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    <button class="btn" id="btn1" onclick="setMode(1)">1: E &lt; Φ</button>
    <button class="btn" id="btn2" onclick="setMode(2)">2: E = Φ</button>
    <button class="btn" id="btn3" onclick="setMode(3)">3: E &gt; Φ</button>
    <button class="btn btn-play" id="btnPlay" onclick="togglePlay()">⏸ Pause</button>
    <button class="btn" id="btnRestart" onclick="restartAnimation()">↺ Replay</button>
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      <div class="panel-header c-red">1. Sub-Threshold (E &lt; Φ)</div>
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      <div class="panel-footer c-red">Trapped (No Emission)</div>
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      <div class="panel-header c-amber">2. Threshold (E = Φ)</div>
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          <text x="0" y="3.5" fill="#ffffff" font-size="10" font-weight="bold" text-anchor="middle">e⁻</text>
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      <div class="panel-footer c-amber">Escapes to Surface: K<sub>max</sub> = 0</div>
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    <div class="panel-box" id="pbox3">
      <div class="panel-header c-violet">3. Above Threshold (E &gt; Φ)</div>
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      <div class="panel-footer c-violet">Emitted: K<sub>max</sub> = hf − Φ</div>
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Why Classical Theory Cannot Explain the Photoelectric Effect

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      <button class="tab-btn active" id="btn-all" onclick="selectMode('all')">Compare Both</button>
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      <text x="432" y="147.6" font-size="12" font-weight="700" fill="#1e3a8a" text-anchor="middle" dominant-baseline="central">Work Function Φ = 4.31 eV</text>

      
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
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</head>
<body>
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</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <title>Wave Theory vs Experimental Reality</title>
  <style>
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        grid-template-columns: 1fr;
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        height: 75px;
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  </style>
</head>
<body>

  <div class="header">
    <h1>Wave Theory vs Experimental Reality</h1>
  </div>

  <div class="tabs">
    <button class="tab-btn active" onclick="setMode(0)">1. Frequency</button>
    <button class="tab-btn" onclick="setMode(1)">2. Time Lag</button>
    <button class="tab-btn" onclick="setMode(2)">3. Electron Energy</button>
  </div>

  <div class="comparison-container">
    
    <div class="col-card col-wave">
      <div class="col-header">
        <span>Wave Theory</span>
        <span>✗ Incorrect</span>
      </div>
      <div class="col-body" id="waveView">
        
      </div>
    </div>

    
    <div class="col-card col-exp">
      <div class="col-header">
        <span>Experiment</span>
        <span>✓ Reality</span>
      </div>
      <div class="col-body" id="expView">
        
      </div>
    </div>
  </div>

  <div class="nav-bar">
    <button class="nav-btn" onclick="prevStep()">◀ Prev</button>
    <span class="nav-indicator" id="stepIndicator">1 / 3 : Threshold Frequency</span>
    <button class="nav-btn" onclick="nextStep()">Next ▶</button>
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                <div class="electron trapped">-</div>
                <div class="electron trapped">-</div>
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                <div class="electron trapped">-</div>
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              <div class="metal-plate">
                <div class="electron trapped">-</div>
                <div class="electron trapped">-</div>
                <div class="electron trapped">-</div>
              </div>
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          badge: `<span class="outcome-badge badge-fail">✗ Predicted: Brightness → Speed</span>`,
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    }

    function nextStep() {
      currentStep = (currentStep + 1) % data.length;
      render();
    }

    function prevStep() {
      currentStep = (currentStep - 1 + data.length) % data.length;
      render();
    }

    render();
  </script>
</body>
</html>

OGS.13.PS.8

Aligned learning resources

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