principal axis


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principal axis

n
1. (General Physics) the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror
2. (General Physics) any of three mutually perpendicular axes about which the moment of inertia of a body is maximum
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Noun1.principal axis - a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted; "in a normal eye the optic axis is the direction in which objects are seen most distinctly"
axis - a straight line through a body or figure that satisfies certain conditions
References in periodicals archive ?
The principal axis of the SAXS pattern indicates the direction in which the polymer has been strained from the cold flow.
The principal axis of the moon's overall shape (the long axis of the lemon) was now separated from the gravity principal axis by about 34 degrees.
The gap between stones 1 and 30 (north-east) is slightly larger than elsewhere in the preserved sections of the sarsen circle, presumably to respect the principal axis and north-eastern entrance, while stone 11 (south) is narrower and shorter than the others perhaps to somehow mark the southern entrance (or it may even have been a later replacement).
At Stonehenge itself, the principal axis appears to be in the opposite direction to midsummer sunrise, towards midsummer sunset, framed by the monument's largest stone setting, the great trilithon," Professor Parker Pearson said
When Hitler learned that Stalin's Palace of the Soviets in Moscow (designed by Iofan to be the tallest building in the world) was to contain a domed hall 160m in diameter, he asked Albert Speer to design a bigger Great Hall to stand at the end of the principal axis in the future Germania, the rebuilt Berlin.
Two subscales, ethnic socialisation and racial socialisation, were identified through principal axis factor analysis.
The attitude of the trunk segment was determined from the principal axis using the point cluster technique (Chaudhari et al.
Walls (2004) conducted a principal axis factor analysis of Quest items and examined the relationships of the resulting three factors to personality dimensions of the NEO-FFI in a sample of university students.

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