diff --git a/wave/README.md b/wave/README.md
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+++ b/wave/README.md
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+# Schwebung
+
+_Als Schwebung bezeichnet man den Effekt, dass die Resultierende der additiven Überlagerung zweier Schwingungen, die sich in ihrer Frequenz nur wenig voneinander unterscheiden, eine periodisch zu- und abnehmende Amplitude aufweist._
+
+→ [Wikipedia](https://de.wikipedia.org/wiki/Schwebung)
+
+---
+
+Mittels NumPy werden die Daten für eine interaktive Demonstration von Schwebung bereitgestellt und mit Chart.js visualisiert.
+
+[Aufrufbare Instanz](https://checksch.de/pa-pyscript/wave/wave.html)
diff --git a/wave/plot.js b/wave/plot.js
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+++ b/wave/plot.js
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+const chart = new Chart("chart", {
+ type: "line",
+ data: {
+ datasets: [{
+ label: "Auslenkung",
+ borderColor: "teal",
+ backgroundColor: "teal",
+ }
+ ]
+ },
+ options: {
+ scales: {
+ x: {
+ display: false
+ }
+ }
+ }
+})
+
+function update(x, y) {
+ chart.data.labels = x
+ chart.data.datasets[0].data = y
+ chart.update()
+}
\ No newline at end of file
diff --git a/wave/script.py b/wave/script.py
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+++ b/wave/script.py
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+from pyodide import create_proxy, to_js
+import numpy as np
+import js
+
+# Auslenkung -> ω * t = 2πft
+def deflection(frequency, time):
+ return np.sin(2 * np.pi * frequency * time)
+
+
+# Schwebung -> y(t) = y^(sin(2πft) + sin(2πft)); Annahme gleicher Amplitude (1), keine Phasenverschiebung
+def beat(freq1, freq2, time):
+ return deflection(freq1, time) + deflection(freq2, time)
+
+
+def freq_update(event):
+ document.querySelector("#freqlabel").innerText = freq2.value
+ plot()
+
+
+def plot():
+ beat_deflection = beat(freq1, float(freq2.value), time)
+ js.update(to_js(time), to_js(beat_deflection))
+
+
+freq1 = 440
+freq2 = document.querySelector("#freq")
+
+proxy = create_proxy(freq_update)
+freq2.addEventListener("input", proxy)
+
+sampling_frequency = 1920 / 10 * 4
+seconds = 2
+time = np.linspace(0, seconds, int(seconds * sampling_frequency))
+
+
+plot()
diff --git a/wave/style.css b/wave/style.css
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+body {
+ padding: 1em;
+}
+canvas {
+ background-color: azure;
+ max-width: 1920px;
+ max-height: 800px;
+}
diff --git a/wave/wave.html b/wave/wave.html
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+++ b/wave/wave.html
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+
+
+
+
+
+ Schwebung
+
+
+
+
+
+
+
+ - numpy
+
+
+
+
+
+
+
+
+