Espectrofotometro

Páginas: 4 (839 palabras) Publicado: 6 de diciembre de 2012
What Is a Spectrometer?
A spectrometer is a common tool used by various scientists to determine information about an object or substances through the analysis of its light properties. Unknowncompositions broken down into basic elemental components or lights emitted from far away galaxies can be used to determine information about space objects, including their size and speed.
Basic Purpose* Spectrometers have a variety of uses in the science industry particularly in astronomy and chemistry. All spectrometers have three basic parts--they produce a spectrum, disperse the spectrum andmeasure the intensities of lines produced from the spectrum. Every substance and element produces different light frequencies and patterns which are sort of like their own fingerprints. Using thisprinciple, scientists can analyze unknown substances and materials using spectrometers then compare the results to known patterns to determine the composition of the test subject.
How to Use
*Spectrometers are fairly easy to set up and use. Generally, the spectrometer is turned on and allowed to heat up completely before use. It is loaded with a known substance and calibrated at a wavelengthsimilar to that of the known substance. Once the machine is calibrated, the test sample is loaded into the machine and a spectrum is determined for the sample. The wavelengths are analyzed and compared tovarious known readings to determine the composition of the new substance. This process can similarly be done without loading an actual substance into a spectrometer but rather just allowing light topass through the machine for readings. Astronomers often use this method using light from deep space.
* How it Works
To accurately determine a spectrum for substances, a gaseous form of thesubstance must be subjected to light and a spectrum is created. So, when samples are loaded into spectrometers, the high temperature of the machine vaporizes the tiny sample and light is refracted...
Leer documento completo

Regístrate para leer el documento completo.

Estos documentos también te pueden resultar útiles

  • Espectrofotometro
  • Espectrofotometro
  • ESPECTROFOTOMETR A
  • Espectrofotómetro
  • Espectrofotometro
  • Espectrofotómetro
  • Espectrofotómetro
  • Espectrofotometro

Conviértase en miembro formal de Buenas Tareas

INSCRÍBETE - ES GRATIS