Chronopedia

range

  • (of entrainment) Range of frequencies within which a self sustained oscillation can be entrained by a Zeitgeber.

reference-point

  • See phase.

refractoriness

  • Temporal insensitivity to a Zeitgeber.

rho-ρ

  • Rest time.

rhythm

  • Periodic recurrence of (an) event(s); not synonymous with cycle.

scotophase

  • Dark time.

seasonal

  • See annual.

semi-lunar

  • (cycle) Firstly: event(s) occurring every 14.76 days, the syzygic interval between extreme positions of the synodic cycle (full and new moon), also reflected in amplitude of semi diurnal tides (spring/neap tide cycle). Secondly, as intervals of 13.66 days, when the moon crosses the equator, twice a sidereal month, effecting diurnal tides.

sidereal

  • (month) Or tropical month: cycle of moon around the earth relative to a distant star in 27.32 days.

subjective

  • (day/night) Phase of the free running rhythm in constant conditions, corresponding to day (night) time in light-dark conditions.

synchronization

  • State in which two or more oscillations have the same frequency due to mutual or unilateral influences (referring both to ìentrainmentî and to ìmaskingî).

synodic

  • (month) Cycle of moon-phases resulting from orbital positions of earth, moon and sun, each 29.53 days.

tau-τ

  • Period of biological rhythm.

thermoperiod

  • (daily) Temperature cycle.

tidal

  • (cycle) In occurrence of semi-diurnal tides (every 12.4 h; syzygic modulation of amplitude), diurnal tides (25.8 h or 23.9 h; phase shifted twice per sidereal month), or more complex mixed tides.

Finder