A design of a new quartz thermostate is described. It controls: 1) The temperature of the sample from ambient temperature to 1270 K, 2) The pressure of the atmospheric air or other gases within the range from $133,3°10^{-6}$ ...

A concept of improving the transient process in an on-off temperature control unit. The power fed to the heating element is gradually increased or decreased in response to a sawtooth waveform from a generator controlled ...

The temperature changes of current - voltage and current - time characteristics having been investigated, data are used to define the type of conductivity and to determine the activation energy of the charge carriers. ...

Bound and scattering states ot the hydrogen atom are described using Lie algebras of groups 0/4/, 0/3,1/, 0/4,1/. Comparison with the results of the geometric quantization is made.

Two descriptions of the energy levels and states of a quantum harmonic oscillator are discussed: the method using its symmetry group SU/n/ and the "geometric quantization" method. The operator creating arbitrary n,l,m - ...

This article contains the results of theoretical computations which serve a model of the ordering of magnetic moments in the NiFeAlO[4] spinel lattice on the base of molecular field theory assuming the crystal anisotropy. ...

The temperature dependences of the electric permeability, electric conductivity. Seebeck coefficient and current - voltage characteristics for the solid solution (Pb[0,92]La[0,08]) (Zr[0,65]Ti[0,55) O[3], were studied. ...

The connection between quantum-mechanical unitary transtormations and canonical transformations of classical mechanics is discussed in the special case of nonhomogeneous symplectic transformations. The discussion is based ...

The principle of operation of a silicon controlled rectifying regulator of temperature, driven by impulses, is discussed. The main design data of a prototype and its parameters are given.

Kolejny czwarty zeszyt Prac Fizycznych składa się z dwu części. Część I zawiera prace naukowe zespołu metodycznego i teoretycznego. W części II prezentowane są prace związane z tematyką zespołu doświadczalnego. Członkowie ...