The Other Lost Forum
Namaste and welcome to The Other Lost Forum!...guests, please join to get rid of those annoying google adds!
The Other Lost Forum
Namaste and welcome to The Other Lost Forum!...guests, please join to get rid of those annoying google adds!
The Other Lost Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

The Other Lost Forum

We are here seeking refuge. No more theory bashing, abuse or spam! Just have fun and enjoy each other!
 
HomeGalleryLatest imagesSearchRegisterLog in
Search
 
 

Display results as :
 
Rechercher Advanced Search
Latest topics
» The Qualities and Services of a Good Calgary Dentist
Spectroscopy EmptyFri Jun 24, 2011 7:12 am by Jessica24

» Season 5 Rewatch
Spectroscopy EmptyMon Jun 06, 2011 12:51 am by LostINZ

» The Nintendo DS
Spectroscopy EmptyWed Jan 19, 2011 9:01 am by be_map1512

» Pulaski County
Spectroscopy EmptyWed Jan 19, 2011 9:01 am by be_map1512

»  Come on and I'll show You the good time
Spectroscopy EmptyWed Jan 19, 2011 12:39 am by sangbmt

Navigation
 Portal
 Index
 Memberlist
 Profile
 FAQ
 Search
Affiliates
brothersoft.com
brothersoft.com
brothersoft.com
Follow us on Twitter
 

 

 Spectroscopy

Go down 
AuthorMessage
tungduong_9102




Posts : 162
Points : 486
Join date : 2010-10-14

Spectroscopy Empty
PostSubject: Spectroscopy   Spectroscopy EmptyMon Oct 25, 2010 12:52 am

Spectroscopy was originally the study of the interaction between radiation and matter as a function of wavelength (λ). Historically, spectroscopy referred to the use of visible light dispersed according to its wavelength, e.g. by a prism. Later the concept was expanded greatly to comprise any measurement of a quantity as a function of either wavelength or frequency. Thus, it also can refer to a response to an alternating field or varying frequency (ν). A further extension of the scope of the definition added energy (E) as a variable, once the very close relationship E = hν for photons was realized (h is the Planck constant). A plot of the response as a function of wavelength—or more commonly frequency—is referred to as a spectrum; see also spectral linewidth.

Spectrometry is the spectroscopic technique used to assess the concentration or amount of a given chemical (atomic, molecular, or ionic) species. In this case, the instrument that performs such measurements is a spectrometer, spectrophotometer, or spectrograph.

Spectroscopy/spectrometry is often used in physical and analytical chemistry for the identification of substances through the spectrum emitted from or absorbed by them.

Spectroscopy/spectrometry is also heavily used in astronomy and remote sensing. Most large telescopes have spectrometers, which are used either to measure the chemical composition and physical properties of astronomical objects or to measure their velocities from the Doppler shift of their spectral lines.

Diamond Trilogy Rings
gifts
Back to top Go down
 
Spectroscopy
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
The Other Lost Forum :: Theories-
Jump to: