"Flatterland" is a mathematical adventure novel written by Ian Stewart, published in 2001. It serves as a sequel and homage to Edwin A. Abbott's classic work "Flatland," which is a satirical novella that explores dimensions through the experiences of a two-dimensional shapes' society. In "Flatterland," Stewart expands on the themes of dimensionality and mathematical concepts by introducing a character named Ned, who embarks on a journey through various dimensional spaces.
G 117-B15A is a designation for a specific exoplanet found in the constellation of Cassiopeia. It is known to orbit the star G 117-B15, a white dwarf. This system has garnered interest in the study of planetary formation and evolution, particularly in relation to the characteristics of planets that orbit stars that have undergone significant transformations, such as transitioning from main sequence stars to white dwarfs.
W49B is a well-studied astronomical object, specifically a supernova remnant located in the constellation of Cassiopeia. It is one of the most well-known examples of a supernova remnant that exhibits unique features, such as a mixture of thermal and non-thermal emissions. The remnant is particularly interesting for its association with a massive star that exploded as a supernova, leaving behind a complex structure of gas and radiation.
A Compact Fluorescent Lamp (CFL) is a type of energy-efficient lighting that uses a fluorescent gas to produce light. CFLs are designed to be a more efficient alternative to traditional incandescent bulbs. They use a gas-filled tube that emits ultraviolet (UV) light when an electric current passes through it. This UV light then excites a phosphor coating inside the tube, which emits visible light.
"Crackle tube" can refer to a couple of different concepts, depending on the context. 1. **In the context of television or digital media**: "Crackle" is a streaming service that offers a range of films and television shows, including original programming. A "Crackle tube" might informally describe a device or medium used to watch content from Crackle, such as a smart TV or streaming stick.
An electrical ballast is a device used in fluorescent and some other types of lighting systems to regulate the current to the light bulb and provide the necessary voltage to start and operate the lamp. Ballasts play a crucial role in ensuring that the electrical characteristics needed for the lamp's operation are maintained for optimal performance and efficiency.
Luxim Corporation is a technology company known for its development of high-performance lighting solutions. The company specializes in solid-state lighting technologies, particularly focusing on high-intensity discharge lamps and lamps for industrial, commercial, and architectural applications. Luxim is known for its innovation in plasma lighting, which offers higher efficiency, longer lifespans, and improved light quality compared to traditional lighting technologies. Luxim products are often utilized in various sectors, including entertainment, outdoor lighting, and automotive applications.
A metal-halide lamp is a type of high-intensity discharge (HID) lighting device that produces light by passing an electric current through a mixture of gases that include metal halides. These lamps are known for their bright, white light and are often used for applications where high-quality illumination is needed, such as in sports venues, street lighting, and commercial spaces. **Key features of metal-halide lamps include:** 1.
A plasma globe, also known as a plasma ball, is a device that demonstrates the properties of plasma, one of the four fundamental states of matter. The globe typically consists of a clear glass sphere filled with a low-pressure gas, often a mixture of noble gases like neon or argon. At the center of the globe is an electrode that generates high-frequency alternating current electricity. When the device is powered on, the electrode produces high-voltage ionization of the gas within the globe.
A plasma lamp is a type of gas discharge lamp that produces light and visual effects by creating an electric arc through a low-pressure gas, typically noble gases such as neon or argon, inside a glass or clear plastic globe. The most well-known design is the plasma globe, which features a central electrode surrounded by a glass sphere filled with gas, and produces colorful, tendril-like patterns of light when a high-frequency voltage is applied.
Aquamid is a soft tissue filler made from a hydrophilic gel that is primarily composed of 97.5% water and 2.5% polyacrylamide. It is used in aesthetic medicine for facial contouring and volume restoration, as well as in certain medical applications for treating specific conditions like defects or irregularities in soft tissue. Aquamid is known for its durability, as it can provide long-lasting results compared to some other filler options.
The Foundation series is a seminal work of science fiction written by Isaac Asimov. It consists of a series of stories and novels that originally appeared as separate short stories in magazines and were later compiled into books. The series revolves around the concepts of psychohistory, a fictional science that combines history, sociology, and statistical mathematics to predict the future of large populations. The main premise of the Foundation series is the decline and fall of the Galactic Empire, which encompasses a vast number of planets.
Radiochemists are scientists who specialize in the study of radioactive materials and their chemical properties. They focus on the behavior of radionuclides, which are atoms with unstable nuclei that emit radiation as they decay. Radiochemistry involves the application of chemistry principles to understand and manipulate these materials for various purposes, including: 1. **Nuclear Medicine**: Developing radiopharmaceuticals for diagnosis and treatment of diseases, particularly cancer.
A germicidal lamp is a type of ultraviolet (UV) lamp that emits UV-C light, which has wavelengths typically between 200 and 280 nanometers. This UV-C light is effective at disinfecting surfaces, air, and water by killing or inactivating microorganisms such as bacteria, viruses, and fungi. Germicidal lamps are commonly used in various applications including: 1. **Healthcare Settings**: To sterilize operating rooms, patient rooms, and medical equipment.
A glow switch starter, commonly known as a glow starter or glow plug starter, is an electrical device used primarily in halogen and fluorescent lighting systems to facilitate the ignition of the lamp. It plays a crucial role in ensuring that the lamp starts properly by providing an initial electrical charge needed to ignite the gas within the lamp. In the context of fluorescent lamps, the glow starter works by heating up a small bimetal strip that, when heated, causes the strip to bend and close the circuit.
High-Intensity Discharge (HID) lamps are a type of electric light that generates light by creating an arc between two electrodes in a gas-filled chamber. The gas comprises various elements, which can vary depending on the specific type of HID lamp, and includes substances such as mercury, sodium, or metal halides. HID lamps typically emit a bright, intense light and are known for their efficiency and ability to produce a high lumen output relative to their power consumption.
A Hydrargyrum medium-arc iodide lamp, commonly known as an HMI (Hydrargyrum Medium-Arc Iodide) lamp, is a type of high-intensity discharge (HID) lamp that produces a bright, white light. These lamps use a combination of mercury (hydrargyrum is the Latin name for mercury) and halide salts, specifically iodine, to generate light.
Hydrargyrum quartz iodide is a chemical compound that can also be referred to by its chemical formula, which typically indicates the presence of mercury (hydrargyrum is the Latin name for mercury), quartz, and iodine. This compound can be related to specific applications in fields such as materials science or photonics, particularly in the development of particular types of optical materials or devices.
An induction lamp is a type of lighting that employs electromagnetic induction to produce light. Unlike traditional lamps that typically use filaments or electrodes, induction lamps generate light through a process that excites gas within a sealed bulb, producing a high-intensity discharge. Here are some key features of induction lamps: 1. **Operating Principle**: Induction lamps consist of a gas-filled tube and a coil surrounding it.