+Aliasing is a digital illusion where a continuous signal's true frequency is misidentified as a lower one when sampled too slowly. This can cause unwanted artifacts, like jagged lines in [Digital Image](/wiki/digital_image) or the wagon-wheel effect in video, a fundamental challenge in [Signal Processing](/wiki/signal_processing).
+## See also
+- [Sampling](/wiki/sampling)
+- [Nyquist Rate](/wiki/nyquist_rate)
+- [Anti-aliasing](/wiki/anti-aliasing)
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