The New Zealand Rocketry Association (NZRA) is an organization dedicated to promoting and supporting rocketry enthusiasts in New Zealand. It serves as a community for individuals interested in building, launching, and experimenting with rockets, from hobbyist projects to high-power rocketry. The association typically focuses on safety, education, and organizing events such as launches and workshops where members can share knowledge, skills, and experiences related to rocketry.

Radio-controlled (RC) sailboats are remote-controlled models that mimic the design and function of full-sized sailboats. These models are typically powered by the wind, utilizing sails to harness wind energy for propulsion, similar to their full-sized counterparts. Sailing enthusiasts of all ages enjoy RC sailboats for recreational purposes, competitive racing, or as a hobby.

Distributed power, often referred to as distributed generation (DG), is an energy generation approach that produces electricity from many small energy sources rather than from a large, centralized power plant. This can involve various technologies and energy sources, including: 1. **Renewable Energy Sources**: Solar panels, wind turbines, small hydroelectric systems, and biomass can all contribute to distributed power systems.

Digital Command Control (DCC) is a standard for controlling model railroads digitally. Unlike traditional analog control systems, where the power to the tracks is varied to control the speed and direction of trains, DCC allows for more advanced functionalities by sending digital signals to each locomotive. Here are some key features and benefits of DCC: 1. **Individual Control**: DCC allows each locomotive on the same track to be controlled independently.

A list of model railways typically refers to a compilation of various model railways around the world, which can include details such as their themes, scales, and notable features. Model railways can be classified by scale (e.g., N scale, HO scale, O scale), type (e.g., garden railways, indoor layouts), and geographic focus (e.g., miniature representations of specific regions or historical periods).

Train Mountain Railroad is a large-scale model railway located in Chiloquin, Oregon. It is known for being one of the longest miniature railroads in the world, boasting an extensive network of tracks that span over 37 miles. The railroad is designed for the use of ride-on scale model trains, often featuring live steam, diesel, and electric locomotives. Train Mountain serves as a venue for rail enthusiasts to bring their model trains and run them on the extensive layout.

A 1:25 scale model means that the model is 1/25th the size of the actual object it represents. In other words, for every 25 units of measurement of the real object, the model is 1 unit of measurement. This scale is commonly used for a variety of model types, including automobiles, architecture, and dioramas.

A 1:285 scale means that one unit of measurement on a model or representation is equal to 285 of the same units in reality. For example, if you have a model vehicle at a 1:285 scale, 1 inch on the model represents 285 inches in the actual vehicle. This scale is often used in modeling, particularly for military models, buildings, and dioramas, where a smaller scale allows for more compact representation of larger objects or scenes.

A 1:35 scale refers to a scale model where one unit of measurement in the model (such as inches or centimeters) is equivalent to 35 of the same units in the real object. For example, if a model is 1:35 scale, and a real tank is 3.5 meters long, the model would be approximately 10 centimeters (or about 3.9 inches) long.

The Strengthen the Arm of Liberty Monument is a notable statue located in Fayetteville, Arkansas. It was created by sculptor Charles A. Wright and was dedicated in 1910. The monument commemorates the Confederate soldiers from Washington County who fought in the Civil War. The statue depicts a soldier representing the Confederacy, and it serves as a historical reminder of the region's involvement in the Civil War.

A heptadecahedron is a type of polyhedron that has 17 faces. The term "heptadec-" comes from the Greek "hepta" meaning seven and "deca" meaning ten, thus literally translating to "seventeen." Heptadecahedra can have various configurations based on how the faces are arranged and the types of faces used.

The compound of five great cubicuboctahedra is a complex geometric structure formed by the intersection of five great cubicuboctahedra, which are Archimedean solids characterized by their combination of squares and octagons in their faces. In geometry, a compound involves two or more polyhedra that intersect in a symmetrical way. The great cubicuboctahedron itself is a convex polyhedron featuring 8 triangular faces, 24 square faces, and symmetrical properties.

The compound of four octahedra is a geometric arrangement or polyhedral compound formed by combining four octahedra in a specific way. When arranged symmetrically, these octahedra can interpenetrate each other, creating a complex shape that often highlights the symmetrical and aesthetic properties of polyhedra. In three-dimensional space, an octahedron is a shape with eight faces, each of which is an equilateral triangle.

A compound of twenty triangular prisms would be a three-dimensional geometric figure composed of twenty individual triangular prisms combined in some way. A triangular prism itself consists of two triangular bases and three rectangular lateral faces. To create a compound of twenty triangular prisms, you can arrange or connect these prisms in various configurations. The specific arrangement and properties of the compound would depend on how the prisms are oriented and connected.

Disphenocingulum is a genus of extinct reptiles that belonged to the group known as parareptiles. These creatures are characterized by their unique skull structure and dental patterns. Disphenocingulum lived during the late Permian period, which was around 260 million years ago. Fossils of Disphenocingulum have been found, providing insights into the diversity of early reptiles and their evolutionary history.

The elongated pentagonal cupola is a type of convex polyhedron and a member of the Archimedean solids. Specifically, it is formed by elongating a pentagonal cupola through the addition of two hexagonal faces on opposite sides.

The elongated pentagonal gyrobirotunda is a type of convex polyhedral compound classified within the broader category of Archimedean solids. It belongs to a group of shapes known as the gyrobirotunda, which are characterized by their symmetrical arrangement of pentagonal and triangular faces. Here are some key characteristics of the elongated pentagonal gyrobirotunda: 1. **Faces**: This solid has a combination of faces, specifically including pentagons and triangles.

The great triakis octahedron is a type of Archimedean solid, which is a category of convex polyhedra characterized by having regular polygonal faces and uniform vertex arrangements. Specifically, the great triakis octahedron can be described as follows: 1. **Face Composition**: It consists of 24 equilateral triangular faces and 8 regular quadrilateral faces. The triangular faces are arranged around the edges of the octahedral structure.