Abstract: Hydroelectric generators for harnessing potential energy from liquid flowing from upstream portions of liquid sources to downstream portions of the liquid sources below the upstream portions, the liquid source bounded on its bottom by beds that define side portions. In some examples, hydroelectric generators may include fluid-transmissive conduits defining intake portions extending into the liquid sources, the intake portions defining fluid-transmissive interiors extending below the surface of the liquid source and liquid-permissive intake openings providing an intake fluid path through which liquid from the liquid source may enter the fluid-transmissive interior from the liquid source. Additionally or alternatively, fluid-transmissive conduits may include transmissive portions extending from the intake portions to output ends of the fluid-transmissive conduit.

Abstract: A lighting system comprising a lighting apparatus and a lighting adapter, where the lighting adapter includes a frame, a curved reflector coupled to the frame and having a reflective surface partially enclosing an interior space and defining a focal point within the interior space, a light source disposed at least partially within the interior space and substantially at the focal point of the reflective exterior surface, wherein the light source is electrically wired to allow current to flow from an outside power source into the light source, a pair of endcaps, the endcaps centering the light source substantially at the focal point, and a pair of tombstone sockets, and where the lighting adapter includes a plurality of grooved channels, wherein the grooved channels of the lighting adapter are transversely disposed on each end of a rear-wall member,

Abstract: Hydroelectric generators for harnessing potential energy from a flowing liquid source with a varying surface level. Hydroelectric generators may comprise platforms with buoyancies selected to remain suspended in the liquid source at a selected depth. In some examples, generation units may be fixed to the platform, the generation unit including turbines partially submerged in the liquid source, generators drivingly connected to the wheel, and electrical interfaces connected to the generator, the electrical interface configured to connect to an external power system. In some examples, hydroelectric generators may include one or more anchors connected to the platform. In some examples, generation units may include rotors. In some examples, hydroelectric generators may include projections extending into the liquid source and define channels between the projections.

Abstract: Lighting apparatuses including a first endcap including a first light socket, a second endcap spaced from the first endcap including a second light socket, reflector rotatably attached between the first endcap and the second endcap, the reflector including a reflective surface partially enclosing a reflector interior space and defining a focal point within the reflector interior space. The first light socket and second light socket are collectively configured to support light sources substantially near the focal point. The first endcap and the reflector include complimentarily configured interlocking members.

Abstract: Lighting apparatuses that include a reflector attached to an adjustable support, a reflective surface on the reflector that defines an interior space and a focal point within the interior space, a light source partially disposed within the interior space and positioned substantially near the focal point, wherein the light source is configured to generate light by passing an electrical current through the lighting element. In some examples, the adjustable support defines a flexible stem. In other examples, the adjustable support defines a collection of bars rotatably connected at pivot points.

Abstract: A lighting apparatus including a reflector having a reflective exterior surface partially enclosing an interior space and defining a focal point within the interior space, and a high pressure discharge lamp positioned substantially at the focal point of the reflective exterior surface. In some examples, the high pressure discharge lamp includes an arc tube containing mercury, a metal halide, or sodium. In some examples, the reflective exterior surface extends along a longitudinal axis and curves around the longitudinal axis. In some example, the reflective exterior surface defines an elliptical paraboloid.

Abstract: A lighting apparatus including a reflector having a reflective exterior surface partially enclosing an interior space and defining a focal point within the interior space, and a high pressure discharge lamp positioned substantially at the focal point of the reflective exterior surface. In some examples, the high pressure discharge lamp includes an arc tube containing mercury, a metal halide, or sodium. In some examples, the reflective exterior surface extends along a longitudinal axis and curves around the longitudinal axis. In some example, the reflective exterior surface defines an elliptical paraboloid.

Abstract: A lighting apparatus including a reflector having a reflective surface partially enclosing an interior space and defining a focal point within the interior space, and a filament positioned substantially within the interior space. In some examples, the filament is made substantially of tungsten. In some examples, the reflective surface extends along a longitudinal axis and curves around the longitudinal axis. In some examples, the reflective surface defines an elliptical paraboloid. In some examples, the filament may be placed substantially at the focal point of the reflective surface.

Abstract: A lighting apparatus including a reflector having a reflective exterior surface partially enclosing an interior space and defining a focal point within the interior space, and a high pressure discharge lamp positioned substantially at the focal point of the reflective exterior surface. In some examples, the high pressure discharge lamp includes an arc tube containing mercury, a metal halide, or sodium. In some examples, the reflective exterior surface extends along a longitudinal axis and curves around the longitudinal axis. In some example, the reflective exterior surface defines an elliptical paraboloid.

Abstract: The present invention comprises a method of enhancing illumination by a variety of lamp types through the use of reflective technologies, for example, replacement of expensive high intensity density of mercury vapor lamps with low wattage fluorescent tubes having at least one and in some cases, up to three reflective surfaces for focusing otherwise lost light toward a target illumination area. Further, the placement of light sources at the focal point of said reflective surfaces aids in optimizing the amount of light focused in a desired direction.

Abstract: An electric generating system is provided and consists of a generator mechanically operated by a starter motor in which the generator operates a battery charger to recharge a battery that can operate the starter motor when the starter motor is disengaged from a remote power source.