Term
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Definition
| An analysis in which atoms absorb and emit light. |
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Term
| Typical stellar spectra appear as: |
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Definition
| A rainbow but with some dark lines mixed in. |
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Term
| Which is a classic continuos spectrum? |
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Definition
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Term
| In an atom, which particles give the element its identity (atomic number)? |
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Definition
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Term
| The particles which enter into chemical reactions are the atoms... |
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Definition
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Term
| A hydrogen atom consists of an electron and a... |
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Definition
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Term
| The particle which adds mass but no charge to the atomic nucleus is the... |
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Definition
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Term
| An emission spectrum can be used to identify an... |
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Definition
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Term
| The classic model of hydrogen that explains its spectral line structure is due to... |
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Definition
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Term
| In a hydrogen atom, a transition from the third to the second energy level will produce... |
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Definition
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Term
| The three laws dealing with the creation of various spectra are due to... |
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Definition
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Term
| The Fraunhauffer lines in the solar system are actually... |
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Definition
| Absorption lines due to the thin outer layer above the photosphere. |
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Term
| Which type of electromagnetic radiation has the highest energy? |
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Definition
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Term
| Energy required to ionize a hydrogen atom whose electron is in the ground state... |
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Definition
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Term
| Why are molecular lines more complex than elemental spectral lines? |
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Definition
| Molecules and vibrate and rotate as well. |
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Term
| The splitting of spectral lines in the presence of strong magnetic fields is the... |
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Definition
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Term
| For hydrogen, the transition from the second to the fourth energy level produces... |
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Definition
| A blue green absorption line. |
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Term
| Since the difference in energy between the different rotational states in a molecule can be very small, many molecular lines can be observed with... |
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Definition
| Radio or Microwave telescopes. |
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Term
| The Orion nebule, m-42 is a hot, thin cloud of glowing gas so its spectrum is... |
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Definition
| A few bright lines against a dark background. |
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Term
| The element first found in the sun's spectrum then on earth 30 years later is... |
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Definition
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Term
| An incandescent light ( glowing tungsten filament ) produces... |
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Definition
| A continuous spectrum with its peak giving the temperature to the filament. |
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Term
| A neon light (thin hot neon gas in a thin tube) gives us... |
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Definition
| A few bright emission lines, telling us the gas in neon. |
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Term
| Which has the lowest electromagnetic radiation... |
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Definition
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Term
| In Bohrs model of the atom, electrons... |
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Definition
| Only make transitions between orbitals of specific energies. |
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Term
| In space, positive ions are the result of... |
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Definition
| Electrons being stripped off the outer electron shell for hot atoms. |
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Term
| According to the photoelectirc effect in order to realease electrons from a solid, the light incidents on it must... |
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Definition
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Term
| Energy required to move an electron from energy level one to energy level two is... |
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Definition
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Term
| Energy required to move an electron in Hydrogen energy level two to level three is... |
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Definition
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Term
| Balmer Beta absorption line is result of transition of electron in hydrogen level _ to level _... (real one) |
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Definition
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Term
| Emission lines of hydrogens that are found the the ultraviolet part of the electromagnetic spectrum are formed by electrons (levels?)... |
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Definition
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Term
| It is diffraction that limits the _ of a telescopes objective... |
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Definition
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Term
| What is primary purpose of an Astronomical telescope? |
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Definition
| To collect a lot of light and bring it into focus. |
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Term
| The process occuring when protons bounce off a polished surface is called... |
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Definition
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Term
| Which type of telescope has the simplest light path? |
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Definition
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Term
| Which design is subject to chromatic abberation? |
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Definition
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Term
| The tendency of a wave to bend as it passes from one transparent medium to another is called... |
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Definition
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Term
| The primary focus of a telescope is to... |
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Definition
| Collect large amount of light and bring it into focus... |
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Term
| What problem do refractor telescopes have that reflectors don't? |
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Definition
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Term
| This design only involves one optical surface, a conclave mirror... |
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Definition
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Term
| The amount of diffraction and thus the resolution of the scope depends upon... |
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Definition
| The wavelength used and the size of the main telescope objective lens or mirror. |
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Term
| The angular resolution of an eight inch diameter telescope is _ greater than that of a two inch diameter telescope... |
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Definition
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Term
| What is the reolution of a telescope? |
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Definition
| Its ability to distinguish two adjacent objects close together in the sky. |
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Term
| What type of telescope is the subaru telescope? |
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Definition
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Term
| What is the resolving power of the telescope? |
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Definition
| The ability to distinguish objects in the sky. |
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Term
| The most important advantage of CCDs over film is that... |
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Definition
| They record much more light in a given exposure time. |
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Term
| Refractor telescopes suffer from this seperation of light into its component colors... |
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Definition
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Term
| The Aricibo radio telescope is laid out like which optical telescope design? |
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Definition
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Term
| What is true of radio telescopes? |
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Definition
| They have poorer angular resolution than a refractor. |
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Term
| In which part of the electromagnetic spectrum have astronomers been unable to get any info? |
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Definition
| We can get info from all spectral lengths. |
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Term
| The amount of diffraction a telescope creates depends upon... |
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Definition
| The wavelength and diameter of the telescop objective. |
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Term
| Compared to optical telescopes, radio telescopes are built large because... |
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Definition
| Radio photons don't carry much energy. |
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Term
| Why are most large telescopes reflectors not refractors? |
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Definition
- Reflectors don't suffer from chromatic abberation.
- Large very clear lenses are harder to cast than more tolerant mirror blanks.
- Large lenses deform under own weight but mirrors can be supported. |
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Term
| Which method of astronomical measurement is the precise measurement of brightness? |
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Definition
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Term
| Diffraction is the tendency of light to... |
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Definition
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Term
| A mountaintop is a good site for infrared telescopes since... |
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Definition
- Above CO2 and water vapor.
- Cold weather helps sensitivity.
- Less air means better seeing. |
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Term
| What type of telescope is the Hubble space telescope? |
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Definition
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Term
| Green light has shorter wavelength than orange light. In a five inch telescope, green light will... |
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Definition
| Provide better angular resolution than orange light. |
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Term
| The name of new infrared orbiting observatory is... |
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Definition
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Term
| The Chandra X-Ray telescope must use... |
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Definition
| Grazing incident optics to focus the short wavelengths. |
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Term
| A major advantage of a Newtonian reflector over a refractor is... |
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Definition
| Elimination of Chromatic abberation. |
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Term
| Which design has a convex primary mirror and a flat secondary mirror with eyepiece located on top side of telescope tube? |
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Definition
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Term
| The convex secondary mirror in this design focuses light down through a hole cut in concave primary mirror... |
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Definition
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Term
| What is light gathering power of an 8 inch telescope compared to a 4 inch telescope? |
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Definition
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