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... • Assuming lower life-forms, we cannot expect life to actively produce signals • Look for life on the surface of a rocky ...
... • Assuming lower life-forms, we cannot expect life to actively produce signals • Look for life on the surface of a rocky ...
Mapping the Cosmos Step 1 – The Solar System
... 7. Draw (on the board!) the Galactic halo of dark matter, which has a radius of about 50 kpc, as a circle around the Galaxy figure drawn earlier. (Remember, the scale is 1 cm = 10 kpc, or 1 kpc = 1 mm) 8. Draw dots for the Large and Small Magellenic clouds, the Milky Way's irregular "satellite gala ...
... 7. Draw (on the board!) the Galactic halo of dark matter, which has a radius of about 50 kpc, as a circle around the Galaxy figure drawn earlier. (Remember, the scale is 1 cm = 10 kpc, or 1 kpc = 1 mm) 8. Draw dots for the Large and Small Magellenic clouds, the Milky Way's irregular "satellite gala ...
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... 7. Draw (on the board!) the Galactic halo of dark matter, which has a radius of about 50 kpc, as a circle around the Galaxy figure drawn earlier. (Remember, the scale is 1 cm = 10 kpc, or 1 kpc = 1 mm) 8. Draw dots for the Large and Small Magellenic clouds, the Milky Way's irregular "satellite gala ...
... 7. Draw (on the board!) the Galactic halo of dark matter, which has a radius of about 50 kpc, as a circle around the Galaxy figure drawn earlier. (Remember, the scale is 1 cm = 10 kpc, or 1 kpc = 1 mm) 8. Draw dots for the Large and Small Magellenic clouds, the Milky Way's irregular "satellite gala ...
Photoelectric Effect When light shines on a metal surface, electrons are emitted
... Photoelectric Effect When light shines on a metal surface, electrons are emitted from the surface. ...
... Photoelectric Effect When light shines on a metal surface, electrons are emitted from the surface. ...
The electron! Speed and energy notes
... •His model gave atoms only certain allowable energy states. ...
... •His model gave atoms only certain allowable energy states. ...
Radio Astronomy
... Summary History of Radio Astronomy • Karl Jansky @ Bell Labs was researching noise in “short wave” radio communication. • Aside from thunderstorms, he found (1932) a steady hiss, peaking with sidereal, not solar, time • Localized to Sagittarius (center of galaxy) 20.5 MHz • Grote Reber -- working a ...
... Summary History of Radio Astronomy • Karl Jansky @ Bell Labs was researching noise in “short wave” radio communication. • Aside from thunderstorms, he found (1932) a steady hiss, peaking with sidereal, not solar, time • Localized to Sagittarius (center of galaxy) 20.5 MHz • Grote Reber -- working a ...
Finding Black Holes
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
Finding Black Holes Left Behind by Single Stars
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
Topic 5 Core Questions
... Distance / time and frequency x wavelength. Substitute in values in standard units, show working out clearly and show the units on the answer. Triangles are a tool to help us re-arrange equations. Suspend the steel rod and hit it with a hammer. Use a frequency app to record the peak frequency (or a ...
... Distance / time and frequency x wavelength. Substitute in values in standard units, show working out clearly and show the units on the answer. Triangles are a tool to help us re-arrange equations. Suspend the steel rod and hit it with a hammer. Use a frequency app to record the peak frequency (or a ...
Sunlight-Ihi Kōmaru
... Spin a model of Earth to see how the tilt in Earth’s axis causes changes in climate as the Earth orbits the Sun. THE ELECTROMAGNETIC SPECTRUM The full spectrum of sunlight includes visible light, Radio waves, X-rays and more. Humans have found many technological uses for each part of the spectrum. E ...
... Spin a model of Earth to see how the tilt in Earth’s axis causes changes in climate as the Earth orbits the Sun. THE ELECTROMAGNETIC SPECTRUM The full spectrum of sunlight includes visible light, Radio waves, X-rays and more. Humans have found many technological uses for each part of the spectrum. E ...
Scientists classify stars by
... Distance makes them look different. The same is true for stars. Two stars could be the same brightness but their distance from us makes their brightness different. ...
... Distance makes them look different. The same is true for stars. Two stars could be the same brightness but their distance from us makes their brightness different. ...
Kroupa - SatelliteGa.. - University of Hertfordshire
... galaxies were created by ancient collisions between young galaxies. Team member and former colleague Dr Manuel Metz, now at the Deutsches Zentrum fuer Luft- and Raumfahrt, also worked on the study. “Fragments from early collisions can form the revolving dwarf galaxies we see today” comments Dr Metz. ...
... galaxies were created by ancient collisions between young galaxies. Team member and former colleague Dr Manuel Metz, now at the Deutsches Zentrum fuer Luft- and Raumfahrt, also worked on the study. “Fragments from early collisions can form the revolving dwarf galaxies we see today” comments Dr Metz. ...
Life Cycle of Stars
... The universe is commonly defined as the totality of everything that exists, including all matter and energy, the planets, stars, galaxies and the contents of intergalactic space. We will begin our study of the universe with stars. When you look up at the night sky you can see many stars. When you lo ...
... The universe is commonly defined as the totality of everything that exists, including all matter and energy, the planets, stars, galaxies and the contents of intergalactic space. We will begin our study of the universe with stars. When you look up at the night sky you can see many stars. When you lo ...
Problem sheet : 1
... 2. Calculate the de Broglie wavelength (in meters) for an electron in n = 2 state of hydrogen atom. 3. Power received by the top of earth’s atmosphere from the sun is 1.4 kW/m2 . Assuming that the earth behaves like a blackbody, find the surface temperature of the earth. (For a hint, see example pro ...
... 2. Calculate the de Broglie wavelength (in meters) for an electron in n = 2 state of hydrogen atom. 3. Power received by the top of earth’s atmosphere from the sun is 1.4 kW/m2 . Assuming that the earth behaves like a blackbody, find the surface temperature of the earth. (For a hint, see example pro ...
Notes
... The generated heat will then exactly match the outgoing energy flow (luminosity) at any point in the star. Heat flows from hot to cold temperature gradient is required to carry the luminosity outward: Therefore T(r) and P(r) drop towards the surface (r) also drops ...
... The generated heat will then exactly match the outgoing energy flow (luminosity) at any point in the star. Heat flows from hot to cold temperature gradient is required to carry the luminosity outward: Therefore T(r) and P(r) drop towards the surface (r) also drops ...
A Solar System - Cloudfront.net
... halo of matter surrounding the central super-massive black hole of a young galaxy. ...
... halo of matter surrounding the central super-massive black hole of a young galaxy. ...
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.