Таджикистан – Энциклопедия на таджикском языке КИТОБАМ

PRINSPI GYuIGENSU FRENEL, usuli taqribii halli masalaho oid ba pahnshavii mavjho, makhsusan mavjhoi rushnoist. Tarifash: dar yak nuqtai fazo, ki ba on dar lahzai muayyan mavje rasidaast, dar navbati khud manbai mavjhoi kuravii elementari meshavad. Ihotagiri in mavjhoi nav dar lahzai digari vaqt sathi mavjiero tashkil medihad. Fronti mavji boshad, …

PRIZMATOID (az prizma va yunoni lidos — shakl), bisyorruyaest, ki du ruyaaash (a s o s h o i Prizmatoid) dar hamvorihoi paralleli voqe gardida, ruyahoi boqimondaash az sekunjaho 6 trapetsiyaho iboratand; yak tarafi sekunjaho va har du asosi trapotsiyaho tarafhoi aso­si Prizmatoid meboshand.  

PREDIKAT (az lotini praedlcatum — guftashuda), ba manii mahdudash — khosiyati predmeti judogona (masalan, «odam budan»), ba manii vaseash — munosibat, yane khosiyati yakchand predmet (masalan, «kheshu aqrabo bu­dan»). Dar mantiq funksiyai propozitsionali, yane ifodai doroi istilohhoi nomuayyan (tagyiryobanda) – ro guyand: dar surati intikhobi manihoi konkreti istilohhoi mazkur chun …

PRIZMAHOI OPTIKI, prizmaest az moddahoi shaffof (shisha, kvarts va gayra). Prizmahoi optiki se khel meshavand; prizmahoi spektri (baroi omukhtani hodisahoe, ki bo dispersiyai rushnoi aloqamandand), prizmahoi inikoskunanda (dar sistemahoi optiki baroi tagyir dodani nur is­tifoda meshavand) va prizmahoi polyarizatsioni. Nig. Dispersiyai rushnoi, Inikosi rushnoi, Polyariza­tsiya.

PRINSIPI D’ALAMBER, yake az prinsiphoi asosii dinamika ast. Tarifash: agar ba quvvahoi ba nuqtahoi sistemai mekhaniki tasirkunanda va quvvahoi reaksiyai bandhoi mekhaniki quvvahoi iner­siyaro zam kunem, on goh sistemai quvvahoi muvozinatshuda ba vujud meoyad. Zimin Prinsipi D’Alamber dar halli masalahoi dinamika usulhoi odditarini statikaro istifoda burdan mumkin megardad. In prinsipro …