List of cycles

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This article does not deal with types of bicycles, for that see Bicycle#Types and Category:Cycle types.

This is a list of recurring cycles. See also Index of wave articles, time, and pattern.

Time and calendar cycles[edit]

Main article: Time cycles

Atomic clock - Calendar - Chinese calendar - Computus - Diwali - Ephemeris time - Hertz - Intellectual history of time - Julian date - Season

Planetary cycles[edit]

Astronomical cycles[edit]

Astronomy - CNO cycle - Eclipse cycle - Eclipse - Full moon cycle - Galactic year - Great Year - Lunar phase - Mesoamerican calendars - Metonic cycle - Milankovitch cycles - Mira - Moon - Nutation - Orbit - Orbital period - Saros cycle - Sothic cycle - Secularity - Sunspot - Tide

Climate and weather cycles[edit]

Animal migration - Avalanche - Carbon cycle - Climate change - Climate change and agriculture - Climate model - Climate oscillation - Clock of the Long Now - Ecology - El Niño/La Niña - Endometrium - Environmental geography - Global cooling - Global warming - Historical temperature record - Ice age - Transhumance - Milankovitch cycles - Monsoon - Pleistocene - Season - Sunspot - Tide - Timeline of meteorology - 1500-year climate cycle

Geological cycles[edit]

Age of the Earth - Mass extinction cycles - Climate change - Earthquake cycle

Organic cycles[edit]

Agricultural cycles[edit]

Agricultural cycle - Carbon cycle - Climate change and agriculture - Crop rotation - Fertile Crescent - Harvest - Nitrogen cycle - Organic farming - Season - Soil degradation - Sustainable industries - Water cycle

Biological and medical cycles[edit]

Alternation of generations - Beta oxidation - Bioelectricity - Biological pest control - Biorhythm - Bipolar disorder - Cardiopulmonary resuscitation - Calvin–Benson cycle - Cell cycle - Chronobiology - Citric acid cycle - Circadian rhythm - Clinical depression - Digestion - Ecology - Feedback - Life cycle - List of biochemistry topics - Marine biology - Menstrual cycle - Neurofeedback - Non-Hodgkin lymphoma - Organic farming - Polymerase chain reaction - Soil degradation - Stomach cancer - Triage - Urea cycle - Zygote

Brain waves and cycles[edit]

Bioelectricity - Circadian rhythm - Consciousness - Electroencephalography - Neurofeedback - Persistent vegetative state - Sjögren's syndrome - Sleep

Physics cycles[edit]

Cyclic process - Carnot cycle - Double-slit experiment - Dynamic theory of gravity - Physics of music - Resonance - Sonoluminescence - Speed of light - Sunspot

Mathematics of waves and cycles[edit]

Almost periodic function - Amplitude modulation - Amplitude - Beat - Chaos theory - Cyclic group - Diffraction - Doppler effect - Eigenstate - Eigenvalue - Fibonacci sequence - Fourier series - Frequency domain - Frequency spectrum - Hamiltonian (quantum mechanics) - Harmonic oscillator - Huygens–Fresnel principle - Longitudinal wave - Mechanical wave - Navier–Stokes equations - Partial differential equation - Periodic function - Permutation - Phase (waves) - Physics of music - Power spectrum - Signal - Sine wave - Spectrum of an operator - Translational symmetry - Transverse wave - Wave equation - Wave–particle duality - Wave - Waveform

Electromagnetic spectrum[edit]

Absorption spectroscopy - Anders Jonas Ångström - Astronomical spectroscopy - Astronomy - Black body - Blazar - Bremsstrahlung - Caesium - Cherenkov radiation - Color - Diffraction - Digital signal processing - Direct-sequence spread spectrum - Dispersion (optics) - Eigenstate - Eigenvalue - Electromagnetic radiation - Electromagnetic spectroscopy - Electromagnetic spectrum - Electromagnetism - Emission line - Emission spectrum - FM broadcasting - Frequency domain - Frequency hopping - Frequency spectrum - Gamma-ray burst - Hamiltonian (quantum mechanics) - History of radio - Hue - Isotope - Light - Optical brightener - Particle in a spherically symmetric potential - Piezoelectricity - Power spectrum - RADAR - Radio frequency - Radio - Radiocommunications Agency - Redshift - SETI - Spectrogram - Spectrometer - Spectroscopy - Spectrum analyzer - Sunyaev–Zel'dovich effect - Supernova - Telecommunication - Timbre - Very high frequency - Visible light - Visible spectrumWhite noise

Sound waves[edit]

Acoustic theory - Acoustics - Aerodynamics - Amplitude - Anemometer - Audio feedback- Beat (acoustics) - Bugging - Cherenkov radiation - Cold fusion - Compressibility - Delay line memory - Diffraction - Doppler effect - Echo sounding - Electronic filter - FTIR - Krakatoa - Loudspeaker - Mach number - Microphone - Ossicles - Pan pipes - Parabolic microphone - Phonetics - Phonon - Piezoelectricity - Psychoacoustics - Sawtooth wave - Shock wave - SID - Sonar - Sonic boom - Sonoluminescence - Soundproofing - Sound recording - Sound - Speech processing - Speed of sound - Sperm whale - Square wave - Subsonic - Subtractive synthesis - Synthesizer - Telephone - Transmission line - Triangle wave - Wave drag - Waveform

Miscellaneous cycles[edit]

Economic and business cycles[edit]

Business cycle - Inflation / Recession - Monetary policy - Virtuous circle and vicious circle - Kitchin cycle - Juglar cycle - Kuznets swing

Music and rhythm cycles[edit]

Harmonics - Interval cycle - Musica universalis - Music theory - Physics of music - Ring cycle - Rhythm - Song cycle

Religious, mythological, and spiritual cycles[edit]

Astrology - Mantra - Numerology - Pratītyasamutpāda - Samhain - Sexagenary cycle - Surya

Social and cultural cycles[edit]

Dynastic cycle - Kondratiev wave - Social cycle theory

Military and war[edit]

War cycles

Literature[edit]

Literature cycle - Play cycle - Sonnet cycle