lecture20
... Question: What is changed, when a light wave enters into a medium of different optical density? A) its speed and frequency B) its speed and wavelength C) its frequency and wavelength D) its speed, frequency & wavelength ...
... Question: What is changed, when a light wave enters into a medium of different optical density? A) its speed and frequency B) its speed and wavelength C) its frequency and wavelength D) its speed, frequency & wavelength ...
10.2 Galaxies
... • In 1925, Hubble identified the first galaxy besides the Milky Way, the Andromeda galaxy, our nearest neighbor galaxy. Since that time 125 billion galaxies have been identified. ...
... • In 1925, Hubble identified the first galaxy besides the Milky Way, the Andromeda galaxy, our nearest neighbor galaxy. Since that time 125 billion galaxies have been identified. ...
Classifying Stellar Spectra
... class of a star tells us the star's surface temperature. In this activity, you will take part in a project called Stellar Classification Online Public Exploration (SCOPE). Follow the directions below to take part in the project: 1. Open a browser and go to: scope.pari.edu 2. At the top of the page, ...
... class of a star tells us the star's surface temperature. In this activity, you will take part in a project called Stellar Classification Online Public Exploration (SCOPE). Follow the directions below to take part in the project: 1. Open a browser and go to: scope.pari.edu 2. At the top of the page, ...
superflares on Sun-like stars
... Many stars show flares similar to solar flares, and often such stellar flares are much more energetic than solar flares. The total energy of a solar flare is typically 1029 –1032 erg. There are much more energetic flares (1033 –1038 erg) in stars, especially in young stars with rapid rotation. These ...
... Many stars show flares similar to solar flares, and often such stellar flares are much more energetic than solar flares. The total energy of a solar flare is typically 1029 –1032 erg. There are much more energetic flares (1033 –1038 erg) in stars, especially in young stars with rapid rotation. These ...
Yes, we are all star dust. Even Gary!
... Hertzprung-Russell Diagram (ie like our Sun). Core condenses and outer layers expand to a giant star, possible nebula, ending as white dwarf. 1.4 – 8.0 = much faster version of above, core includes iron and implodes, which is followed by a large rebound explosion ...
... Hertzprung-Russell Diagram (ie like our Sun). Core condenses and outer layers expand to a giant star, possible nebula, ending as white dwarf. 1.4 – 8.0 = much faster version of above, core includes iron and implodes, which is followed by a large rebound explosion ...
A brief history of cosmology Early ideas: astronomy
... Number of stars in this shell is 4πr2n dr, where n is number density of stars Light from each star is L/4πr2, therefore light from shell is nL dr, independent of r therefore, in infinite universe, night sky should be infinitely bright (or at least as bright as typical stellar surface – stars t ...
... Number of stars in this shell is 4πr2n dr, where n is number density of stars Light from each star is L/4πr2, therefore light from shell is nL dr, independent of r therefore, in infinite universe, night sky should be infinitely bright (or at least as bright as typical stellar surface – stars t ...
Hubblecast Episode 64: It All Ends with a Bang! — The incineration of
... with the death of a giant star in the Large Magellanic Cloud. The light from the initial blast first reached Earth in 1987, a few years before Hubble’s launch. But Hubble’s images of the evolving ...
... with the death of a giant star in the Large Magellanic Cloud. The light from the initial blast first reached Earth in 1987, a few years before Hubble’s launch. But Hubble’s images of the evolving ...
Unlocking galaxy formation histories with SAMI
... - Spatially resolved spectra of many galaxies - Or a very large aperture to obtain high S/N spectra of low-mass galaxies ...
... - Spatially resolved spectra of many galaxies - Or a very large aperture to obtain high S/N spectra of low-mass galaxies ...
Constellations
... • Constellations change are unchanging year after year. – Change over thousands of years is proper motion ...
... • Constellations change are unchanging year after year. – Change over thousands of years is proper motion ...
Spectrometry 1 R
... • As for energy: the light with the highest energy will be the one with the highest frequency - that will be the one with the smallest wavelength. • Light of each color has a different wavelength - blue light has a shorter wavelength than red light. Blue light therefore has a larger number of peaks ...
... • As for energy: the light with the highest energy will be the one with the highest frequency - that will be the one with the smallest wavelength. • Light of each color has a different wavelength - blue light has a shorter wavelength than red light. Blue light therefore has a larger number of peaks ...
122final10
... it will decrease in temperature since its no longer burning hydrogen it will explode none of the above; nothing will happen to the core at all ...
... it will decrease in temperature since its no longer burning hydrogen it will explode none of the above; nothing will happen to the core at all ...
RFS_multiple_choice_Dec8_Key
... A. Messier objects: astronomical objects catalogued by Charles Messier B. They are all objects for which the first detailed study was carried out by the Mauna Kea Observatory in Hawaii C. Objects which lie within 5 degrees on either side of the ecliptic, and are hence occulted by the moon at some ti ...
... A. Messier objects: astronomical objects catalogued by Charles Messier B. They are all objects for which the first detailed study was carried out by the Mauna Kea Observatory in Hawaii C. Objects which lie within 5 degrees on either side of the ecliptic, and are hence occulted by the moon at some ti ...
7 - Great Balls of Fire exhibit
... o A star is much bigger and more massive. o A star shines with its own light; a planet reflects light from a star. o Planets orbit around stars. What is the difference between our Solar System and a galaxy? Our Solar System has a star at its center called the Sun. There are eight planets that orbit ...
... o A star is much bigger and more massive. o A star shines with its own light; a planet reflects light from a star. o Planets orbit around stars. What is the difference between our Solar System and a galaxy? Our Solar System has a star at its center called the Sun. There are eight planets that orbit ...
The Big Bang
... What will a star that’s 1,000 times as massive as the sun ultimately become A. A white dwarf B. A planetary nebula C. A black hole Objects, such as stars, moving away from an observer A. do not display a color shift. B. display a blue shift. C. display a red shift. ...
... What will a star that’s 1,000 times as massive as the sun ultimately become A. A white dwarf B. A planetary nebula C. A black hole Objects, such as stars, moving away from an observer A. do not display a color shift. B. display a blue shift. C. display a red shift. ...
The Universe - Solon City Schools
... Star that are less than 1.4 solar masses will use up all of its hydrogen and helium and become a white dwarf. Stars that are between 1.4-3.0 solar masses will produce a Type I supernova, leaving a neutron star. Stars that are greater than 3.0 solar masses produce a Type II supernova, collapsing and ...
... Star that are less than 1.4 solar masses will use up all of its hydrogen and helium and become a white dwarf. Stars that are between 1.4-3.0 solar masses will produce a Type I supernova, leaving a neutron star. Stars that are greater than 3.0 solar masses produce a Type II supernova, collapsing and ...
IR Spectroscopy
... F(l) : observed flux density from the galaxy 1st term : arises from the narrowing of the filter passband in the restframe of the galaxy by a factor (1+z) 2nd term : allows for the fact that radiation seen by the observer at ...
... F(l) : observed flux density from the galaxy 1st term : arises from the narrowing of the filter passband in the restframe of the galaxy by a factor (1+z) 2nd term : allows for the fact that radiation seen by the observer at ...
Chapter 14
... explosion releases a flood of neutrons, which bombard medium weight nuclei and build them up to more massive nuclei, all the way from iron up to uranium. These elements are then spread into space as dust which became the materials of which planets were made. • The force of gravitational attraction p ...
... explosion releases a flood of neutrons, which bombard medium weight nuclei and build them up to more massive nuclei, all the way from iron up to uranium. These elements are then spread into space as dust which became the materials of which planets were made. • The force of gravitational attraction p ...
Chemistry 1000 Lecture 6: Quantum mechanics and spectroscopy
... Chemistry 1000 Lecture 6: Quantum mechanics and spectroscopy Marc R. Roussel ...
... Chemistry 1000 Lecture 6: Quantum mechanics and spectroscopy Marc R. Roussel ...
Liad Elmelech 7.1-7.3 The Nature of Light, Atomic Spectroscopy
... binding energy(φ) • hv = φ • Low frequency light does not eject electrons because no single photon has enough energy to dislodge • Energy of a photon that is beyond what is needed to dislodge an electron is transferred to the electron in the form of kinetic energy • KE = hv – φ ...
... binding energy(φ) • hv = φ • Low frequency light does not eject electrons because no single photon has enough energy to dislodge • Energy of a photon that is beyond what is needed to dislodge an electron is transferred to the electron in the form of kinetic energy • KE = hv – φ ...
Not a limitation
... (singularity) that “blew up” and is still moving outwards today • Not really an explosion, so much as a very rapid expansion…like blowing up a balloon • About 13.7 billion years ago • Microwave radiation detected in the 1960’s supports this theory. It’s left over energy from the Big Bang ...
... (singularity) that “blew up” and is still moving outwards today • Not really an explosion, so much as a very rapid expansion…like blowing up a balloon • About 13.7 billion years ago • Microwave radiation detected in the 1960’s supports this theory. It’s left over energy from the Big Bang ...
Astronomy Learning Objectives and Study Questions for Chapter 12
... 5. At the end of its main-sequence life, H-fusion in a medium mass star like Sol will shift to a shell outside the core and the star will become a _____. A. red dwarf B. red giant C. white dwarf D. blue-white supergiant E. supernova 6. The period during which an RR Lyrae or Cepheid variable star bri ...
... 5. At the end of its main-sequence life, H-fusion in a medium mass star like Sol will shift to a shell outside the core and the star will become a _____. A. red dwarf B. red giant C. white dwarf D. blue-white supergiant E. supernova 6. The period during which an RR Lyrae or Cepheid variable star bri ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.