Absorbance doesn't have any units because its the ratio of the amount of light that passes through a solution compared to the amount of light that is passed into it.
There are no units for absorbance in spectrometer readings as the intensities that are displayed are just numbers. The reason for this is that Absorption is defined as a ratio between the amount of light going in versus coming out after being through the sample. In short, absorbance is unitless.
The absorption coefficient is a property of a material. It defines the extent to which a material absorbs energy, for example that of sound waves or electromagnetic radiation. Wallace Sabine was a pioneer of this concept in acoustics and defined the unit of the Sabine. A Sabine is defined as a fraction of acoustic power absorbed by a 1m square of open window. In SI units, absorption coefficient is measured in inverse metres, and is represented by the Greek letter mu.
Sound Absorption Coefficients for Some Common Materials - This website helps one understand the concept as well as provides formulai and some coefficients.
In chemistry and biological sciences, the absorption coefficient is a measure of the solubility of a gas in a liquid measured as the volume of the gas (taken under standard conditions) that saturates a unit volume of the liquid.
This physics-related article is a stub. You can help Wikipedia by expanding it.
the reults for absorabnce are completly arbitrary and mean nothing unless compaired with something of the same in different concentration, so the results only mean to compair not analyise
Answers & Comments
Verified answer
Absorbance doesn't have any units because its the ratio of the amount of light that passes through a solution compared to the amount of light that is passed into it.
Absorbance Units
For the best answers, search on this site https://shorturl.im/S49yu
There are no units for absorbance in spectrometer readings as the intensities that are displayed are just numbers. The reason for this is that Absorption is defined as a ratio between the amount of light going in versus coming out after being through the sample. In short, absorbance is unitless.
Absorbance has got no units
No units. Sometimes you'll see absorbance units (AU), but because it's a ratio between absorbance and transmission, it's functionally unitless.
The absorption coefficient is a property of a material. It defines the extent to which a material absorbs energy, for example that of sound waves or electromagnetic radiation. Wallace Sabine was a pioneer of this concept in acoustics and defined the unit of the Sabine. A Sabine is defined as a fraction of acoustic power absorbed by a 1m square of open window. In SI units, absorption coefficient is measured in inverse metres, and is represented by the Greek letter mu.
Sound Absorption Coefficients for Some Common Materials - This website helps one understand the concept as well as provides formulai and some coefficients.
In chemistry and biological sciences, the absorption coefficient is a measure of the solubility of a gas in a liquid measured as the volume of the gas (taken under standard conditions) that saturates a unit volume of the liquid.
This physics-related article is a stub. You can help Wikipedia by expanding it.
Absorbance is the logarithm of the ratio of the intensities of the incident light (Io) and the transmitted light (I).
A = log(Io / I)
Thus, no units. or if you insist then Absorbance Units.
No units, it is a ratio between the incident light and the transmitted
the reults for absorabnce are completly arbitrary and mean nothing unless compaired with something of the same in different concentration, so the results only mean to compair not analyise
absorbance unit (a.u.)