# Beer-Lambert Law and Earth’s Atmosphere

As an undergraduate Chemistry teacher, you can use this set of computer-based tools to teach the Beer-Lambert Law and its application in atmospheric radiation absorption studies.

This lesson plan will enable students to learn about the Beer-Lambert Law and understand its application for studying the molar absorptivity of greenhouse gases.

Thus, the use of this lesson plan allows you to integrate the teaching of a climate science topic with a core topic in Chemistry.

Grade Level: Undergraduate
Discipline: Chemistry
Topics: Beer-Lambert Law, Molar Absorptivity, Absorbance of Incident Light, Transmittance of Incident Light, Intensity of Transmitted Light, Greenhouse Gases, Molar Absorption Coefficient, Molar Extinction Coefficient
Climate Topic: Climate and the atmosphere, The Greenhouse Gas Effect
Location: Global
Languages: English
Access: Online (some material may be downloaded for offline use)
Duration: 50-60 min

Learning outcomes

The tools in this lesson plan will enable students to:

  • derive the expression for Beer-Lambert Law
  • define molar absorptivity/molar absorption coefficient/molar extinction coefficient of a medium
  • calculate the effect of concentration of a chemical species and path length on the intensity of transmitted light
  • understand the effect of increasing concentrations of atmospheric greenhouse gases on absorbance of incident sunlight
Lesson Plan contributed by Dr Pragya Gahlot and Dr Rekha Yadav, Sri Venkateswara College (University of Delhi), India