was increasing. They associated this observation with the en ...
... Binary Pulsar and Gravitational Waves An even more exciting discovery followed. After a long time of observation, Hulse and Taylor found that both the radius and orbital period of the binary system were decreasing and the speed of rotation was increasing. They associated this observation with the en ...
Gravity - PhysicsAPB
... Find the gravitational attraction between an electron and a proton in a hydrogen atom ( r = 10-6 m ). ...
... Find the gravitational attraction between an electron and a proton in a hydrogen atom ( r = 10-6 m ). ...
A black hole
... The black hole at the center of our galaxy The center of our own galaxy contains a black hole of about 4 million solar masses . The mass is determined from the speed and distance of nearby stars that orbit the black hole like the planets orbiting Earth. A large central mass requires high speed for ...
... The black hole at the center of our galaxy The center of our own galaxy contains a black hole of about 4 million solar masses . The mass is determined from the speed and distance of nearby stars that orbit the black hole like the planets orbiting Earth. A large central mass requires high speed for ...
Lec10
... Falling into a black hole • Signals sent from the freely falling observer would be time dilated and redshifted. • Once inside the event horizon, no communication with the universe outside the event horizon is possible. • But incoming signals from external world can enter. • Time travel and other fa ...
... Falling into a black hole • Signals sent from the freely falling observer would be time dilated and redshifted. • Once inside the event horizon, no communication with the universe outside the event horizon is possible. • But incoming signals from external world can enter. • Time travel and other fa ...
lecture4-Golem
... date back to the Sixties, when the American physicist J. Weber built a series of gravitational antennas and recorded the presence of signals that he explained as gravitational pulses. The experiment used cylindrical bars, a few tons of mass, operating at room temperature and whose vibrations were de ...
... date back to the Sixties, when the American physicist J. Weber built a series of gravitational antennas and recorded the presence of signals that he explained as gravitational pulses. The experiment used cylindrical bars, a few tons of mass, operating at room temperature and whose vibrations were de ...