Bessel function
Optics
Aperture (computer memory)
Spiral (railway)
Bessel beam
Beam (structure)
Numerical aperture
Physics
Division (mathematics)
Interference (communication)
Diffraction
Concentric
Phase (matter)
Wavelength
Geometry
Mathematics
Mathematical analysis
Channel (broadcasting)
Arithmetic
Electrical engineering
Acoustics
Engineering
Quantum mechanics
