Personal Equation


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personal equation

[′pər·sən·əl i′kwā·zhən]
(science and technology)
A systematic observational error due to the characteristics of the observer; the uncertainty in a reading made by an observer may be ascertained by a statistical analysis of the observer's readings.

Personal Equation

 

a term used in astronomy to designate observational (measurement) errors resulting from the physical properties of the observer, that is, personal errors. Personal equations are of the nature of systematic errors. They may vary to some degree under the influence of variations in the physical state of the observer, the conditions of observation, the method of recording the values being measured, and other factors. The magnitude of the personal equation in astronomical observations also depends on the brightness of the observed celestial object and the speed with which its image crosses the telescope’s field of view. The existence of personal equations was discovered at the end of the 18th century, and they were first studied by F. Bessel and V. Ia. Struve. A detailed study of them was conducted in the 1870s by N. Ia. Tsinger.

References in periodicals archive ?
I've tried to approach both my work and my personal equations with utmost positivity and goodness," said Qureshi, who turned 32 on Saturday.
it's so hot" weather, and spend hours discussing about the personal equations of two politicians and how bad was Kejriwal's decision to quit the Delhi government.
The decision would have depended as much on personal equations as on political calculations.
Not only did he support the Manmohan Singh-led United Progressive Alliance (UPA) governments at the Centre in 2004 and 2009, but also milked his personal equations with the then Congress supremo, Sonia Gandhi, to bag the politically important Railways Ministry in 2004.
While shooting, we would just get into the characters, leaving our personal equations aside.
"Let not personal anger be allowed to become euphemism for support to the BJP," Singhvi said and sought to tell Karat that "personal equations should not be brought into the picture for supporting the BJP."
His expectation for a solid script could prove elusive in an industry such as Bollywood that prides itself in having a lucid script and hiring actors based on the lead actors' personal equations with the actors who are seeking supporting roles.

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