GRB 790305b is a significant astronomical event classified as a gamma-ray burst (GRB). It was detected on March 5, 1979, by the Earth-orbiting Vela satellites, which were originally designed for monitoring nuclear test ban compliance. This GRB is notable because it was one of the first gamma-ray bursts to be identified and cataloged.

Gamma-ray bursts (GRBs) are among the most energetic events in the universe, producing intense bursts of gamma-ray radiation. The mechanisms behind their emission can generally be divided into two main categories: **prompt emission** and **afterglow emission**. Here’s an overview of each category along with the primary models associated with them. ### 1. Prompt Emission The prompt emission is the initial burst of gamma-rays that occurs over a time scale of seconds to minutes.

Gamma-ray bursts (GRBs) are among the most energetic events in the universe, producing intense bursts of gamma radiation that can last from milliseconds to several minutes. They are generally classified into two main categories: long-duration GRBs and short-duration GRBs, and each is thought to have different progenitors, or sources. 1. **Long-duration GRBs**: These events typically last more than two seconds and are associated with the deaths of massive stars.

The Giant GRB Ring, or Giant Gamma-Ray Burst Ring, refers to a vast structure identified in the cosmic microwave background (CMB) radiation that is thought to be associated with a series of gamma-ray bursts (GRBs). These bursts are among the most energetic events in the universe, typically resulting from catastrophic astrophysical processes, such as the collapse of massive stars or mergers of compact objects like neutron stars.

The study of gamma-ray bursts (GRBs) has a fascinating history that reflects the development of astrophysics and observational technology over the past several decades. Here's an overview of the key milestones in the research of gamma-ray bursts: ### 1. **Discovery (1967)** The story of GRBs began in the late 1960s when the Vela satellites, designed to detect nuclear explosions as part of the 1963 Nuclear Test Ban Treaty, recorded unexpected and powerful gamma-ray emissions.

A list of gamma-ray bursts (GRBs) typically includes the recorded events of these powerful explosions in the universe, characterized by their intense gamma-ray emissions. GRBs are among the brightest and most energetic phenomena observed, and they can be categorized by their duration and characteristics into two main types: short-duration GRBs (lasting less than 2 seconds) and long-duration GRBs (lasting more than 2 seconds).

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.

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 strobe light is a type of light source that emits periodic flashes of light, typically at a high frequency. These flashes can be very brief, lasting just a few milliseconds, and can occur rapidly, producing a blinking effect that can be visually striking. Strobe lights are commonly used in various applications, including: 1. **Photography**: Strobe lights are used in studios to provide a brief burst of light, which can help freeze motion and enhance image quality.

General equilibrium theory is a branch of economics that studies how supply and demand in multiple markets interact simultaneously and how they achieve an overall equilibrium in an economy. General equilibrium theorists analyze how changes in one part of the economy can affect the entire system, taking into account the interdependencies among different markets.

"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.

A Crookes tube is an early type of vacuum tube that played a pivotal role in the development of modern electronics and our understanding of electricity and radiation. Invented by the British scientist William Crookes in the late 19th century, it consists of a sealed glass tube from which most of the air has been removed, creating a vacuum. The tube typically has two electrodes: a cathode (negative electrode) and an anode (positive electrode).

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.

A fluorescent lamp is a type of electric light that works by passing an electric current through a gas, which emits ultraviolet light. This ultraviolet light then excites a phosphor coating on the inside of the glass tube, causing it to emit visible light. Fluorescent lamps are commonly used in various applications due to their energy efficiency and longer lifespan compared to traditional incandescent bulbs.

Fluorescent lamps are a type of electric lamp that produces light by the excitation of gas. They work by passing an electric current through a gas (typically argon or neon) which produces ultraviolet (UV) light. This UV light then interacts with a phosphor coating on the inside of the lamp, causing it to emit visible light. Fluorescent lamps are widely used for their energy efficiency and longer lifespans compared to incandescent lamps.

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 Teltron tube is a type of specialized glass vacuum tube used in educational and experimental physics to demonstrate various principles, particularly in the field of electricity and magnetism. These tubes typically contain low-pressure gases, which become ionized when a high voltage is applied across electrodes within the tube. As a result, visible cathode rays (or electron streams) are produced, allowing students and researchers to observe phenomena such as the behavior of electrons in electric and magnetic fields.

A list of sulfur lamp installations would typically refer to locations or instances where sulfur lamps, which are high-intensity light sources, are used. These lamps emit light by passing an electric current through sulfur vapor, creating a bright source of illumination that is often used in various applications such as outdoor lighting, streetlights, and specialized industrial uses. However, detailed lists of specific installations could vary widely and might not be readily available in public domains.

Low-pressure discharge refers to a type of gas discharge where the pressure within the discharge system is relatively low. This phenomenon occurs in various contexts, such as in the functioning of certain types of gas discharge lamps, plasma sources, and other electrical discharge devices. In low-pressure discharge systems, the gas atoms or molecules are spaced farther apart than in higher-pressure environments, allowing them to be ionized more easily when an electric field is applied.