|
Pyotr Ufimtsev
Pyotr Yakovlevich Ufimtsev (sometimes also Petr; russian: Пётр Я́ковлевич Уфи́мцев) (born 1931 in Ust-Charyshskaya Pristan, West Siberian Krai, now Altai Krai) is a Soviet/ Russian physicist and mathematician, considered the seminal force behind modern stealth aircraft technology. In the 1960s he began developing equations for predicting the reflection of electromagnetic waves from simple two-dimensional and three-dimensional objects. Much of Ufimtsev's work was translated into English, and in the 1970s American Lockheed engineers began to expand upon some of his theories to create the concept of aircraft with reduced radar signatures. Biography Ufimtsev was born into a peasant family in the village of Ust-Charysh Pristan (N 52.40, E 83.66), in the Altai region, of the RSFSR of the former USSR. At the age of three his father was repressed by the regime and later died in a gulag. In 1949 Ufimtsev finished school and entered the physics-math departme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ust-Charyshskaya Pristan
Ust-Charyshskaya Pristan (russian: Усть-Чарышская Пристань) is a rural locality (a '' selo''), founded in 1773, and the administrative center of Ust-Pristansky District of Altai Krai Altai Krai (russian: Алта́йский край, r=Altaysky kray, p=ɐlˈtajskʲɪj kraj) is a federal subjects of Russia, federal subject of Russia (a krai). It borders clockwise from the west, Kazakhstan (East Kazakhstan Region and Pavlodar ..., Russia, located along the Ob River in the West Siberian Plain, south of Barnaul. Population: References Rural localities in Ust-Pristansky District Tomsk Governorate Populated places established in 1773 {{UstPristansky-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Waves
In physics, electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field, which propagate through space and carry momentum and electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays. All of these waves form part of the electromagnetic spectrum. Classically, electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields. Depending on the frequency of oscillation, different wavelengths of electromagnetic spectrum are produced. In a vacuum, electromagnetic waves travel at the speed of light, commonly denoted ''c''. In homogeneous, isotropic media, the oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave. The position of an electromagnetic wave within the electromagnetic spectrum can be characterized by either it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
