An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 9 Search : inertial
inertial
  لختی‌ناک، لختی‌مند   
laxtinâk, laxtimand

Fr.: inertiel, d'inertie   

Of or relating to inertia.

From → inertia + → -al.

Laxt, adj. of laxti, → inertia

inertial force
  نیروی ِ لختی‌ناک، ~ لختی‌مند   
niru-ye laxtinâk, ~ laxtimand

Fr.: force inertielle   

A force arising from the → acceleration of an observer's → frame of reference.

inertial; → force.

inertial frame
  چارچوب ِ لختی‌ناک، ~ لختی‌مند   
cârcub-e laxtinâk, ~ laxtimand

Fr.: référentiel galiléen   

inertial reference frame.

inertial; → frame.

inertial mass
  جرم ِ لختی‌ناک، ~ لختی‌مند   
jerm-e laxtinâk, ~ laxtimand

Fr.: masse inertielle   

The mass of a body as determined from the acceleration of the body when it is subjected to a force that is not due to gravity.

inertial; → mass.

inertial motion
  جنبش ِ لختی‌ناک، ~ لختی‌مند   
jonbeš-e laxtinâk, ~ laxtimand

Fr.: mouvement inertiel   

Motion free of any force, with constant velocity.

inertial; → motion.

inertial oscillation
  نوش ِ لختی‌ناک، ~ لختی‌مند   
naveš-e laxtinâk, ~ laxtimand

Fr.: oscillation inertielle   

1) A periodic motion of a particle that moves, free from external forces, over the surface of a rotating sphere, such the Earth. Inertial oscillations result from the → Coriolis force. For example, a hockey puck launched on a big enough lake in the northern hemisphere would turn to the right (east) and eventually loop back to nearly the initial point (actually west of that point). The time it takes for the huckey puck to return can be computed with the → Coriolis frequency.
2) Meteo.: An anticyclonic (clockwise) rotation in the northern hemisphere, with the Coriolis force providing the → centripetal acceleration with period of 2π/f, where f is the Coriolis frequency. The opposite should occur in the southern hemisphere.

inertial; → oscillation.

inertial reference frame
  چارچوب ِ بازبرد ِ لختی‌ناک، ~ ~ لختی‌مند   
cârcub-e bâzbord-e laxtinâk, ~ ~ laxtimand

Fr.: référentiel galiléen   

A → reference frame or coordinate system in which there are no accelerations, only zero or uniform motion in a straight line. According to the special theory of relativity, it is impossible to distinguish between such frames by means of any internal measurement.

inertial; → reference; → frame.

local inertial frame
  چارچوب ِ لختی‌ناک ِ محلی، ~ لختی‌مند ِ ~   
cârcub-e laxtnâk-e mahali, ~ laxtimand-e ~

Fr.: référentiel inertiel local   

A coordinate system or frame of reference defined in the vicinity of the Earth in which Newton's first law of motion is valid; that is, a non-rotating and non-accelerating reference frame.

local; → inertial; → time.

non-inertial frame
  چارچوب ِ نالختی‌ناک، ~ نالختی‌مند   
cârcub-e nâlaxtinâk, ~ nâlaxtimand

Fr.: référentiel non inertiel, ~ non galiléen   

Any frame of reference in which the law of inertia does not apply, such as in accelerating and rotating frames. For example, the Earth is a non-inertial frame because it is rotating about its axis. But the rotation is so slow that the associated acceleration is negligible compared to other accelerations commonly encountered in everyday life. However, the non-inertial nature of the Earth appears in, e.g., the → Coriolis effect. → inertial reference frame.

non-; → inertial; → frame.