2007-03-01 12:57:05 · 2 answers · asked by Welshwizard 1 in Science & Mathematics ➔ Other - Science
A spectrometer provides a chemical 'fingerprint' of artifacts found at a crime scene. If the same chemical 'fingerprint' is found on a suspect or his/her possessions, an association between the two can be formed. The method is very sensitive: quantities as small as 1e-12 g measuring 1 micron in size can be detected with off the shelf equipment. Research instruments exist that can do much better. Some applications are narcotics, paint chips, plastics, fibres and fabrics. I had an interesting talk once with a scientist from Scotland Yard looking for so technical tips on how to work with a leather artifact.
2007-03-03 04:55:16 · answer #1 · answered by d/dx+d/dy+d/dz 6 · 0⤊ 0⤋
The photospectrometer has many unique features to perform specified test(s) at a given date and time; and cell matching, which corrects for minor differences in multiple cells. Designed with a micro-focused beam, the photospectrometer delivers the full energy of the beam to the microsample, unlike standard beams, which can lose as much as 80% of their energy when applied to a microvolume sample.
2007-03-05 14:12:41 · answer #2 · answered by replycs 3 · 0⤊ 0⤋