Code 3 Collectibles was a company known for producing high-quality, collectible die-cast models, particularly focused on emergency vehicles, including fire trucks, police cars, and ambulances. Their products are often notable for their attention to detail and accuracy, appealing to collectors and enthusiasts of emergency services and model vehicles. The company operated primarily in the late 1990s and early 2000s and gained a following among hobbyists for their limited edition releases.
Danbury Mint is a company known for producing and marketing a variety of collectibles, including die-cast model cars, decorative plates, figurines, and other memorabilia. Founded in 1969, the company initially gained recognition for its high-quality, limited-edition items, often related to themes such as classic automobiles, historical events, and popular culture. Danbury Mint products are typically sold through catalogs, online, and direct mail, and many of their items are marketed as collectible gifts.
Estes Industries is a company primarily known for its production of model rockets and rocketry supplies. Founded in 1958 by Vern Estes, the company has played a significant role in promoting the hobby of rocketry and has become a leading manufacturer in the industry. Estes produces a wide range of model rockets, rocket kits, launch systems, and accessories, catering to both beginners and experienced rocketry enthusiasts.
Hawk Model Company is a manufacturer known for producing model kits and hobby supplies, particularly focused on military vehicles, aircraft, and historical figures. The company typically aims to cater to enthusiasts and collectors in the scale modeling community. They may offer a wide variety of products, including plastic model kits, decals, and accessories that allow hobbyists to build and customize their models.
Gene H. Golub was a prominent American mathematician known for his contributions to numerical analysis and linear algebra. He was born on January 28, 1932, and passed away on November 16, 2021. Golub is particularly recognized for his work on algorithms for matrix computations, including the singular value decomposition (SVD) and various methods for solving large-scale linear systems. He was a professor emeritus at Stanford University and made significant contributions to various fields of applied mathematics.
"Normal mode" can refer to different concepts depending on the context in which it is used. Here are a few interpretations: 1. **Physics and Engineering**: In this context, "normal mode" refers to a specific type of oscillation in a system where all parts of the system move in a coordinated way. For example, in mechanical systems, normal modes correspond to the natural frequencies of vibration.
Horizon Hobby is a prominent company that specializes in the design, distribution, and retail of radio-controlled (RC) products, including aircraft, drones, cars, and boats. Founded in 1985, the company has built a strong reputation in the hobby and recreational market, catering to both beginners and experienced hobbyists. Horizon Hobby offers a wide range of products, including ready-to-fly (RTF) models, kits requiring assembly, parts, and accessories.
Kadee is a brand known primarily for its production of model train couplers and related accessories used in the modeling of railroads. The company is particularly noted for its high-quality magnetic couplers that allow for easy connection and disconnection of train cars, simulating the operation of real trains. Kadee's products are popular among model railroad enthusiasts for their durability and reliability.
Louis Marx and Company was an American toy company founded in 1919 by Louis Marx, an immigrant from Eastern Europe. The company gained fame for producing a wide range of toys, particularly during the mid-20th century. It became one of the largest toy manufacturers in the world, known for its innovative and affordable toys, including vehicles, playsets, and action figures. Marx toys were distinguished by their robust construction and engaging designs, often made from metal and plastic.
MTH Electric Trains is a manufacturer of model trains and accessories, primarily in the O gauge and other scales. Founded in 1980 by the late Mike Wolf, MTH (which stands for Mike's Train House) is known for producing high-quality locomotives, rolling stock, and specialized train sets. The company has a strong reputation for innovation in model railroading, offering features like Digital Command System (DCS) technology, which allows for advanced control of trains and their features.
The Golden State Model Railroad Museum is a prominent model railway exhibition located in Richmond, California. It is known for showcasing intricate and detailed model railroad layouts, which replicate real-life railroads and scenes from various eras. The museum features an impressive collection of model trains, landscapes, and structures, and it often includes interactive exhibits that engage visitors of all ages. The museum serves as a hub for model railroad enthusiasts, offering a space for both display and education.
The Historic Railpark and Train Museum, located in Bowling Green, Kentucky, is a heritage museum dedicated to preserving and showcasing the history of railroads in the region. Housed in the former L&N Depot, the museum features a variety of exhibits related to the railroad industry, including historical artifacts, photographs, and stories that highlight the significance of railroads in transportation, commerce, and everyday life.
Joshi's Museum of Miniature Railway is a unique and specialized museum located in India, dedicated to the miniature railways. It showcases an impressive collection of model trains and miniature railway setups, featuring intricate details and craftsmanship. The museum offers visitors a chance to explore the history and evolution of railways through these scaled-down replicas. The collection often includes various models and dioramas that illustrate different themes, landscapes, and railway operations, providing insight into the operational and cultural significance of railways.
In mathematical logic, a first-order theory is a set of sentences (axioms) in first-order logic that describe a particular domain of discourse. Here are some well-known first-order theories: 1. **Peano Arithmetic (PA)**: This theory is used in number theory and consists of axioms that define the properties of natural numbers, including the principles of induction.
The Löwenheim–Skolem theorem is a fundamental result in model theory, a branch of mathematical logic. It describes the relationship between first-order logic, models, and cardinalities (sizes) of structures. There are two versions of the theorem: the downward Löwenheim–Skolem theorem and the upward Löwenheim–Skolem theorem.
Area is a measure of the amount of space contained within a two-dimensional shape or surface. It is typically expressed in square units, such as square meters (m²), square centimeters (cm²), square feet (ft²), and so on. The area can be calculated for various geometric shapes using specific formulas. Here are some common formulas for calculating the area of different shapes: 1. **Rectangle**: Area = length × width (A = l × w) 2.
Colossal statues refer to large-scale sculptures that are significantly larger than life size, often created to honor deities, commemorate historical figures, or serve as symbols of power and grandeur. These statues can be found in various cultures throughout history, and they typically reflect the artistic styles and religious beliefs of the societies that produced them.
7 mm scale, also known as 7mm to 1 foot scale or 7mm scale modeling, is a model scale primarily used in railway modeling. In this scale, 7 millimeters represents one foot in real life. This translates to a scale ratio of approximately 1:43.5. Models created in this scale are often used for modeling narrow-gauge railways and can also be seen in some broader applications like architectural models and dioramas.
The term "2 mm scale" typically refers to a model scale in which 2 millimeters on the model represent a specific distance in the real world, commonly a meter. In model railroading and modeling, 2 mm scale is often associated with a scale of 1:152, meaning that 1 unit of measurement on the model is equivalent to 152 units in real life.
4 mm scale, often referred to as 4 mm to 1 foot scale, is a model scale used primarily in the modeling of railways and related structures. This scale represents a ratio where 4 millimeters on the model equals 1 foot (12 inches) in real life. This scale is commonly used in the UK and is also known as 00 scale (when referring to model railways).