Abstract: A communication system for communicating spoken speech, based on switching on and off a visible or infrared light source in a pattern corresponding to the spoken speech. The communication system provides for rapid retransmission/rebroadcast of messages received from other communication systems, to allow communication over a longer range than would otherwise be possible, or between two points not along a line of sight. The system may include a light source also used (at the same time) for providing illumination, such as a light source that is part of a lightbar mounted on a vehicle.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a periphery member 22, a central member 24 and a nanocrystalline plated face plate 26. The periphery member (22) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The face plate (26) is preferably composed of a non-metal material plated with a nanocrystalline material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a periphery member 22, a central member 24 and a face plate 26. The periphery member (22) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The face plate (26) is preferably composed of a titanium alloy material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a main body (22), a central member (24) and a mass member (25). The Mass member (25) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The main body (22) is preferably composed of a titanium alloy material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx, and a low center of gravity.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a periphery member 22, a central member 24 and a face plate 26. The periphery member (22) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The face plate (26) is preferably composed of a titanium alloy material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a periphery member 22, a central member 24 and a face plate 26. The periphery member (22) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The face plate (26) is preferably composed of a titanium alloy material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx.

Abstract: The iron golf club head (20) of the present invention is preferably composed of three main components: a periphery member 22, a central member 24 and a face plate 26. The periphery member (22) is preferably composed of a high density material such as a nickel-tungsten alloy. The central member (24) is preferably composed of a lightweight, non-metal material. The face plate (26) is preferably composed of a titanium alloy material. The iron golf club head (20) preferably has high moments of inertia Izz and Ixx.