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#1 |
Senior Member
Iscritto dal: Apr 2001
Città: Milano
Messaggi: 3736
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Curiosità alla star trek
ma di sensori che sono in grado di analizzare la materia ne esistono ?
Non ho mai fatti ricerche in tale senso ![]() Intendo metodi coi quali si è in grado di determinare ad esempio, di quali sostanze è costituito un minerale o un composto ignoto etc... |
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#2 | |
Junior Member
Iscritto dal: Jun 2006
Messaggi: 25
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Quote:
![]() la prossima volta chiamo il capitano kirk e le faccio teletrasportare a bordo direttamente
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"Meno male che la popolazione non capisce il nostro sistema bancario e monetario, perché se lo capisse, credo che prima di domani scoppierebbe una rivoluzione" (Henry Ford) |
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#3 | |
Senior Member
Iscritto dal: Apr 2001
Città: Milano
Messaggi: 3736
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Quote:
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#4 | |
Junior Member
Iscritto dal: Jun 2006
Messaggi: 25
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Quote:
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__________________
"Meno male che la popolazione non capisce il nostro sistema bancario e monetario, perché se lo capisse, credo che prima di domani scoppierebbe una rivoluzione" (Henry Ford) |
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#5 | |
Senior Member
Iscritto dal: Oct 2000
Città: UK
Messaggi: 7458
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Quote:
Guardano lo spettro (di energia, non solo di luce) emesso da un oggetto e sono in grado di risalire agli elementi che lo compongono. Un esempio è questo: ![]() Lo strumento è questo: Spectrometers Spy Into the Past Knowing the elemental composition of rocks and soil is the key to understanding their formation. Over the course of both rovers' missions, onboard spectrometers confirmed the presence of the mineral hematite that was, in the case of Opportunity's Meridiani Planum landing site, strongly indicated from orbital data. The Miniature Thermal Emission Spectrometer (Mini-TES) has brought to the martian surface essentially the same technology that its sister instruments orbiting Mars aboard Odyssey and Mars Global Surveyor use. The spectrometer is used for remote investigation of mineralogy of rocks and soils. Operating in the thermal infrared region of the spectrum, it identifies rock-forming minerals, and also provides some capability to see through dust coatings that could tend to obscure spectral features of rocks. The mineralogical information that Mini-TES provides is consistently used to select from a distance the rocks and soils that will be investigated in more detail. Along with its mineralogical capabilities, Mini-TES collects data on the thermal properties of rocks and soils. Viewing upward, it can also provide temperature profiles through the Martian atmospheric boundary layer - the layer of atmosphere from the surface to an altitude of 10 kilometers (6.2 miles), and one that cannot be well understood from orbital instruments alone. This black and white image taken on the plains of Meridiani Planum, Mars highlights Opportunity's Moessbauer spectrometer on the end of the rover 'arm.' This instrument's ability to detect the composition and abundance of iron-bearing minerals has been critical during the rover mission. The tool is a circular device that looks like a small flattened donut housed on a larger rectangular metal box. This image taken by the panoramic camera on Opportunity shows the rover's Moessbauer spectrometer (circular device in center). The specialized Moessbauer Spectrometer specifically provides the detailed mineralogy of different kinds of iron-bearing rocks and soils. Placed directly up against target material, the spectrometer illuminates rock surfaces with gamma particles emitted by cobalt-57. The particles interact with the nuclei of the atoms in the targeted material, and characteristics of the radiation reflected back, or "backscattered," into the spectrometer are recorded and measured to determine the presence, amount and types of iron-bearing minerals. The Alpha Particle X-ray Spectrometer (APXS) works by exposing martian materials to energetic alpha particles and X-rays from curium-244, and then measuring the energy spectra of backscattered alpha and X-radiation. The instrument is conceptually similar to but an updated and more capable version of the APXS instrument that was used on the Mars Pathfinder Sojourner rover. ![]() Trovi tutto qui: http://marsrovers.jpl.nasa.gov/techn...mentation.html
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"Questo forum non è un fottuto cellulare quindi scrivi in italiano, grazie." (by Hire) ![]() Le mie foto su Panoramio - Google Earth |
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#6 |
Senior Member
Iscritto dal: Aug 2005
Città: Bologna...! Xbox360Live!: Sakko83
Messaggi: 5167
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Oppure c'è il gascromatografo...!
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гла́вный корабе́льный старшина́ -
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