Nodal lines refer to lines or pathways that pass through nodal points or nodes. They play a crucial role in many scientific and engineering disciplines, including physics, mathematics, and electronics. Synonyms for nodal line include zero-line, null line, nodal plane, nodal surface, and node line. These terms are often used interchangeably to describe the intersection of two or more standing waves, or the point at which the amplitude of a wave is zero. Nodal lines are also a critical component of Fourier analysis, allowing complex waveforms to be expressed as simple combinations of sine and cosine functions.