In the past, IR spectra had to be aquired one wavelength at a time, which took a long time. Today quick spectra is due to the

light is faster today that it used to be

the Fourier Transfer Algorithm allows us to scan all frequencies at once

absence of broad spectrum of wavelenth

In the past, IR spectra had to be aquired one wavelength at a time, wh

1.	In the past, IR spectra had to be aquired one wavelength at a time, which took a long time. Today quick spectra is due to the
A.	the Fourier Transfer Algorithm allows us to scan all frequencies at once
B.	light is faster today that it used to be
C.	absence of broad spectrum of wavelenth
D.	none of the above
Answer» B. light is faster today that it used to be