Youngs Double Slit
... Bring the slit up close to the eye and view the light source. What do you see? The interference pattern can only occur when the light diffracted by the two slits is coherent or in phase with each other. Coherence can be achieved with a laser, however Thomas Young performed this experiment in 1801 an ...
... Bring the slit up close to the eye and view the light source. What do you see? The interference pattern can only occur when the light diffracted by the two slits is coherent or in phase with each other. Coherence can be achieved with a laser, however Thomas Young performed this experiment in 1801 an ...
The two states of matter they didn`t teach you about in school… Until
... Stars make up 99% of the total matter in the Universe. Therefore, 99% of everything that exists in the entire Universe is in the plasma state. ...
... Stars make up 99% of the total matter in the Universe. Therefore, 99% of everything that exists in the entire Universe is in the plasma state. ...
Telescópios
... The Very Large Telescope array (VLT) is the flagship facility for European ground-based astronomy at the beginning of the third Millennium. It is the world's most advanced optical instrument, consisting of four Unit Telescopes with main mirrors of 8.2m diameter and four movable 1.8m diamete ...
... The Very Large Telescope array (VLT) is the flagship facility for European ground-based astronomy at the beginning of the third Millennium. It is the world's most advanced optical instrument, consisting of four Unit Telescopes with main mirrors of 8.2m diameter and four movable 1.8m diamete ...
The two states of matter they didn’t teach you about in
... Stars make up 99% of the total matter in the Universe. Therefore, 99% of everything that exists in the entire Universe is in the plasma state. ...
... Stars make up 99% of the total matter in the Universe. Therefore, 99% of everything that exists in the entire Universe is in the plasma state. ...
Broadband Semiconductor Light Source for Optical Sensing
... in Fig. 4. With the same device length (1.5 mm), the device A demonstrates 1.4 times in spectrum and 1.65 times in output with respect to the characteristics shown in Fig. 1. The device B (device length 1.0 mm × 3 areas) demonstrates 155 nm, which is 1.9 times in spectrum, even though the output pow ...
... in Fig. 4. With the same device length (1.5 mm), the device A demonstrates 1.4 times in spectrum and 1.65 times in output with respect to the characteristics shown in Fig. 1. The device B (device length 1.0 mm × 3 areas) demonstrates 155 nm, which is 1.9 times in spectrum, even though the output pow ...
The Peculiar Physics of Line-Driving
... * Massive, hot, luminous stars have strong stellar winds * Driven by line-scattering of stellar radiation * Highly unstable, leading to: - high speed rarefactions ...
... * Massive, hot, luminous stars have strong stellar winds * Driven by line-scattering of stellar radiation * Highly unstable, leading to: - high speed rarefactions ...
Volume 4 (Issue 3), March 2015
... photograph – the earliest really good picture, of an Andromedid, was taken by L. Weinek, from Prague, as long ago as 27 November 1885 – but meteor spectra are much more difficult, because one never knows Page no. 02 ...
... photograph – the earliest really good picture, of an Andromedid, was taken by L. Weinek, from Prague, as long ago as 27 November 1885 – but meteor spectra are much more difficult, because one never knows Page no. 02 ...
The HR Diagram - Faculty Web Pages
... brightnesses. Now let's see if we can find some relationships between these stellar properties. We know that hotter stars are brighter, as described by the Stefan-Boltzmann Law, and we know that the hotter stars are also bluer, as described by Wien's Law. The H-R diagram is a way of displaying an im ...
... brightnesses. Now let's see if we can find some relationships between these stellar properties. We know that hotter stars are brighter, as described by the Stefan-Boltzmann Law, and we know that the hotter stars are also bluer, as described by Wien's Law. The H-R diagram is a way of displaying an im ...
Climbing the Cosmic Distance Ladder: How Astronomers Measure
... Distance with the Inverse‐Square Law ...
... Distance with the Inverse‐Square Law ...
The Origin of the Elements edited by David L. Alles Western Washington University
... The Sun generates all of its heat in its core. This heat both warms the Earth and prevents gravity from forcing the Sun to undergo a catastrophic gravitational collapse. The fuel which supplies the heat is hydrogen. Hydrogen nuclei are converted to helium as heat is released. Five billion years from ...
... The Sun generates all of its heat in its core. This heat both warms the Earth and prevents gravity from forcing the Sun to undergo a catastrophic gravitational collapse. The fuel which supplies the heat is hydrogen. Hydrogen nuclei are converted to helium as heat is released. Five billion years from ...
Atomic quantum and nuclear
... have the same speed because of the difference in their masses. For the same reason, remembering that KE = p2/2m, they cannot have the same kinetic energy. Because the kinetic energy is the only type of energy an isolated particle can have, and we have argued that the particles have different energie ...
... have the same speed because of the difference in their masses. For the same reason, remembering that KE = p2/2m, they cannot have the same kinetic energy. Because the kinetic energy is the only type of energy an isolated particle can have, and we have argued that the particles have different energie ...
Measuring the Rotational Speed of Spiral Galaxies and
... where Vrotation is the rotation velocity, VLOS is the velocity you determined from the Doppler shift, Vrecession is how fast the galaxy is moving away from us, and sin(i) is the sine of the inclination angle i of the galaxy. The inclination angle is a measure of how close to edge-on you are viewing ...
... where Vrotation is the rotation velocity, VLOS is the velocity you determined from the Doppler shift, Vrecession is how fast the galaxy is moving away from us, and sin(i) is the sine of the inclination angle i of the galaxy. The inclination angle is a measure of how close to edge-on you are viewing ...
chapter 7
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitationally interactions with their stars. However, te ...
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitationally interactions with their stars. However, te ...
Document
... Possible solutions to the Fermi paradox 2. Low probability of intelligent life • Life seems to appear quite easily in favorable conditions • But maybe it needs very special conditions for intelligence to emerge (= to become an asset in natural selection) • On Earth, it took more than 2 billion years ...
... Possible solutions to the Fermi paradox 2. Low probability of intelligent life • Life seems to appear quite easily in favorable conditions • But maybe it needs very special conditions for intelligence to emerge (= to become an asset in natural selection) • On Earth, it took more than 2 billion years ...
Low mass star formation
... Protostellar luminosity function inconsistent with observations unless accretion is either slow or episodic ...
... Protostellar luminosity function inconsistent with observations unless accretion is either slow or episodic ...
General relativistic spectra of accretion discs around rapidly
... result, the plotted spectra for these two cases lie almost on top of each other. However, for i ¼ 08 the flux corresponding to the massshed configuration is slightly higher than that for V ¼ 0, while the case is opposite at higher inclinations. This is a result of the inclination dependence of the ð ...
... result, the plotted spectra for these two cases lie almost on top of each other. However, for i ¼ 08 the flux corresponding to the massshed configuration is slightly higher than that for V ¼ 0, while the case is opposite at higher inclinations. This is a result of the inclination dependence of the ð ...
Contents - Beck-Shop
... What If Kaguya-hime Came from a Planet in Our Solar System? . . . . . . . . . . . . . . . . . . . . . . . . 80 Kaguya-hime and the Solar System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Mercury . . . . . . . . . . . . . . . . . . . . . . . . . ...
... What If Kaguya-hime Came from a Planet in Our Solar System? . . . . . . . . . . . . . . . . . . . . . . . . 80 Kaguya-hime and the Solar System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Mercury . . . . . . . . . . . . . . . . . . . . . . . . . ...
Contents - No Starch Press
... What If Kaguya-hime Came from a Planet in Our Solar System? . . . . . . . . . . . . . . . . . . . . . . . . 80 Kaguya-hime and the Solar System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... What If Kaguya-hime Came from a Planet in Our Solar System? . . . . . . . . . . . . . . . . . . . . . . . . 80 Kaguya-hime and the Solar System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
3. Measuring Distances and Magnitudes
... Telescope) have improved parallax accuracy to 0.001” within a few years. Prior to 1990, less than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the European Space Agency with the Hipparcos mission (1989 ...
... Telescope) have improved parallax accuracy to 0.001” within a few years. Prior to 1990, less than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the European Space Agency with the Hipparcos mission (1989 ...
Using the D810A DSLR for Deep Space Astrophotography
... H-alpha is a narrowband spectral emission best viewable when other wavelengths of light are reduced or eliminated. ...
... H-alpha is a narrowband spectral emission best viewable when other wavelengths of light are reduced or eliminated. ...
L2 Star formation Part I
... Giant molecular clouds (GMC) Star formation takes place in cold, dense gas clouds: The molecular clouds. Stars form in groups or clusters. The largest GMC in Orion is about 1000 light years away. Hot young stars (25-50 million year old) ionize their surroundings and are therefore easily visible. ● ...
... Giant molecular clouds (GMC) Star formation takes place in cold, dense gas clouds: The molecular clouds. Stars form in groups or clusters. The largest GMC in Orion is about 1000 light years away. Hot young stars (25-50 million year old) ionize their surroundings and are therefore easily visible. ● ...
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.