Abstract: The present invention relates to a novel method and apparatus which can provide continuous monitoring of the oxygen content of a gas over an indefinite period of time and at a minimal cost.In the novel apparatus of the present invention, a light source and a light sensitive detector are disposed within the atmosphere to be measured, and a polymeric film formed from a manganese tertiary phosphine polymer complex is deposited between the light source and the detector. As oxygen pressure increases or decreases a change in color intensity of the film takes place which controls passage of light from the light source to the detector. The detector in turn is suitably connected to an audio and/or visual warning device and/or a recorder which will provide the desired form of warning.

Abstract: Method and apparatus which can provide continuous monitoring of the partial pressure of one or more gases in an atmosphere or feed stream, over an indefinite period of time and at a minimal cost. The method and apparatus of the present invention operates by monitoring the change in frequency of a piezoelectric element which has been coated with a film formed from manganese tertiary phosphine polymer complex. As the polymer absorbs or releases gas the frequency of the piezoelectric device will be altered.

Abstract: A method of generating electrical and magnetic fields in salt water marine environments using an elongated dimensionally stable flexible electrode (30) having a current carrying inner portion (31) in an outer protective and electrically conductive sheath (33) formed of ruthenium dioxide or iridium oxide. A layer of titanium cladding (33) may be provided on the inner current carrying portion (31) for carrying the outer sheath (33). The anode electrode is utilized for generating electrical current, such as for use in developing magnetic fields in salt water marine environments, preferably as an element of a sweep cable device having a floatation means around which one or more electrodes are helically wound.

Abstract: A method for depositing a micron-size metallic film on a transparent substrate by thermal deposition employing a focused visible laser. The method includes the step of positioning the substrate in a gas cell containing a metal bearing gaseous compound. A nucleation layer is formed on a surface of the substrate by either shining an ultraviolet light on the substrate surface or by heating the substrate to a temperature which is less than the temperature at which the molecules of the gaseous compound decompose. Next, a laser which may be visible or near infrared is focused onto the substrate to provide localized heating of the area of the substrate to which the beam is incident. Molecules of the gaseous compound thermally decompose on the heated area to deposit a metal film thereon.