- #1

- 2

- 0

## Main Question or Discussion Point

I'm doing a science project about the antioxidant activity of red wines from my country. This days, I was going through the theoretical part ( the basics of spectrophotometry, photometric analysis ect. ) and I'm currently at the Beer-Lambert Law. I'm would like to know

where:

the equation

note: the molar absorbtivity is represented by

Thanks in advance

__that is used so that starting from this two equations:__**the whole mathematical path****A = 2 - log**and_{10}%T**A = [tex]\epsilon[/tex]bc**,where:

**A**is absorbance, ( no units )**T**is transmittance, ( no units )**[tex]\epsilon[/tex]**is molar absorbtivity, ( L mol^{-1}cm^{-1})**b**is the length of the sample ( path length of the cuvette ) ( cm ) and**c**is the concentration of the compound in solution ( mol L^{-1})the equation

**%T = e**is deduced.^{-[tex]\epsilon[/tex]bc}note: the molar absorbtivity is represented by

__the letter epsilon__from the Greek alphabet and__it's not superscripted__as it looks like.Thanks in advance