Dark Matter - Berkeley Center for Cosmological Physics
... R = radius of the circle (distance from the Earth to the sun) 3) Simulating Gravitational Attraction Activity (see attachment for student handout) Hold the center tube so that the washers hang downwards and the stopper will swing in a horizontal circle when you exert a small force. Keep the stopper ...
... R = radius of the circle (distance from the Earth to the sun) 3) Simulating Gravitational Attraction Activity (see attachment for student handout) Hold the center tube so that the washers hang downwards and the stopper will swing in a horizontal circle when you exert a small force. Keep the stopper ...
The Sun - Tvining.us
... Two mass-1 isotopes of hydrogen undergo a simultaneous fusion and beta decay to produce a positron, a neutrino, and a mass-2 isotope of hydrogen (deuterium). The deuterium reacts with another mass-1 isotope of hydrogen to produce Helium-3 and a gamma-ray. Two helium-3 isotopes produced in separate i ...
... Two mass-1 isotopes of hydrogen undergo a simultaneous fusion and beta decay to produce a positron, a neutrino, and a mass-2 isotope of hydrogen (deuterium). The deuterium reacts with another mass-1 isotope of hydrogen to produce Helium-3 and a gamma-ray. Two helium-3 isotopes produced in separate i ...
Multiple wavelength diffractive imaging - X
... ized to each other and combined so as to retain the highangle scatter from the long exposure data with the nonsaturated data from the short exposure time data; the total exposure time was 59 minutes. The resulting combined experimental diffraction pattern is shown in Fig. 2. The limiting factor in t ...
... ized to each other and combined so as to retain the highangle scatter from the long exposure data with the nonsaturated data from the short exposure time data; the total exposure time was 59 minutes. The resulting combined experimental diffraction pattern is shown in Fig. 2. The limiting factor in t ...
CONSTELLATION TAURUS, THE BULL The Taurus constellation
... of material and is larger than the Orion Nebula. At a distance astronomical its name from its appearance in a drawing made by Irish astronomer Lord of 490 light-years (150 parsecs), this is one of the nearest Rosse in 1844, active star forming regions. AK with Wikipedia Notes ...
... of material and is larger than the Orion Nebula. At a distance astronomical its name from its appearance in a drawing made by Irish astronomer Lord of 490 light-years (150 parsecs), this is one of the nearest Rosse in 1844, active star forming regions. AK with Wikipedia Notes ...
Living with a Red Dwarf - Center for Space and Habitability (CSH)
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
How the Earth Moves Transcript
... stars – in reality the stars are widely separated in their distance away from Earth, and only appear to be close as they lie in the same direction when viewed from our vantage point. However, that wasn’t clear to most ancient civilisation, who (quite reasonably) believed that all the stars were loc ...
... stars – in reality the stars are widely separated in their distance away from Earth, and only appear to be close as they lie in the same direction when viewed from our vantage point. However, that wasn’t clear to most ancient civilisation, who (quite reasonably) believed that all the stars were loc ...
The Story of Gold
... with 700,000 atoms per billion in the Sun and 800,000 per billion as an average over a wide area of the universe. However, compared to the most abundant element, hydrogen at 930,000,000 atoms per billion, gold is still very rare indeed. In general, the heavier the element the less of it there is aro ...
... with 700,000 atoms per billion in the Sun and 800,000 per billion as an average over a wide area of the universe. However, compared to the most abundant element, hydrogen at 930,000,000 atoms per billion, gold is still very rare indeed. In general, the heavier the element the less of it there is aro ...
Chiroptical Spectroscopy - Ruhr
... If angle of incidence ≠ 0°, reflection coefficients are different for waves polarized parallel or perpendicular to plane of incidence. Circular polarization destroyed Intensity of linear polarized light angle dependent ...
... If angle of incidence ≠ 0°, reflection coefficients are different for waves polarized parallel or perpendicular to plane of incidence. Circular polarization destroyed Intensity of linear polarized light angle dependent ...
IR Spectroscopy
... where µ = m1m2/(m1+m2) (termed the 'reduced mass'), and c is the velocity of light. K is a constant that varies from one bond to another. Force constants for triple bonds are three times those of single bonds. Stronger bonds have a large force constant K and vibrate at higher frequencies Bonds b ...
... where µ = m1m2/(m1+m2) (termed the 'reduced mass'), and c is the velocity of light. K is a constant that varies from one bond to another. Force constants for triple bonds are three times those of single bonds. Stronger bonds have a large force constant K and vibrate at higher frequencies Bonds b ...
Pre-Final Quiz Answers
... We can see back in time (and far away) with optical, infrared and radio telescopes to the time, following the "Big Bang" when the Universe first became transparent to light (electromagnetic radiation). We can't see farther or earlier! The Universe at that time is "seen" as the CMB (Cosmic Microwave ...
... We can see back in time (and far away) with optical, infrared and radio telescopes to the time, following the "Big Bang" when the Universe first became transparent to light (electromagnetic radiation). We can't see farther or earlier! The Universe at that time is "seen" as the CMB (Cosmic Microwave ...
expanding universe
... of the solar system with all the planets, including the earth, revolving around it. ...
... of the solar system with all the planets, including the earth, revolving around it. ...
optical pumping of rubidium
... this process is so low that a direct detection is not possible; a higher vapour pressure leads to a broadening of the lines due to collisions. If the HF field were observed directly, the signals would be masked entirely by noise. The process developed by A. Kastler requires that, for every act of in ...
... this process is so low that a direct detection is not possible; a higher vapour pressure leads to a broadening of the lines due to collisions. If the HF field were observed directly, the signals would be masked entirely by noise. The process developed by A. Kastler requires that, for every act of in ...
HR Diagram Explorer
... There is a correlation between a main sequence star's mass and its luminosity. Stars that have higher and are on the main sequence have a greater mass than fainter stars. The mass luminosity relation was discovered by in 1924. It says that the stars luminosity is proportional to the power of its mas ...
... There is a correlation between a main sequence star's mass and its luminosity. Stars that have higher and are on the main sequence have a greater mass than fainter stars. The mass luminosity relation was discovered by in 1924. It says that the stars luminosity is proportional to the power of its mas ...
Chapter 14 Neutron Stars and Black holes
... a. The protons and electrons, being charged particles, are all ejected during the supernova event by the strong magnetic field. b. The electrons and protons combine to form neutrons and ...
... a. The protons and electrons, being charged particles, are all ejected during the supernova event by the strong magnetic field. b. The electrons and protons combine to form neutrons and ...
ppt - Wladimir Lyra
... Evolution of high mass stars (4 < M/M⊙ < 8) The Helium Flash never happens The star reaches Helium burning temperatures before the core becomes degenerate ...
... Evolution of high mass stars (4 < M/M⊙ < 8) The Helium Flash never happens The star reaches Helium burning temperatures before the core becomes degenerate ...
Refraction and Reflection Lab
... high R.I. liquid is used to make an airless contact between the stone and a piece of calcite in the refractometer. The stone is moved along the calcite until a green band is seen. Check out the demonstration stations to see if you can identify the two gemstones. ...
... high R.I. liquid is used to make an airless contact between the stone and a piece of calcite in the refractometer. The stone is moved along the calcite until a green band is seen. Check out the demonstration stations to see if you can identify the two gemstones. ...
SPY — The ESO Supernovae Type Ia Progenitor Survey
... of spectra, which have to be checked for RV variations, a fast and reliable algorithm to measure RV shifts is necessary. We apply a “cross-correlation” routine based on a χ2 test (description in Napiwotzki et al. 2001). The RV shift is evaluated from the minimum χ2. Error margins can be estimated fr ...
... of spectra, which have to be checked for RV variations, a fast and reliable algorithm to measure RV shifts is necessary. We apply a “cross-correlation” routine based on a χ2 test (description in Napiwotzki et al. 2001). The RV shift is evaluated from the minimum χ2. Error margins can be estimated fr ...
Lecture7
... eventually end up as white dwarfs. However, before the degeneracy sets in finally in the core, elements heavier than C and O would be synthesized. So, their core will consist of elements heavier than C and O, e.g., Mg, Si, but not Fe. However, some calculations show that some of these stars on the h ...
... eventually end up as white dwarfs. However, before the degeneracy sets in finally in the core, elements heavier than C and O would be synthesized. So, their core will consist of elements heavier than C and O, e.g., Mg, Si, but not Fe. However, some calculations show that some of these stars on the h ...
Measuring The Parallax of Barnard's Star
... to worry about the fact that at low altitude stars of different colors are refracted differently by the atmosphere. I had taken the images using a broad-band luminance filter and so this refraction issue could be a problem especially given that the sixth image was acquired when Barnard’s star was so ...
... to worry about the fact that at low altitude stars of different colors are refracted differently by the atmosphere. I had taken the images using a broad-band luminance filter and so this refraction issue could be a problem especially given that the sixth image was acquired when Barnard’s star was so ...
Field Star Distributions of the Hercules Thick Disk Cloud
... about the l=0 line of symmetry. In Figure 9 presents the calculation for two fields where the excess was not seen and Figure 10 presents the excess for two fields with the excess. While no difference is seen in the distribution of Figure 9, Figure 10 shows the Q1 line of sight has more stars between ...
... about the l=0 line of symmetry. In Figure 9 presents the calculation for two fields where the excess was not seen and Figure 10 presents the excess for two fields with the excess. While no difference is seen in the distribution of Figure 9, Figure 10 shows the Q1 line of sight has more stars between ...
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.