Added Beer Lambert Law Calculator (#1965)

Rakesh9100 · Jan 3, 2025 · 2026b1e · 2026b1e
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diff --git a/Calculators/Beer-Lambert-Law-Calculator/README.md b/Calculators/Beer-Lambert-Law-Calculator/README.md
@@ -0,0 +1,52 @@
+# <p align="center">Beer Lambert Law Calculator</p>
+
+## Description :-
+
+This project is a web-based calculator that implements the **Beer-Lambert Law**:
+
+\[ A = \varepsilon \cdot c \cdot l \]
+
+It allows users to calculate the absorbance (\( A \)) of a solution based on:
+
+- \( \varepsilon \): Molar Absorptivity (L/mol·cm)
+- \( c \): Concentration (mol/L)
+- \( l \): Path Length (cm)
+
+## Tech Stacks :-
+
+- HTML
+- CSS
+- JavaScript
+
+## Features :-
+
+- **Dynamic Formula Display**: The formula is displayed in LaTeX for clarity.
+- **Real-Time Results**: Automatically calculates the absorbance when valid inputs are provided.
+- **Modern UI**: A responsive design with a stylish dark blue card background.
+- **Error Handling**: Ensures all inputs are valid and provides feedback for invalid data.
+
+## How to Use :-
+
+1. Enter the values for:
+   - Molar Absorptivity (\( \varepsilon \)) in L/mol·cm
+   - Concentration (\( c \)) in mol/L
+   - Path Length (\( l \)) in cm.
+2. Click the **Calculate** button to compute the absorbance (\( A \)).
+3. Click the **Clear** button to reset the inputs and results.
+
+### Example Calculation :-
+
+#### Case:
+- \( \varepsilon = 5000 \, \text{L/mol·cm} \)
+- \( c = 0.02 \, \text{mol/L} \)
+- \( l = 1 \, \text{cm} \)
+
+#### Output:
+- Absorbance (\( A \)):
+  \[
+  A = \varepsilon \cdot c \cdot l = 5000 \cdot 0.02 \cdot 1 = 100
+  \]
+
+## Screenshots :-
+
+![image](https://github.com/user-attachments/assets/9988db82-769e-4d6c-95f7-b2f0ed5b3b45)
diff --git a/Calculators/Beer-Lambert-Law-Calculator/assets/background.webp b/Calculators/Beer-Lambert-Law-Calculator/assets/background.webp
diff --git a/Calculators/Beer-Lambert-Law-Calculator/index.html b/Calculators/Beer-Lambert-Law-Calculator/index.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="style.css">
+    <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+    <script src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+    <title>Beer Lambert Law Calculator</title>
+</head>
+
+<body>
+    <div class="calculator">
+        <h1>Beer-Lambert Law Calculator</h1>
+        <p class="formula">
+            Formula:
+            <span id="latex-formula">\( A = \varepsilon \cdot c \cdot l \)</span>
+        </p>
+
+        <p class="constant">Where:</p>
+
+        <ul>
+            <li>\( A \): Absorbance</li>
+            <li>\( \varepsilon \): Molar Absorptivity (L/mol·cm)</li>
+            <li>\( c \): Concentration (mol/L)</li>
+            <li>\( l \): Path Length (cm)</li>
+        </ul>
+
+        <label for="epsilon">Molar Absorptivity (\( \varepsilon \)):</label>
+        <input type="number" id="epsilon" placeholder="Enter Molar Absorptivity">
+
+        <label for="concentration">Concentration (\( c \)) (mol/L):</label>
+        <input type="number" id="concentration" placeholder="Enter Concentration">
+
+        <label for="length">Path Length (\( l \)) (cm):</label>
+        <input type="number" id="length" placeholder="Enter Path Length">
+
+        <div class="buttons">
+            <button onclick="calculateAbsorbance()">Calculate</button>
+            <button onclick="clearInputs()">Clear</button>
+        </div>
+        <div class="result" id="result"></div>
+    </div>
+
+    <script src="script.js"></script>
+</body>
+
+</html>
diff --git a/Calculators/Beer-Lambert-Law-Calculator/script.js b/Calculators/Beer-Lambert-Law-Calculator/script.js
@@ -0,0 +1,21 @@
+function calculateAbsorbance() {
+    const epsilon = parseFloat(document.getElementById('epsilon').value);
+    const concentration = parseFloat(document.getElementById('concentration').value);
+    const length = parseFloat(document.getElementById('length').value);
+
+    if (isNaN(epsilon) || isNaN(concentration) || isNaN(length)) {
+        document.getElementById('result').innerText = "Please enter valid numbers for all fields.";
+        return;
+    }
+
+    const absorbance = epsilon * concentration * length;
+
+    document.getElementById('result').innerText = `Absorbance (A): ${absorbance.toFixed(2)}`;
+}
+
+function clearInputs() {
+    document.getElementById('epsilon').value = '';
+    document.getElementById('concentration').value = '';
+    document.getElementById('length').value = '';
+    document.getElementById('result').innerText = '';
+}
diff --git a/Calculators/Beer-Lambert-Law-Calculator/style.css b/Calculators/Beer-Lambert-Law-Calculator/style.css
@@ -0,0 +1,100 @@
+body {
+    font-family: 'Roboto', sans-serif;
+    background-image: url('assets/background.webp');
+    background-size: cover;
+    margin: 0;
+    padding: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    height: 100vh;
+    color: #fff;
+}
+
+.calculator {
+    background: #1565c0;
+    padding: 30px;
+    border-radius: 10px;
+    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
+    width: 450px;
+    text-align: center;
+}
+
+h1 {
+    font-size: 28px;
+    margin-bottom: 20px;
+    color: #ffeb3b;
+}
+
+.formula {
+    font-size: 16px;
+    margin-bottom: 10px;
+    color: #ffcc80;
+}
+
+.constant {
+    font-size: 14px;
+    margin-bottom: 10px;
+    color: #bbdefb;
+}
+
+ul {
+    text-align: left;
+    margin: 10px 0 20px;
+    padding-left: 20px;
+    color: #bbdefb;
+    font-size: 14px;
+}
+
+label {
+    font-size: 14px;
+    margin: 10px 0 5px;
+    display: block;
+    text-align: left;
+    color: #bbdefb;
+}
+
+input {
+    width: calc(100% - 20px);
+    padding: 10px;
+    margin-bottom: 15px;
+    font-size: 16px;
+    border: 1px solid #ccc;
+    border-radius: 5px;
+}
+
+.buttons {
+    display: flex;
+    justify-content: space-between;
+}
+
+button {
+    background-color: #29b6f6;
+    color: white;
+    padding: 12px 20px;
+    border: none;
+    border-radius: 5px;
+    font-size: 16px;
+    cursor: pointer;
+    margin: 5px;
+    flex: 1;
+}
+
+button:hover {
+    background-color: #0288d1;
+}
+
+button:last-child {
+    background-color: #f44336;
+}
+
+button:last-child:hover {
+    background-color: #d32f2f;
+}
+
+.result {
+    margin-top: 20px;
+    font-size: 18px;
+    font-weight: bold;
+    color: #fff;
+}
diff --git a/calculators.json b/calculators.json
@@ -233,6 +233,12 @@
         "link": "./Calculators/Bayes-Theorem-Calculator/index.html",
         "source": "https://github.com/Rakesh9100/CalcDiverse/tree/main/Calculators/Bayes-Theorem-Calculator"
     },
+    {
+        "title": "Beer Lambert Law Calculator",
+        "description": "Calculates absorbance, concentration, or path length using the Beer-Lambert Law.",
+        "link": "./Calculators/Beer-Lambert-Law-Calculator/index.html",
+        "source": "https://github.com/Rakesh9100/CalcDiverse/tree/main/Calculators/Beer-Lambert-Law-Calculator"
+    },
     {
         "title": "Beta Function Calculator",
         "description": "Calculate the ß value of two numbers in a single click!",