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Beer Lambert law in Hindi | Beer Lambert Law explained | Lambert beer law equation
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Beer Lambert law in Hindi | Beer Lambert Law explained | Lambert beer law equation

Introduction to Beer-Lambert Law

Overview of Beer-Lambert Law

  • The video introduces the Beer-Lambert Law, explaining its significance and fundamental applications in spectroscopy.
  • It emphasizes the importance of understanding absorption spectra in UV-visible spectroscopy for analyzing compounds.

Absorption Mechanisms

  • When radiation interacts with a compound, three outcomes are possible: absorption, transmission, or emission. Each process is crucial for understanding how compounds interact with light.
  • An example is provided using a cuvette containing a compound (X) exposed to radiation, illustrating how different types of electromagnetic waves can affect absorption.

Types of Spectroscopy

  • The discussion highlights various types of spectroscopy: absorption spectroscopy, transmission spectroscopy, and emission spectroscopy. Each type serves distinct purposes in analyzing samples.
  • The focus remains on where the Beer-Lambert Law applies—specifically in scenarios involving absorption spectroscopy with external radiation sources like UV or visible light.

Understanding Absorption Characteristics

Interaction with Light

  • A specific wavelength of light will be absorbed by a compound if it matches the energy levels that the compound can absorb; this principle underlies the Beer-Lambert Law's application in quantitative analysis.
  • If the concentration of compound X increases within a cuvette, its absorption will also increase proportionally according to the law, while other compounds may not exhibit similar behavior at that wavelength.

Experimental Setup

  • The experiment involves using a quartz cuvette filled with sample X and exposing it to light; this setup allows for measuring how much light is absorbed versus transmitted or reflected by the sample.
  • Different compounds absorb light at specific wavelengths; thus, knowing these characteristics helps identify substances based on their spectral data during experiments involving proteins or DNA samples.

Role of Monochromator

Functionality and Importance

  • A monochromator is introduced as an essential device that filters white light into specific wavelengths before it hits the sample; this ensures accurate measurements related to absorption characteristics are obtained from each sample tested.

Understanding Light Intensity and Absorbance in Solutions

The Relationship Between Incident Light and Transmitted Light

  • The intensity of light entering a medium (incident light) does not equal the intensity of light exiting it due to absorption by compounds within the medium.
  • A blue color is used as an example to illustrate how incident light (I₀) interacts with a specimen, leading to transmission (A).
  • It is emphasized that the transmitted intensity (A) is always less than the incident intensity (I₀), indicating that some light has been absorbed.

Absorbance and Transmission Dynamics

  • The greater the difference between I₀ and A, the higher the absorbance, which means more light is absorbed by compound X.
  • Absorbance can be calculated using a logarithmic relationship: textAbsorbance = logleft(I_0/Aright) .
  • Understanding this relationship is crucial for grasping Beer-Lambert Law, which connects absorbance with concentration and path length.

Beer-Lambert Law Explained

  • Beer’s Law states that absorbance is directly proportional to the concentration of a compound in a sample.
  • Lambert's contribution indicates that absorbance also depends on the width of the sample or cuvette; wider samples lead to greater absorbance.

Key Relationships in Absorbance

  • Both concentration and path length are critical factors affecting absorbance; increasing either will increase absorbance.
  • The relationship can be summarized as: textAbsorbance propto C times L , where C represents concentration and L represents path length.

Final Insights on Absorption Coefficient

  • To express these relationships mathematically, a constant known as molar absorptivity ( ε ) is introduced: A = εCL .
  • This constant reflects how effectively a compound absorbs light at specific wavelengths; higher values indicate stronger absorption capabilities.
Video description

Beer Lambert law in Hindi - This lecture explains Beer Lambert law in Hindi. Learn about Beer Lambert law in Hindi from this video. This law is used to calculate the amount of alcohol in a beverage. बीयर-लैम्बर्ट कानून एक फोटोमीट्री प्रयोग है जो एक रोशनी विकिरण धातु के ऊष्मीय विकिरण के लिए उपयोगी होता है। यह उपयोग धातु की गुणवत्ता का मापना करने के लिए भी किया जाता है, जो धातु के प्रतिरोध के साथ संबंधित होता है। यह उदाहरण के रूप में एक ब्रह्मांडीय वस्तु की वेगवर्धन तकनीकों के लिए भी उपयोगी होता है। बीयर-लैम्बर्ट कानून अनुसार, एक धातु विकिरण के पारदर्शी के अधिकतम तकनीकी गुणवत्ता के लिए अपने ऊष्मीय विकिरण की एक उपयुक्त विवरणी होती है। यह उपयोग किया जाता है ताकि परीक्षक या परीक्षार्थी द्वारा धातु विकिरण की गुणवत्ता के आधार पर उसकी ऊष्मीय विकिरण की गणना की जा सके। बीयर-लैम्बर्ट कानून का सारांश है: I = I₀e^(-αcL) यहां, I = विकिरण के पारदर्शी से निकलने वाली रोशनी की ताकत I₀ = शुरुआती रोशनी की ताकत c = धातु की विलयन घनता (यानी विलयन में प्रतिशत वजन) If you're looking for information about Beer Lambert law in Hindi, this video is for you! In this video, I'll explain the law in Hindi, along with some examples. If you're studying for a test or just want to know more about Beer Lambert law, this video is for you! Stay tuned to know the following - beer lambert law,beer lambert law in spectroscopy,beer lambert law derivation,beer lambert law in hindi,beer lambert law experiment,beer lambert law calculations,derivation of beer lambert law,lamberts law,the beer lambert law,beer lambert law lecture,beer lambert law explained,mathematical derivation of beer lambert law,explanation of beer lambert law,beer lambert law in spectroscopy derivation beer lambert law in spectroscopy deviation,derivation and deviation of beer lambert law,beer lambert law derivation in spectroscopy,beer lambert law deviation,what is beer lambert law,beer lambert law chemistry,derivation beer lambert law,photochemistry beer lambert law bsc Join, Shomu's Biology csir net life science online coaching - http://www.shomusbiology.com/net-coaching Get Shomu's Biology CSIR NET life science study materials here- http://www.shomusbiology.com/dvd-store/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching We are social. Find us on different sites here- Our Website – www.shomusbiology.com Facebook page- https://www.facebook.com/ShomusBiology/ Twitter - https://twitter.com/shomusbiology SlideShare- www.slideshare.net/shomusbiology Google plus- https://plus.google.com/113648584982732129198 LinkedIn - https://www.linkedin.com/in/suman-bhattacharjee-2a051661 Youtube- https://www.youtube.com/user/TheFunsuman Thank you for watching the lecture on Beer Lambert law in Hindi.