BS 7671 is the British Standard for electrical wiring regulations in the UK. Officially titled "IET Wiring Regulations," it provides guidelines and requirements for the design, installation, inspection, and testing of electrical systems in buildings. The standard is maintained by the Institution of Engineering and Technology (IET) and is updated periodically to reflect technological advancements and safety improvements.

A **good spanning tree** is not a standard term in graph theory, but it can be interpreted in a few different ways depending on the context. Generally, a spanning tree is a subset of a graph that includes all the vertices and is a tree structure without any cycles.

The Gorenstein-Harada theorem is a result in the field of algebraic geometry and commutative algebra, particularly concerning Gorenstein rings and Cohen-Macaulay modules. More specifically, the theorem provides conditions under which a local Cohen-Macaulay ring is Gorenstein.

Graham Oppy is a prominent Australian philosopher known for his work in the philosophy of religion, particularly related to theism and atheism. He has made significant contributions to discussions about the existence of God, the nature of belief, and the arguments for and against theism. Oppy is recognized for his critical analysis of classical arguments for God's existence, such as the cosmological, teleological, and moral arguments. He often emphasizes the importance of philosophical rigor and clarity in debates regarding religious beliefs.

Carl Wilhelm Oseen was a Swedish physicist and mathematician best known for his work in the fields of optics and fluid mechanics. He made significant contributions to the study of electromagnetic waves and is particularly noted for his work on the theory of light scattering. Oseen's work laid foundational concepts in the understanding of light behaviors and interactions with matter.

The Graph Sandwich Problem is a problem in graph theory that involves determining whether a certain graph can be found between two given graphs. More formally, given two graphs \( G_1 \) and \( G_2 \), the problem asks whether there exists a graph \( G \) such that \( G_1 \) is a subgraph of \( G \) and \( G \) is a subgraph of \( G_2 \).

A gunshot wound (GSW) is an injury that occurs when a bullet or other projectile fired from a firearm penetrates the body. The severity of a gunshot wound can vary greatly depending on several factors, including: 1. **The type of firearm**: Different firearms have different calibers and bullet types, which can affect the extent of the injury.

The half-carry flag is a specific bit in the status register of a CPU that is used in certain types of arithmetic operations, particularly in binary-coded decimal (BCD) arithmetic or in low-level operations involving binary numbers. It indicates whether there was a carry from the lower nibble (the least significant 4 bits) to the upper nibble (the next 4 bits) during an addition operation.

IAPWS stands for the "International Association for the Properties of Water and Steam." It is an organization that focuses on the study and the accurate representation of the thermophysical properties of water and steam. Founded in 1968, IAPWS serves as a collaborative platform for researchers and scientists involved in thermodynamics, fluid mechanics, and related fields.

B-theory of time is a philosophical concept in the study of time that posits that the passage of time is not an objective feature of reality, but rather a subjective experience. According to B-theory, all points in time—past, present, and future—are equally real. This theory contrasts with A-theory (or "A-series" of time), which holds that the present moment is uniquely real, while past events are no longer real and future events are not yet real.

Harrie Massey (1916–2004) was a notable British physicist known for his contributions to the fields of atomic and molecular physics, particularly in the areas of scattering theory and the study of ionization processes. He made significant advancements in the understanding of how particles interact, especially in the context of electron scattering. Massey was involved in various research institutions throughout his career and published a substantial number of scientific papers.

The Hausdorff Medal is a prestigious award given by the Hausdorff Center for Mathematics at the University of Bonn, Germany. It is named in honor of the mathematician Felix Hausdorff, who made significant contributions to various areas of mathematics, particularly in topology and set theory. The award is typically given to outstanding mathematicians for their exceptional contributions to the field.

A "shake" is a unit of time that is typically used in nuclear physics and is defined as \(10^{-8}\) seconds, or 10 nanoseconds. The term originated from the idea that the time it takes for a nuclear explosion to produce significant observable effects is on the order of this duration. It is a non-SI unit and is primarily used in contexts related to radiation and nuclear processes, where precise measurements of time intervals in the nanosecond range are often necessary.