Abstract:
A digital light deflection system is disclosed where a group of alternating electrode pairs and prisms emersed in Kerr cell liquid is contained in a ceramic cylinder sealed at either end by a ceramic disc provided with a light-pervious window. The ceramic enclosure may be in the shape of a circular cylinder or may be a rectangular cylinder made up of rectangular plates sealed at their edges.
Abstract:
A pressure transducer comprising a tubular support which is closed on one end by a semiconductor device for converting mechanical stresses into electrical signals. Current supply conductors for the semiconductor device extend through ducts in the tube wall. These current supply conductors preferably consist of cemented metal wires.
Abstract:
A method of manufacturing a heat exchanger for exchanging heat between helium flows in a temperature range below 2K, comprising two end plates having inlet and outlet apertures, and a stack of very thin foils arranged between the end plates with passageways that extend transverse to the planes of the foils and separate ducts in the planes of the foils which communicate with the passageways. During manufacture the foils are attached with supports provided between foils, which supports are removed by means of a rinsing liquid after the foils have been soldered to each other.
Abstract:
A method of manufacturing a flat waveguide in which a hollow core of a soft metal is introduced into a steel tube, this assembly is then provided with two parallel flat faces by flattening the tube with the core on two sides, after which the core is removed by etching. By using a hollow core, elongation, contraction and tearing of the wall of the tube is prevented. The flat tube obtained by the method according to the invention has a smooth and regular inner surface and a uniform wall thickness.
Abstract:
A getter for a gas discharge tube having mercury vapor in which the getter which is active at room temperature is separated from the mercury-containing atmosphere by porous sintered bodies.
Abstract:
A method of adjusting two metallic electrodes surfaces in an electric discharge tube at a given distance from each other in which an intermediate layer of non-metallic material, e.g. carbon or a metal oxide, is provided between the surfaces of the electrodes which are placed in abutting relationship. The electrodes are then heated to a temperature of about 780*C to connect them with supporting members and cooled. Due to different coefficients of expansion of the electrodes and supporting members, the electrodes separate and the intermediate layer is then removed.