For courses in health and physical education, expenses for supplies are qualified expenses only if related to athletics. This deduction is for expenses paid or incurred during the tax year. You claim the deduction on line 23 of Form 1040 (PDF) or line 16 of Form 1040A (PDF).
In astronomy, the term spectrophotometry refers to the measurement of the spectrum of a celestial object in which the flux scale of the spectrum is calibrated as a function of wavelength, usually by comparison with an observation of a spectrophotometric standard star, and corrected for the absorption of light by the Earth's atmosphere.
In colorimetry, the color of the sample is compared with a color of a standard in which the color is known. Colorimeter is the equipment used to measure the colored samples and give the appropriate absorptions. Spectrophotometry. Spectrophotometer is the instruments used in this technique.