+An [Interferometer](/wiki/interferometer) is an instrument that uses the [interference](/wiki/interference) of waves to make precise measurements. It splits a [wave](/wiki/wave) into two or more paths, then recombines them, revealing subtle differences in their journey. This principle is vital for fields from astronomy to engineering.
+## See also
+- [Light](/wiki/light)
+- [Optics](/wiki/optics)
+- [Wavelength](/wiki/wavelength)
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