Abstract: A motor powered by linear actuators comprises a base plane in which a plurality of linear actuators (2, 2?, 2?, 20) operate by reciprocating along respective lines of action (X, X?, X?), an elastic conversion member (3, 30) which is adapted to move in the plane and suitable to be connected to a drive shaft (S). The linear actuators (2, 2?, 2?, 20) are operatively connected with the conversion member (3, 30) for converting the reciprocating motion of the linear actuators (2, 2?, 2?, 20) into a substantially continuous motion of the conversion member (3, 30). The motor also comprises stationary constraint means (4, 40) which are adapted to selectively interact with the conversion member (3, 30) to locally deform it and/or promote sliding and movement thereof the plane about a predetermined axis or in a predetermined direction in response to the action of the linear actuators (2, 2?, 2?, 20).

Abstract: In an analytical photometer, in particular multi-channel, for the simultaneous analysis of a multiplicity of samples, the light source provided is a flash tube for producing light pulses in which a permanent preionization discharge is maintained and the light energy is derived by optical fibres to be sent to optical systems where the beam is divided into an analysis beam which travels through the sample and a reference beam, both finally delivered to photodetectors. Both the divided beams pass through identical filtering systems for selection of a narrow spectral band of relevance for analytical purposes.