Document
... • The speed of light in a vacuum, c = 300,000 km/s, is the same no matter how fast an observer moves with respect to the source of the light (special relativity). – As a consequence, time appears dilated and lengths seem to suffer (Lorentz) contraction for moving objects. – As a further consequence, ...
... • The speed of light in a vacuum, c = 300,000 km/s, is the same no matter how fast an observer moves with respect to the source of the light (special relativity). – As a consequence, time appears dilated and lengths seem to suffer (Lorentz) contraction for moving objects. – As a further consequence, ...
Doppler Effect
... • Examples: star approaches an observer so its light appears at higher frequency (blue shift). • Examples: Galaxies are accelerating away from observer so their light appears at lower frequencies (red shift). • Examples: Police use radar gun (radio waves) to monitor speed of cars and trucks. ...
... • Examples: star approaches an observer so its light appears at higher frequency (blue shift). • Examples: Galaxies are accelerating away from observer so their light appears at lower frequencies (red shift). • Examples: Police use radar gun (radio waves) to monitor speed of cars and trucks. ...
Stellar Remnants White Dwarfs Neutron Stars
... it forms a singularity – a small region in space with small volume and the mass of the parent material. A singularity has infinite density; nothing can escape, not even light! ...
... it forms a singularity – a small region in space with small volume and the mass of the parent material. A singularity has infinite density; nothing can escape, not even light! ...
Looking for the siblings of the Sun
... cannot be very dense. -Presence of radioactive-isotopes in primitive meteorites, the Sun was polluted by a SN of star about 15-25 solar masses within a distance of 0.02-1.6 pc (Looney et al. 2006). - Star cluster where the Sun was born: M ~ 500-3000 ...
... cannot be very dense. -Presence of radioactive-isotopes in primitive meteorites, the Sun was polluted by a SN of star about 15-25 solar masses within a distance of 0.02-1.6 pc (Looney et al. 2006). - Star cluster where the Sun was born: M ~ 500-3000 ...
M - ASTRONOMY GROUP – University of St Andrews
... m ! M = 5log10 (d / pc) ! 5 M = m for d = 10 pc If we had lightbulbs of known wattage ( blue=500W, green=250W, red=100W ) we could measure a flux and find the distance. • Astronomy: We need sources with known luminosity ...
... m ! M = 5log10 (d / pc) ! 5 M = m for d = 10 pc If we had lightbulbs of known wattage ( blue=500W, green=250W, red=100W ) we could measure a flux and find the distance. • Astronomy: We need sources with known luminosity ...
Open access
... Fourth, high-magnification events provide a chance to spectroscopically study remote Galactic bulge stars. Most stars in the Galactic bulge are too faint for spectroscopic observations even with large telescopes. However, enhanced brightness of lensed stars of high-magnification events allows spectr ...
... Fourth, high-magnification events provide a chance to spectroscopically study remote Galactic bulge stars. Most stars in the Galactic bulge are too faint for spectroscopic observations even with large telescopes. However, enhanced brightness of lensed stars of high-magnification events allows spectr ...
IFU observations of the high-z Universe
... route to observationally constrain feedback • Based on Adelberger et al (2003) who find that the mean transmission increases close to a QSO – This result is derived from 3 Ly- sources only ...
... route to observationally constrain feedback • Based on Adelberger et al (2003) who find that the mean transmission increases close to a QSO – This result is derived from 3 Ly- sources only ...
Observation
... (on the CGRO, launched in 1991) BeppoSAX (launched in 1996/4/30)– provide a much more accurate location HETE– failed in 1996 ...
... (on the CGRO, launched in 1991) BeppoSAX (launched in 1996/4/30)– provide a much more accurate location HETE– failed in 1996 ...
Chapter 35.
... Summary of Geometric Optics Rules 1. Object distances, p are always positive (except in the case of more than one lens or mirror when the first image is on the far side of the second lens or other cases where you have a virtual object like object behind mirror). 2. Image distances, q, are positive ...
... Summary of Geometric Optics Rules 1. Object distances, p are always positive (except in the case of more than one lens or mirror when the first image is on the far side of the second lens or other cases where you have a virtual object like object behind mirror). 2. Image distances, q, are positive ...
2.5.2 development of a star
... If the star is bigger the core temperature is higher and this means that there is more energy to fuse heavier elements (Be and C). As fusion continues in the core, the temperature keeps rising which enables the creation of even heavier elements in shells. The most massive stars are capable of f ...
... If the star is bigger the core temperature is higher and this means that there is more energy to fuse heavier elements (Be and C). As fusion continues in the core, the temperature keeps rising which enables the creation of even heavier elements in shells. The most massive stars are capable of f ...
Physics 235 Chapter 5 Gravitation
... always attractive, and directed along the line connection the two particles. F = −G ...
... always attractive, and directed along the line connection the two particles. F = −G ...
Which diagram is most likely to have the highest tide
... A bowling ball, a baseball, and a tennis ball are all initially pushed with the same amount of force.Which object will move faster with this amount of force? a) All three balls will move at the c) baseball same time. b) bowling ball d) tennis ball Suppose you are riding on a bicycle and it stops sud ...
... A bowling ball, a baseball, and a tennis ball are all initially pushed with the same amount of force.Which object will move faster with this amount of force? a) All three balls will move at the c) baseball same time. b) bowling ball d) tennis ball Suppose you are riding on a bicycle and it stops sud ...
Astrophysics - Mr Priest`s Physics Notes
... Angle is the angle between the rays coming from different points on the distant object (for example, the edges of the Moon) as they enter the telescope objective lens or the unaided eye. Angle is the angle between the same rays as they enter the eye after passing through the telescope. Angular m ...
... Angle is the angle between the rays coming from different points on the distant object (for example, the edges of the Moon) as they enter the telescope objective lens or the unaided eye. Angle is the angle between the same rays as they enter the eye after passing through the telescope. Angular m ...
Doomed, Insignificant, and Ignorant
... driven to the Big Chill by Dark Energy, the matter in the Universe is dominated by Dark Matter, and we are basically ignorant about 96% of the Universe or perhaps we are wrong about how gravity works. • There are huge on-going and planned efforts to understand. ...
... driven to the Big Chill by Dark Energy, the matter in the Universe is dominated by Dark Matter, and we are basically ignorant about 96% of the Universe or perhaps we are wrong about how gravity works. • There are huge on-going and planned efforts to understand. ...
Ppt10 Geometric Optics
... The speed of light c in a material is generally less than the free-space velocity of 3 x108 m/s. In water light travels about three-fourths of its velocity in air. Light travels about two-thirds as fast in glass. The ratio of the velocity c of light in a vacuum to the velocity v of light in a part ...
... The speed of light c in a material is generally less than the free-space velocity of 3 x108 m/s. In water light travels about three-fourths of its velocity in air. Light travels about two-thirds as fast in glass. The ratio of the velocity c of light in a vacuum to the velocity v of light in a part ...
SI Units and Prefixes: the easy way to measure
... We know that the speed of the light stays the same so it must be the wavelength and therefore the frequency that changes. This manifests itself as a change in the color of the light. The change is far too small to be seen with the naked eye, but quite easy to detect using electronic equipment, such ...
... We know that the speed of the light stays the same so it must be the wavelength and therefore the frequency that changes. This manifests itself as a change in the color of the light. The change is far too small to be seen with the naked eye, but quite easy to detect using electronic equipment, such ...
Optics
... 19. A 20 cm long pinhole camera is used to photograph the CN tower. If the actual CN tower is 553 m tall and the image is only 4.7 cm tall, how far away was the photographer from the tower? 20. A concave lens produces a virtual image of a flower petal 2.00 cm from the lens. Determine the magnificati ...
... 19. A 20 cm long pinhole camera is used to photograph the CN tower. If the actual CN tower is 553 m tall and the image is only 4.7 cm tall, how far away was the photographer from the tower? 20. A concave lens produces a virtual image of a flower petal 2.00 cm from the lens. Determine the magnificati ...
Stars!!!!
... • Quasi- stellar objects • They are the most luminous, powerful, and energetic objects known of at this time. They seem to inhabit the centers of active young galaxies and can emit up to a thousand times the energy output of our entire galaxy ...
... • Quasi- stellar objects • They are the most luminous, powerful, and energetic objects known of at this time. They seem to inhabit the centers of active young galaxies and can emit up to a thousand times the energy output of our entire galaxy ...
