Search results with tag "Fourier transformed"
On Fourier Transforms and Delta Functions
www.ldeo.columbia.eduindependent variable (x, say), then the Fourier-transformed function will have significant amplitude over a wide range of its independent variable (k, say). And if the transformed function is significant over only a narrow range of k values, the original function will be spread over a wide range of x values.
What is FT IR? - Northwestern University
www.nuance.northwestern.eduFourier Transformation. The computer can perform the Fourier transformation calculation and present an infrared spectrum, which plots adsorbance (or transmittance) versus wavenumber. When an interferogram is Fourier transformed, a single beam spectrum is generated. A single
Applications of Group Theory to Spectroscopy
xuv.scs.illinois.eduAn FTIR interferogram converts wavelength into mirror position (i.e. energy into time). The central peak is at the ZPD position ("Zero Path Difference") where the maximum amount of light passes through the interferometer to the detector. FTIR Interferogram The interferogram is then fast Fourier transformed (FFT) back into the