'Ir active' diaporamas de présentation

Raman Spectroscopy

633 views • 35 slides

Crystalline polymers & Vibrational spectroscopy of polymers

746 views • 31 slides

Infrared Spectrometry

Infrared Spectrometry. Wavelengths 0.78 m m to 1000 m m 3 regions Near-, mid-, and far Theory Sources Instrumentation. IR energy. Changes are vibrational or rotational Data in wavenumbers cm -1 IR not energetic Promotion to differences in vibrational and rotational states

610 views • 21 slides

2) Infra-red spectroscopy

2) Infra-red spectroscopy. The Energy of molecular vibrations. To be IR active, a molecule must undergo a change in dipole. IR spec. E=hf (E=h ? ) Meaning the electromagnetic spectrum covers ALL energy ranges. http://www.wag.caltech.edu/home/jang/genchem/infrared.htm. IR spec.

307 views • 16 slides

The Greenhouse Effect

The Greenhouse Effect. Terrestrial Emissions. Terrestrial emissions have energies corresponding to the infrared (IR) region of the electromagnetic spectrum. Visible & UV Radiation. Certain energies cause electrons to be excited into higher energy orbitals

155 views • 15 slides