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31 Posts in this encyclopedia categoryRadar interference
Radar interference describes the disruption of a radar system that leads to incorrect detection or display of objects. Such disturbances can be caused by environmental factors, technical faults, or intentional interference signals.
Radio Transceiver
Radio transceivers are communication devices used for wireless transmission of voice and data information via radio waves. They play a crucial role in long-distance communication, especially in fields like military, police, emergency services, but also in outdoor activities and amateur radio. Radio transceivers enable reliable communication in situations where other communication methods fail or are impractical.
Radium
Radium is a chemical element with the symbol Ra and atomic number 88. It is a highly radioactive, silvery-white metal that belongs to the alkaline earth metals group. Radium is known for its intense radioactivity and was historically used in various applications before its health hazards were fully recognised.
Rain Poncho
Rain ponchos are versatile and lightweight garments designed to protect the wearer from rain. They are usually made from water-repellent materials and designed to be easily pulled over regular clothing. Rain ponchos are especially popular for outdoor activities, camping, hiking, and even military operations, as they keep not only the wearer but often also gear such as backpacks dry.
Rapid response team
A rapid response team (RST) is a tactical disaster relief unit that can provide rapid and flexible assistance in the event of major disasters, accidents with multiple casualties, or other emergencies. The RST consists of specially trained emergency personnel who can be on-site in a very short time to provide initial medical care, support for those affected, technical assistance, or logistical support.
Ratchet Ring
A ratchet ring, also known as a ring spanner with ratchet function, is a tool used for tightening and loosening bolts and nuts. These tools are especially useful in situations where space is limited and continuous rotation is not possible. Ratchet rings are indispensable in the automotive industry, mechanical engineering, and many craft applications.
Reef Knot
The reef knot is a simple but extremely important knot used in firefighting and many other fields. It is mainly used to join two ropes of equal thickness or to securely close sacks and packages. The reef knot is quick to tie, holds reliably, and can be easily undone, making it one of the most frequently used knots in firefighting.
Rescue Collapse
A rescue collapse describes the failure or breakdown of a rescue system or rescue personnel during an operation. This can happen due to physical exhaustion of the helpers, insufficient resources, or unforeseen dangers at the scene. A rescue collapse endangers both the affected persons and the rescue forces.
Rescue Firefighting Vehicle
The rescue firefighting vehicle, or HLF, is a multifunctional fire engine designed for both firefighting and technical rescue operations. It is one of the most important vehicles in a fire department’s fleet and is deployed in a wide range of incidents, including fires, traffic accidents, and technical rescues. The HLF combines standard firefighting equipment with additional tools for technical assistance.
Rescue Kit
A rescue kit is a specialised set of equipment used in technical rescue operations, especially in road traffic accidents. It consists of various hydraulic tools, such as cutters, spreaders, and rescue cylinders, which are used to free trapped persons from vehicles or other confined spaces. The rescue kit is an indispensable tool for firefighters to act quickly and effectively in rescuing trapped individuals.
Rescue Pickaxe
A rescue pickaxe, also known as a recovery pickaxe or emergency pickaxe, is a specialised tool used in rescue operations and recoveries. These pickaxes are indispensable for firefighters, mountain rescue teams, and emergency responders, as they enable a variety of tasks such as breaking through debris, opening access points, and stabilising structures.
Rescue Shears
A rescue shear is a hydraulic tool used in technical rescue operations to free people from vehicles or other trapped situations. It is an essential instrument for firefighters and rescue personnel to quickly and efficiently create access and free injured persons.
Rescue Vehicle
A rescue vehicle (RW) is a fire service vehicle specifically equipped for technical assistance. It is primarily used in operations that require heavy technical equipment, such as traffic accidents, building collapses, or other technical rescue missions. The RW is part of the standard equipment of many fire departments and is versatile due to its extensive equipment.
Respiratory Protection Assembly Point
Respiratory protection, also known as RP, is a fundamental measure to protect firefighters from hazardous gases, smoke, and oxygen deficiency. Breathing apparatus are used to enable personnel to breathe safely in dangerous environments, ensuring their health and safety.
Respiratory Toxins
Respiratory toxins are substances that cause harmful effects when inhaled and can lead to severe poisoning or even death. These toxins can be released during fires and pose a significant risk to the respiratory system and overall health. The most common respiratory toxins include carbon monoxide, carbon dioxide, hydrogen cyanide, ammonia, and chlorine.
RGSt
Decisions of the Reichsgericht in criminal matters, abbreviated as RGSt, refers to a collection of important criminal law rulings by the former German Reichsgericht. These rulings have played a significant role in legal history and are still used today as references in legal education and practice. They offer valuable insights into the application of law and jurisprudence of the Reichsgericht.
Rhenium
Rhenium is a chemical element with the symbol Re and atomic number 75. It is a rare, silvery-white, heavy transition metal known for its high melting point, density, and strength. Rhenium is used in various industrial and technological applications, especially in high-temperature alloys and as a catalyst.
Rhodium
Rhodium is a chemical element with the symbol Rh and atomic number 45. It is a rare, silvery-white transition metal belonging to the platinum group of elements. Rhodium is known for its high corrosion resistance, high melting point, and excellent catalytic properties. It is used in various industrial and technological applications, especially as a catalyst and in jewellery making.
Riot Gear
Riot Gear, also known as police equipment for use during riots, includes a range of protective and operational tools designed to handle violent crowds, demonstrations, and uprisings. This gear is used by police and security forces to ensure their own safety, prevent violence, and maintain control over chaotic situations.
Riveting
Riveting is a mechanical process for permanently joining components. In this process, rivets, which serve as fasteners, are driven through the materials to be joined and then deformed to create a strong connection. Riveting is used in numerous industries and applications, including construction, aerospace, automotive, and household appliances.
Rolling
Rolling is a forming process in which materials such as metals, plastics, and paper are rolled into the desired shape and thickness. The material is passed between rotating rollers that exert pressure and deform it. This process is widely used in the metalworking, papermaking, and plastics processing industries to produce sheet metal, foil, and profiles.
Rollover
The term "rollover", also known as smoke ignition, describes a dangerous phenomenon that can occur during fires. It refers to the sudden ignition of flammable gases that have accumulated in a room. These hot gases rise and gather beneath the ceiling. If conditions are right, the gases ignite abruptly, creating a fireball that rapidly spreads through the space. Rollover is considered a precursor to a flashover and poses a serious risk to emergency responders.
Rotting
Rotting refers to the biological process by which organic material is broken down by microorganisms such as bacteria and fungi. This process leads to the decomposition and degradation of the material, often resulting in unpleasant odors and a change in texture and color. Rotting commonly occurs in food, wood, plants, and other organic materials and is usually a sign of the material's decay and unusability.
Rubber
Rubber is an elastic polymer derived from natural or synthetic sources. It is known for its high elasticity, durability, and versatility, making it an important material in numerous industrial and everyday applications. Natural rubber is obtained from the latex of the rubber tree, while synthetic rubber is produced by polymerizing various monomers.
Rubidium
Rubidium is a chemical element with the symbol Rb and atomic number 37. It belongs to the group of alkali metals and is a soft, silvery-white metal that is highly reactive. Rubidium is used in various industrial and technological applications, especially in electronics and research.
Rust Formation
Rust formation is a corrosion process in which iron or steel reacts with oxygen and moisture, forming iron oxide, commonly known as rust. This process is one of the most common types of corrosion and can significantly affect the structure and strength of metal objects. Rust formation occurs both in industry and everyday life and requires suitable protective measures to prevent damage to metal structures.
Rust Protection
Rust protection includes various measures taken to prevent or slow down the corrosion of metals, especially iron and steel. Corrosion, which occurs when metal comes into contact with oxygen and moisture, can cause significant damage to structures, vehicles, and machinery. Proper rust protection is therefore crucial to extend the lifespan of metal objects and maintain their functionality.
Rust Removal
Rust removal is an essential process to extend the lifespan of metal surfaces and maintain their aesthetic and functional quality. Rust occurs when iron or steel corrodes due to oxygen and moisture, which can weaken the metal, make it unsightly, and impair its functionality. There are various methods of rust removal, depending on the type and extent of the corrosion.
Ruthenium
Ruthenium is a chemical element with the symbol Ru and atomic number 44. It is a rare, silvery-white transition metal belonging to the platinum group. Ruthenium is known for its hardness, corrosion resistance, and good catalytic properties. It is used in various industrial and technological applications, particularly in electronics, catalysts, and jewellery manufacturing.