Artykuły naukowe (WMFT): Recent submissions
Now showing items 521-540 of 767
-
Elektryczne i fotoelektryczne własności monokryształów $PbMg_{1/3}Nb_{2/3}O_3$ w niskich temperaturach
(1984)Electric and fotoelectric properties of monocrystals $PbMg_{1/3}Nb_{2/3}O_3$ in low temperatures are discussed. It is found that in the region of low temperatures electric properties of $PbMg_{1/3}Nb_{2/3}O_3$ are to large ... -
Wpływ domieszek $La_2O_3$ na własności elektryczne niobianu sodu $NaNbO_3$
(1984)The temperature changes of electric conductivity and of electric permittivity were investigated for the $NaNbO_3$ and $NaNbO_3$ + /0,1%, 0,2%, 0,25%, 0,3%, 0,4%, 0,5% and 1% mol $La_2O_3$/ ceramics. Obtained data were ... -
Otrzymywanie ferroelektrycznych ceramik o dużej gęstości
(1984)The method of hot pressing permits to obtain the ceramics of high density. It consist in simulate neons application of high temperature and pressure on charge made of pressed powder. The authors elaborated several devices ... -
Magnetyczne związki o strukturze ilmenitu : konstrukcja sieci prostej i odwrotnej
(1984)This paper deals with the structural data of all known magnetic compounds of ilmenite structure. The parameters of the crystallographic and magnetic rhombohedral cells, also for the reciprocal lattice are compared. The ... -
Badanie ekranowania magnetycznego jąder [23]Na w związkach typu NaXO[3] metodą magnetycznego rezonansu jądrowego
(1984)The magnetic shielding of [23]Na nuclei in NaNO[3], NaClO[3], NaBrO[3] was investigated theoretically and experimentally. The theory of the magnetic shielding based on the perturbation theory approach of Ramsey was used. ... -
Potencjały cylindrycznie i sferycznie niezmienniczych pól Yanga-Millsa
(1984)A general definition of symmetries of gauge fields is proposed and a method developed for constructing symmetric fields for an arbitrary gauge group. This method was used to find SU(2) (and SU(3)) Yang-Mills fields ... -
Rola fizyki teoretycznej w kształceniu nauczycieli fizyki
(1984)Some thoughts concerning the role of theoretical physics in educating the teachers of physics are presented by the authors of the paper. They evaluate the importance of theoretical physics in the university syllabi and ... -
Poprawka relatywistyczna do przekroju czynnego na rozpraszanie neutronów przez jon paramagnetyczny
(1984)The relativistic correction is derived for the general formula of the cross section for magnetic scattering of thermal neutrons by paramagnetic ion, obtained by Lovesey for nonrelativistic approximation. -
Metody obliczania przekroju czynnego na rozpraszanie niespolaryzowanych neutronów przez substancje paramagnetyczne
(1984)This article contains analysis and comparison of different methods of the cross section calculation for the magnetic scattering of thermal neutrons by paramagnetic ion (Trammell method, Lovesey method, Stassis method, ... -
Początki nauki rysunku technicznego w Polsce
(1983)In paper is tried to show the evolution of teaching the engineering drawing in polish schools and to explain whether the youngs, finishing the elementary and middle schools, were prepared in the range of engineering ... -
Problem równowagi statycznej napędu przy momentach bezwładności zależnych od drogi
(1983)There are some cases when inertia of given driving system is not constant. The conditions of stable collaboration of driving motor with driven mechanism with constant inertia at steady- state are well known. But there ... -
Wpływ austenitu szczątkowego na utwardzenie warstwy wierzchniej konstytuowanej w procesie tarcia tocznego z poślizgiem
(1983)On the base of microhardness and hardness measurements changes in the hardening of the superficial layer of samples subjected to rolling-sliding friction in a range of Hertz stresses of 300÷1400MPa were determined. There ... -
Własności elektryczne warstw powierzchniowych metali
(1983)The influence of the boundary between metal and dielectric on the electric properties of the metal surface layers has been shown. The changes of the dielectric permittivity, specific resistivity and the work function are ...