Powerpoint for today
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
Mise en page 1
... Since the axis of the Earth’s rotation goes through the poles, a patient observer at the North Pole will see the stars orbiting anti-clockwise around a point directly above his head, where the Pole Star appears immobile. The orbits of the stars increase with their distance from the Pole Star. This p ...
... Since the axis of the Earth’s rotation goes through the poles, a patient observer at the North Pole will see the stars orbiting anti-clockwise around a point directly above his head, where the Pole Star appears immobile. The orbits of the stars increase with their distance from the Pole Star. This p ...
The Solar System
... an official definition of the term “planet”. The definition said that a planet in our Solar System orbits around the Sun, has a nearly round shape, and does not cross the orbit of another planet. Because Pluto crosses Neptune’s orbit once every 248 years, it is no longer considered a planet. Since t ...
... an official definition of the term “planet”. The definition said that a planet in our Solar System orbits around the Sun, has a nearly round shape, and does not cross the orbit of another planet. Because Pluto crosses Neptune’s orbit once every 248 years, it is no longer considered a planet. Since t ...
Astronomy Puzzle-1
... 8. A medieval time astronomer from Gujarat and worked as a head of the department where astronomy studies were conducted in Sanskrit at Ujjain 9. Measured rotational periods of Jupiter and Mars; discovered four satellites of Saturn and the gap in Saturn’s rings. 10. First to confirm Einstein’s predi ...
... 8. A medieval time astronomer from Gujarat and worked as a head of the department where astronomy studies were conducted in Sanskrit at Ujjain 9. Measured rotational periods of Jupiter and Mars; discovered four satellites of Saturn and the gap in Saturn’s rings. 10. First to confirm Einstein’s predi ...
2014 State Test
... B. Type Ib/c D. Type IIp A8. Is the ring-like structure physically significant or just an optical illusion, and why? A. Optical illusion; a thin shell of gas is less visible towards the center than at the edges B. Optical illusion; the object is rotating so that the center of the image seems empty C ...
... B. Type Ib/c D. Type IIp A8. Is the ring-like structure physically significant or just an optical illusion, and why? A. Optical illusion; a thin shell of gas is less visible towards the center than at the edges B. Optical illusion; the object is rotating so that the center of the image seems empty C ...
Lesson 4. Wiens and Stefans Laws
... Questions 1. The peak intensity of thermal radiation from the Sun is at a wavelength of 500 nm, calculate the surface temperature of the Sun. 2. A star has a power output of 6.0 x 1028 W and a surface temperature of 3400K, calculate its radius and the ratio to the Sun’s radius (rsun = 7 x 108 m) ...
... Questions 1. The peak intensity of thermal radiation from the Sun is at a wavelength of 500 nm, calculate the surface temperature of the Sun. 2. A star has a power output of 6.0 x 1028 W and a surface temperature of 3400K, calculate its radius and the ratio to the Sun’s radius (rsun = 7 x 108 m) ...
Test and answer key
... C Hydrogen and helium became highly compressed by gravity and sank to the core below a layer of heavier rocky material. D All materials were thoroughly mixed by convection in the molten state, and Earth remained mixed as it cooled. 49. Which of the following techniques is used by geologists and geop ...
... C Hydrogen and helium became highly compressed by gravity and sank to the core below a layer of heavier rocky material. D All materials were thoroughly mixed by convection in the molten state, and Earth remained mixed as it cooled. 49. Which of the following techniques is used by geologists and geop ...
cycles
... throughout the year. Each sign is one twelfth of the year. Below it is a map of the zodiacal constellations as they appear in the sky. The ...
... throughout the year. Each sign is one twelfth of the year. Below it is a map of the zodiacal constellations as they appear in the sky. The ...
PC3692: Physics of Stellar Structure (and Evolution)
... right. This sequence is called main sequence. You also see a clump of to the right of the main sequence, these stars are called red clump stars, and the stars further to the right, red giants. You can also vaguely see some stars in the bottom left; these are white dwarf stars, they are hot and very ...
... right. This sequence is called main sequence. You also see a clump of to the right of the main sequence, these stars are called red clump stars, and the stars further to the right, red giants. You can also vaguely see some stars in the bottom left; these are white dwarf stars, they are hot and very ...
Feb 2008 - Amateur Astronomers, Inc.
... larger aperture instruments, culminating in an eight inch equatorially mounted refractor by Grubb of Dublin - the observatory's largest main instrument. Comet C/1881 K1, the Great Comet of 1881 In Tebbutt's astronomical memoirs, he notes his discovery of Comet C/1881 K1: On going out this evening [1 ...
... larger aperture instruments, culminating in an eight inch equatorially mounted refractor by Grubb of Dublin - the observatory's largest main instrument. Comet C/1881 K1, the Great Comet of 1881 In Tebbutt's astronomical memoirs, he notes his discovery of Comet C/1881 K1: On going out this evening [1 ...
In This Issue The Hottest Planet in the Solar System President`s Article
... This one is mildly trickier. The right ascension doesn’t use degrees… it uses hours and minutes, like the time on a clock. The RA “clock” does indeed have 24 “hour” components in it. But the clock is not based on a solar day… instead it is based on a sidereal day. A sidereal (pronounced: sīˈdi(ə)rēə ...
... This one is mildly trickier. The right ascension doesn’t use degrees… it uses hours and minutes, like the time on a clock. The RA “clock” does indeed have 24 “hour” components in it. But the clock is not based on a solar day… instead it is based on a sidereal day. A sidereal (pronounced: sīˈdi(ə)rēə ...
lecture_5_mbu
... In the Sun ~10% of its volume is at the T and required for fusion Total energy available is… – Energy per reaction x (total mass available for fusion / mass in each reaction) = Energy per reaction x (0.1 x mass of Sun / mass of 4 x 11H atoms) (where mass of Sun is 2x1030kg) ...
... In the Sun ~10% of its volume is at the T and required for fusion Total energy available is… – Energy per reaction x (total mass available for fusion / mass in each reaction) = Energy per reaction x (0.1 x mass of Sun / mass of 4 x 11H atoms) (where mass of Sun is 2x1030kg) ...
Binocular Objects (MS Word)
... Sagittarius contains more Messier objects than any other constellation. The best way to identify them is to take them one by one. The beginner will have to be careful not to confuse the various objects. The principal stars of Sagittarius form the famous “Teapot” asterism. The brightest part of the M ...
... Sagittarius contains more Messier objects than any other constellation. The best way to identify them is to take them one by one. The beginner will have to be careful not to confuse the various objects. The principal stars of Sagittarius form the famous “Teapot” asterism. The brightest part of the M ...
Article on Pluto (for 1st science news)
... Samuel Oschin Telescope. Xena is about 2,400 kilometers in diameter. A Kuiper-belt object like Pluto, but slightly less reddish-yellow, Xena is currently visible in the constellation Cetus to anyone with a top-quality amateur telescope. Brown and his colleagues in late September announced that Xena ...
... Samuel Oschin Telescope. Xena is about 2,400 kilometers in diameter. A Kuiper-belt object like Pluto, but slightly less reddish-yellow, Xena is currently visible in the constellation Cetus to anyone with a top-quality amateur telescope. Brown and his colleagues in late September announced that Xena ...
Open Houses at the Campus Observatory Astronomical Horizons Lecture
... Electron degeneracy pressure goes away because electrons combine with protons, making neutrons and neutrinos Neutrons collapse to the center, forming a neutron ...
... Electron degeneracy pressure goes away because electrons combine with protons, making neutrons and neutrinos Neutrons collapse to the center, forming a neutron ...
Unit 3, Prelab Unit 3
... and “b” in Fig. SG 3-2. That is, “2a” is the major axis and “2b” is the minor axis. Another way is to use the semi-major axis and the eccentricity, ε. For planetary motion, the semimajor axis is the time average distance of a planet from the Sun. The eccentricity is a number between 0 and 1 that des ...
... and “b” in Fig. SG 3-2. That is, “2a” is the major axis and “2b” is the minor axis. Another way is to use the semi-major axis and the eccentricity, ε. For planetary motion, the semimajor axis is the time average distance of a planet from the Sun. The eccentricity is a number between 0 and 1 that des ...
Chapter 2: The Science of Life in the Universe
... 52. Two asteroids are found at the same distance from the Sun. However, one asteroid is twice as massive the other. According to Newton's Universal Law of Gravitation the force of gravity exerted by the Sun and the more massive asteroid is A) twice as large as the force exerted on the less massive a ...
... 52. Two asteroids are found at the same distance from the Sun. However, one asteroid is twice as massive the other. According to Newton's Universal Law of Gravitation the force of gravity exerted by the Sun and the more massive asteroid is A) twice as large as the force exerted on the less massive a ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.