ideal 1) (n.) ârmân (#), minevâr; 2) (adj.) ârmâni (#), mineyi, minevâr Fr.: idéal 1) (n.) A standard of perfection, beauty, or excellence. M.E. ydeall, from L.L. idealis "existing in idea," from L. → idea. Ârmân "ideal" in Mod.Pers., traditionally "desire; hope; grief," variants
armân, urmân, prefixed from mân, "thought, mind," → idea.
The first element may be related to Av. armaē- "in peace, still; quietly;"
PIE base *er[ə]- "to be still" (cf. Skt. īrmā (adv.) "quiet,
still, being in the same place;" Gk. erôé "calm, peace;" O.H.G. rouwa
"rest"), as in Av. armaē.šad- "sitting quietly,"
armaē.štā- "standing still, stagnant." Therefore, Pers. ârmân
may be related to Av. *armaē.manah- (PIE *ermen-)
"thought in peace, quiet mind." |
ideal fluid šâre-ye ârmâni, ~ minevâr Fr.: fluide idéal An fluid which has no internal friction or → viscosity, and no → resistivity as well if the fluid is a plasma. |
ideal gas gâz-e ârmâni, ~-e minevâr Fr.: gaz idéal Theoretical gas assumed to consist of perfectly elastic molecules of negligible volume and mutual attraction force. Also called → perfect gas. |
ideal gas law qânun-e gâz-e ârmâni, ~ ~ minevâr Fr.: loi des gaz parfaits An → equation of state that relates pressure (P), temperature (T), and volume (V) of an ideal or → perfect gas: PV = nRT, where n is the number of → moles of gas present and R is the → universal gas constant. Equivalently: PV = NkT, where N is the number of atoms of gas present and k is → Boltzmann's constant. |
ideal MHD condition butâr-e MHD-ye ârmâni Fr.: MHD idéale Magnetohydrodynamics of a plasma with very large (infinite) conductivity. In this limit, Ohm's law reduces to E = -v x B, where E represents electric field, B magnetic field, and v the fluid velocity. → ideal; → magnetohydrodynamics (MHD); → condition. |
idealism minebâvari Fr.: idéalisme Any one of a variety of systems of philosophical thought, which would make the ultimate reality of the Universe expressible or intangible only in terms of idea in mind, rather than in terms of matter in space. |