(9) Internal Revenue Code means the Internal Revenue Code of 1986 in effect for the federal tax year beginning on January 1, 2007, not including any changes made by federal law after that date, and any regulations adopted under that code applicable to that period.
Absorbance spectroscopy, commonly referred to as spectrophotometry, is the analytical technique based on measuring the amount of light absorbed by a sample at a given wavelength.
Many substances absorb light. However some of them, after absorbing light of a particular wavelength and energy, emit light of a longer wavelength and lesser energy. Such substances are called âfluorescent substancesâ. Application of this phenomenon is the basis of fluorescence microscope.