Kosmos 1 Biorhythm Calculator
According to believers in biorhythms, a person's life is affected by rhythmic biological cycles which affect one's ability in various domains, such as mental, physical, and emotional activity. These cycles begin at birth and oscillate in a steady sine wave fashion throughout life; thus, by modeling them mathematically, a person's level of ability in each of these domains can be predicted from day to day.
Most biorhythm models use three cycles: a 23-day "physical" cycle, a 28-day "emotional" cycle, and a 33-day "intellectual" cycle. Although the 28-day cycle is the same length as the average woman's menstrual cycle and was originally described as a "female" cycle (see below), the two are not necessarily in any particular synchronization. Each of these cycles varies between high and low extremes sinusoidally, with days where the cycle crosses the zero line described as "critical days" of greater risk or uncertainty.
In addition to the three popular cycles, various other cycles have been proposed, based on linear combination of the three, or on longer or shorter rhythms.
Charting biorhythms for personal use was popular in the United States during the 1970s; many places (especially video arcades and amusement areas) had a biorhythm machine that provided charts upon entry of date of birth. Biorhythm programs were a common application on personal computers; and in the late 1970s there were also handheld biorhythm calculators on the market, the Kosmos 1
Size (approx):70mm x 140mm x 27mm (w,h,d)
Weight 116g excluding batteries
This 1977 Kosmos 1 Biorythym calculator was the property of Film Editor Peter Boita.
Peter Boita worked as a professional Film Editor from the late 1940's until the late 1980's working on such diverse films as:
Carry On Segeant
This advanced Biorythym calculator, soft case and instructions were his personal property and was purchased in the late 1970's and was very kindly donated by his son Peter Boita Jnr.
This exhibit has a reference ID of CH24545. Please quote this reference ID in any communication with the Centre for Computing History.