Difference Between
versus

Absorbance vs. Transmittance: Know the Difference

Shumaila Saeed
By Shumaila Saeed || Updated on December 25, 2023
Absorbance measures how much light a material absorbs, whereas transmittance measures how much light passes through a material.
Absorbance vs. Transmittance

Key Differences

Absorbance is a measure of the amount of light absorbed by a substance, often used in spectrophotometry to analyze concentration. Transmittance, on the other hand, quantifies the amount of light that passes through a sample, reflecting its transparency or clarity.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
In absorbance, higher values indicate more light being absorbed and less passing through the material. In contrast, higher transmittance values signify that more light is transmitted through the sample, indicating lower absorption.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
Absorbance is logarithmically related to transmittance; as transmittance decreases, absorbance increases. This relationship is foundational in many analytical techniques, like UV-Vis spectroscopy, where absorbance is measured to determine substance concentration.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
Absorbance is crucial in applications like colorimetry, where the color intensity of solutions indicates concentration. Transmittance is key in quality control for transparent materials, ensuring consistency in properties like clarity and color.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
Both absorbance and transmittance are affected by factors like wavelength of light, sample thickness, and concentration. They provide complementary information; absorbance focuses on what’s retained by the material, while transmittance emphasizes what passes through.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
ADVERTISEMENT

Comparison Chart

Definition

Measure of light absorbed by a material
Measure of light passing through a material
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Indication of Higher Value

More light absorbed, less transmitted
More light transmitted, less absorbed
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Relation to Concentration

Directly proportional to substance concentration
Inversely proportional to substance concentration
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Common Use

Analyzing concentration in solutions
Assessing clarity and transparency of materials
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Measurement Units

Dimensionless (logarithmic scale)
Often given as a percentage
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
ADVERTISEMENT

Relation to Wavelength

Dependent on the material's absorption spectrum
Dependent on material's transmission properties
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Mathematical Relation

A = -log(T)
T = 10^(-A)
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Importance in Industries

Crucial in chemical analysis and research
Vital in material quality control
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Dependence on Sample Thickness

Increases with increasing thickness
Decreases with increasing thickness
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Role in Spectroscopy

Central in absorbance spectroscopy
Used in transmission spectroscopy
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023
ADVERTISEMENT

Absorbance and Transmittance Definitions

Absorbance

A logarithmic ratio of incident to absorbed light.
Absorbance was calculated to determine the sample's concentration.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Transmittance

A measure indicating the permeability of light through a material.
They noted high transmittance in the thin film.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Absorbance

A parameter used in spectrophotometry.
They recorded the absorbance at different wavelengths.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Transmittance

The fraction of light that passes through a substance.
The transmittance of the glass was measured to check its clarity.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Absorbance

Indicator of a substance's ability to absorb light.
High absorbance indicated a high concentration of the solute.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Transmittance

Used in spectrophotometry to determine clarity.
Transmittance values were crucial for their optical study.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Absorbance

The measure of light absorption by a substance.
The absorbance of the solution increased with added dye.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Transmittance

Opposite of absorbance in light transmission.
As the absorbance increased, the transmittance decreased.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Absorbance

Reflects the attenuation of light due to a material.
The absorbance of the filter was tested under various lights.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Transmittance

A transmission.
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Absorbance

(physics) A logarithmic measure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density.
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Transmittance

(Physics) The ratio of the radiant energy transmitted to the total radiant energy incident on a given body.
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Transmittance

A transmission
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Transmittance

(physics) the fraction of incident light, or other radiation, that passes through a substance
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Transmittance

Transmission.
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Transmittance

The fraction of radiant energy that passes through a substance
Shumaila Saeed
Shumaila Saeed
Oct 19, 2023

Transmittance

A percentage representation of transmitted light.
The solution's transmittance was 75%, indicating moderate clarity.
Shumaila Saeed
Shumaila Saeed
Nov 16, 2023

Repeatedly Asked Queries

Is Absorbance dependent on concentration?

Yes, higher concentration typically leads to higher absorbance.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Does Absorbance vary with wavelength?

Yes, it depends on the substance and the light's wavelength.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

How is Absorbance related to Beer-Lambert Law?

This law states that absorbance is proportional to concentration and path length.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Is Absorbance a qualitative or quantitative measure?

It's primarily used as a quantitative measure.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What units are used for Absorbance?

Absorbance is a dimensionless unit, often denoted as 'A'.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Can Absorbance be negative?

No, absorbance values are always positive or zero.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Can Transmittance be greater than 100%?

No, it ranges from 0% to 100%.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What is Absorbance?

Absorbance is a measure of how much light is absorbed by a substance.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What factors affect Absorbance?

Factors like concentration, path length, and wavelength affect it.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

How is Absorbance measured?

It's measured using a spectrophotometer that passes light through a sample.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What is the Absorbance spectrum?

A plot showing how absorbance varies with different wavelengths.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What is Transmittance?

Transmittance is the measure of how much light passes through a substance.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Does Transmittance vary with wavelength?

Yes, it varies depending on the substance and light's wavelength.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

How is Transmittance measured?

It's measured using a spectrophotometer, denoted as a percentage.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What is the relationship between Absorbance and Transmittance?

They are inversely related; high absorbance means low transmittance.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What is a Transmittance spectrum?

A graph showing transmittance across different wavelengths.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Is Transmittance affected by concentration?

Yes, higher concentrations usually decrease transmittance.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Is Transmittance a linear measurement?

Yes, it's linear with respect to light intensity.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

What applications use Transmittance?

It's used in fields like chemistry, physics, and material science.
Shumaila Saeed
Shumaila Saeed
Nov 18, 2023

Share this page

Link for your blog / website
HTML
Link to share via messenger
About Author
Shumaila Saeed
Written by
Shumaila Saeed
Shumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.

Popular Comparisons

Trending Comparisons

Japanese Eyes vs. Chinese EyesJapanese Eyes vs. Chinese Eyes
Shumaila SaeedShumaila Saeed
December 25, 2023
Japanese Eyes and Chinese Eyes refer to linguistic structures in Japanese and Chinese respectively, each reflecting unique aspects of grammar and syntax.
Poster vs. InfographicPoster vs. Infographic
Shumaila SaeedShumaila Saeed
December 25, 2023
A Poster is a large printed image or notice for public display, while an Infographic is a visual representation of information or data.
Pulley vs. SheavePulley vs. Sheave
Hifza NasirHifza Nasir
April 4, 2024
A pulley is a wheel on an axle designed to support movement and change of direction of a taut cable, while a sheave is the wheel part of a pulley system that specifically interacts with the cable.
LTE vs. CDMALTE vs. CDMA
Shumaila SaeedShumaila Saeed
February 4, 2024
LTE (Long Term Evolution) is a 4G wireless communication standard with high-speed data transfer, while CDMA (Code Division Multiple Access) is an older 2G/3G technology for mobile networks.
Moms vs. Mom'sMoms vs. Mom’s
Shumaila SaeedShumaila Saeed
February 22, 2024
"Moms" is the plural form of "mom," referring to multiple mothers, while "Mom's" is the possessive form of "mom," indicating something belongs to or is related to a mother.
Goth vs. AltGoth vs. Alt
Shumaila SaeedShumaila Saeed
February 5, 2024
Goth is a dark, often Victorian-influenced subculture and style, while Alt (alternative) is a broader term encompassing non-mainstream styles and attitudes.
Nike Air Force 1 LE vs. Nike Air Force 1 '07Nike Air Force 1 LE vs. Nike Air Force 1 ’07
Hifza NasirHifza Nasir
April 16, 2024
Nike Air Force 1 LE often represents limited edition releases with unique designs, while Nike Air Force 1 '07 is a modern version of the classic, maintaining the iconic style with updated materials.
Formal Assessment vs. Informal AssessmentFormal Assessment vs. Informal Assessment
Shumaila SaeedShumaila Saeed
December 25, 2023
Formal assessments are structured and standardized, while informal assessments are flexible and observational.
Pycharm Community vs. Pycharm ProPycharm Community vs. Pycharm Pro
Shumaila SaeedShumaila Saeed
February 4, 2024
PyCharm Community is a free, open-source IDE for Python development, while PyCharm Pro is a paid version with additional advanced features like web development support and database tools.
Login vs. LogonLogin vs. Logon
Shumaila SaeedShumaila Saeed
December 25, 2023
"Login" and "Logon" are often used interchangeably to describe the process of gaining access to a computer system, but "login" can also refer to the credentials used for access.
House of Representatives vs. SenateHouse of Representatives vs. Senate
Shumaila SaeedShumaila Saeed
December 25, 2023
The House of Representatives, based on population, drafts tax legislation and impeachment charges, while the Senate, with equal representation per state, tries impeachments and ratifies treaties.
Gorilla Glass 3 vs. Gorilla Glass 5Gorilla Glass 3 vs. Gorilla Glass 5
Shumaila SaeedShumaila Saeed
January 1, 2024
Gorilla Glass 3 offers improved scratch resistance and durability compared to its predecessors, while Gorilla Glass 5 focuses on enhanced drop protection and toughness.
Happen vs. OccurHappen vs. Occur
Shumaila SaeedShumaila Saeed
December 25, 2023
"Happen" refers to events or actions taking place, often with an unplanned or casual connotation, while "occur" implies events or phenomena that take place, often with a more formal or scientific tone.
FHSS vs. DSSSFHSS vs. DSSS
Shumaila SaeedShumaila Saeed
February 25, 2024
FHSS (Frequency-Hopping Spread Spectrum) uses rapid frequency changes within a band. DSSS (Direct Sequence Spread Spectrum) spreads signals over a wider frequency using a code.
NM3 vs. M3NM3 vs. M3
Hifza NasirHifza Nasir
April 19, 2024
NM3 measures gas volume under Normal conditions (0°C and 1.01325 bar), while M3 measures volume under the conditions at which it is measured, without standard adjustment.
Contact Force vs. Field ForceContact Force vs. Field Force
Shumaila SaeedShumaila Saeed
December 25, 2023
Contact Force is a force applied through physical contact, while Field Force acts over a distance without physical contact.
Cache Memory vs. Main MemoryCache Memory vs. Main Memory
Hifza NasirHifza Nasir
May 18, 2024
Cache memory is a fast, volatile memory for quick access to frequently used data, enhancing processor speed. Main memory (RAM) is a larger, slower volatile memory for currently used data and programs.
Benzyl Chloride vs. Benzoyl ChlorideBenzyl Chloride vs. Benzoyl Chloride
Shumaila SaeedShumaila Saeed
January 3, 2024
Benzyl Chloride is a chlorinated aromatic hydrocarbon used in organic synthesis, while Benzoyl Chloride is an acyl chloride used as a reagent in chemistry.
Fudge vs. BrownieFudge vs. Brownie
Shumaila SaeedShumaila Saeed
December 25, 2023
Fudge is a soft, dense, and creamy confectionery made from sugar, butter, and milk or cream, while a brownie is a baked dessert, typically chocolate-based, with a dense, cake-like texture.
Term vs. SemesterTerm vs. Semester
Shumaila SaeedShumaila Saeed
December 25, 2023
Term is a general period for any division of the academic year, while Semester specifically refers to half of an academic year.
Interviewer vs. IntervieweeInterviewer vs. Interviewee
Shumaila SaeedShumaila Saeed
December 25, 2023
The interviewer conducts the interview, asking questions and guiding the conversation, while the interviewee is the one responding and being evaluated.
Slavic Facial Features vs. Germanic Facial FeaturesSlavic Facial Features vs. Germanic Facial Features
Shumaila SaeedShumaila Saeed
January 31, 2024
Slavic facial features often include high cheekbones and rounder faces, while Germanic facial features typically have sharper angles and stronger jawlines.
Shall vs. Shall beShall vs. Shall be
Shumaila SaeedShumaila Saeed
February 14, 2024
"Shall" is a modal verb used to indicate future action or a strong intention, while "shall be" is its future tense form, often implying a sense of obligation or inevitability.
Grand Opening vs. Soft OpeningGrand Opening vs. Soft Opening
Shumaila SaeedShumaila Saeed
December 25, 2023
A Grand Opening is a highly publicized and celebratory launch of a business or venue, while a Soft Opening is a more subdued trial opening, often with limited services or a smaller audience.

Featured Comparisons

New Comparisons