The term "Optic equation" does not refer to a specific, universally recognized equation in optics. Instead, it may refer to several key equations and principles used in the field of optics, which is the study of light and its behavior. 1. **Lens Maker's Equation**: This equation relates the focal length of a lens to the radii of curvature of its two surfaces and the refractive index of the lens material.

Proof by infinite descent is a mathematical proof technique that is particularly effective in certain areas, such as number theory. It is based on the principle that a statement is true if assuming its negation leads to an infinite sequence of cases that cannot exist in practice. The idea can be summarized as follows: 1. **Assumption of Negation**: Start by assuming that there exists a solution (or an example) that contradicts the statement you are trying to prove.

The Holyland Model of Jerusalem is a highly detailed scale model of the city of Jerusalem, representing its landscape and architecture at a specific point in history. Typically, the model depicts Jerusalem as it was during the Second Temple period, around 66 AD. This period is significant in Jewish history, as it was during this time that the Second Temple stood before its destruction by the Romans in 70 AD.

Hinged dissection is a method in geometry that involves cutting a two-dimensional shape into pieces that can be folded or hinged around common points, allowing the pieces to reconfigure into another shape without overlapping. The concept is often illustrated using paper cutouts, where the cuts create "hinges" at specific points, enabling the pieces to pivot or swing into place. A classic example of hinged dissection is transforming a square into a triangle or vice versa.

Unix is a powerful operating system that has had a significant impact on the development of modern computing. Its history can be traced back to the late 1960s and early 1970s and is marked by a number of key events and innovations. ### Origins in the 1960s - **1965**: The Multics project, an ambitious attempt to create a time-sharing operating system, began at MIT, Bell Labs, and General Electric.

ASK Group, also known as ASK Investment Managers, is an Indian financial services company primarily focused on asset management and investment advisory services. Established in 2008, the group manages a range of mutual funds and offers various investment solutions to its clients, including high net worth individuals (HNWIs) and institutional investors. The core philosophy of ASK Group revolves around long-term wealth creation through disciplined investment practices, research-driven strategies, and a strong focus on risk management.

Discrete and Computational Geometry is a branch of mathematics and computer science that focuses on the study of geometric objects and their relationships, as well as the algorithms used to process and analyze these structures. It combines elements of combinatorial geometry, which deals with arrangements and properties of geometric objects, with computational geometry, which involves the development of algorithms to solve geometric problems.

The Disk Covering Problem is a combinatorial optimization problem related to covering a set of points in a multidimensional space using a minimal number of disks (or circles in 2D). The main goal is to determine the smallest number of disks of a given radius needed to cover all points in a specified area or space.

Doll manufacturing companies are businesses that design, produce, and sell dolls for various purposes, including play, collection, and decoration. These companies may create a wide range of dolls, including: 1. **Fashion Dolls**: Characterized by adult-like features and often associated with fashion and style, such as Barbie. 2. **Baby Dolls**: Designed to resemble infants and are often used for pretend play by young children.

Edward George Bowen may refer to a number of individuals, but one notable person with this name is a significant figure in the field of science. Edward George Bowen (1911-2018) was a British physicist known for his work in experimental physics, particularly in the areas of ionospheric research and cosmic rays. He made important contributions to our understanding of the Earth's atmosphere and was involved in various scientific organizations throughout his career.

Wooden dolls are handcrafted toys made primarily from wood and are often used as playthings for children or as decorative items. These dolls can vary widely in design, size, and purpose, but they typically feature articulated limbs and painted or carved facial features. Historically, wooden dolls have been made in various cultures around the world, often reflecting local traditions, attire, and craftsmanship. In addition to being toys, they have sometimes served as cultural artifacts, educational tools, or collector's items.

An action figure is a posable toy figure, often representing a character from movies, television shows, comic books, or video games. Typically made of plastic, action figures are designed to resemble a specific character and often come with accessories, such as weapons or vehicles, to enhance playability. They can vary in size, detail, and articulation, with some being highly detailed collector’s items while others are designed more for play by children.

Egli-Figuren, often referred to in English as "Egli figures" or "Egli curves," are a type of geometric figure used primarily in descriptive geometry and engineering drawing. They are named after Swiss architect and artist Hans Egli, who developed a method for representing three-dimensional forms in two-dimensional drawings. Egli figures serve to depict the spatial relationship between different components or systems, making complex structures easier to understand and visualize.

A haunted doll is a doll that is believed to be possessed by a spirit, ghost, or supernatural entity. The concept often originates from folklore and urban legends, where people claim that certain dolls have exhibited eerie behavior, such as moving on their own, changing expressions, or even communicating with their owners. The fascination with haunted dolls has been popularized through various media, including books, movies, and television shows.