An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

<< < Boh fir > >>

Number of Results: 23 Search : first
first-order spectrum
  بیناب ِ رایه‌ی ِ نخست   
binâb-e râye-ye naxost

Fr.: spectre du premier ordre   

An optical spectrum, produced by a diffraction grating, in which the difference in path length of light from adjacent slits is one wavelength.

first; → order; → spectrum.

Kepler's first law
  قانون ِ نخست ِ کپلر   
qânun-e naxost-e Kepler (#)

Fr.: première loi de Kepler   

Planets move in elliptical paths, with the Sun at one focus of the ellipse.

Kepler; → first; → law.

Newton's first law of motion
  نخستین قانون ِ نیوتنی ِ جنبش   
naxostin qânun-e Newtoni-ye jonbeš (#)

Fr.: première loi newtonienne de mouvement   

A body continues in its state of constant velocity (which may be zero) unless it is acted upon by an external force.

Newton; → first; → law; → motion.

<< < Boh fir > >>