Radio-controlled (RC) cars are miniature vehicles that are controlled remotely using a transmitter and receiver system. The transmitter is typically a handheld device equipped with controls allowing the operator to steer, accelerate, and brake the vehicle. The receiver is installed in the car and responds to the signals sent from the transmitter, controlling the car's movement.

A radio-controlled (RC) transmitter is a device used to send radio signals to control remote-operated devices, typically models such as cars, boats, airplanes, and drones. The transmitter allows the user to send commands wirelessly through radio frequencies to the receiver located in the RC device, enabling control over its movements and functions.

Radioactive quackery refers to the promotion and use of products or treatments that claim to harness the benefits of radioactivity or radioactive materials without scientific backing or safety considerations. Historically, various individuals and companies have marketed radioactive substances, suggesting that they can cure illnesses or improve health, often exploiting the public's fascination and fear around radiation. This quackery can include items like radioactive water, radium-infused tonics, and other dubious health products.

A beta particle is a high-energy, high-speed electron or positron that is emitted during the radioactive decay of an atomic nucleus, a process known as beta decay. There are two types of beta particles: 1. **Beta-minus (β⁻) particles**: These are electrons emitted from a nucleus when a neutron is transformed into a proton. This process involves the release of an electron and an antineutrino.

Novarossi is an Italian company that specializes in the manufacturing of high-performance nitro engines for radio-controlled (RC) cars, trucks, and other vehicles. Established in the late 1970s, Novarossi has built a reputation for producing quality engines known for their reliability, power, and performance in competitive racing environments. The company also offers a range of performance accessories and related products for RC enthusiasts.

O.S. Engines, also known as O.S. Engines Co., Ltd., is a Japanese manufacturer known for producing high-quality model engine components, primarily for radio-controlled (RC) model aircraft, cars, boats, and helicopters. Founded in 1936, O.S. Engines has established a reputation for innovation and precision in the RC hobby industry. The company specializes in both two-stroke and four-stroke engines, as well as electric motors and associated products. O.S.

A radio-controlled submarine is a model submarine that is operated remotely using a radio control system. These submarines can dive, surface, and maneuver underwater, making them an exciting option for hobbyists and enthusiasts interested in model boating. Key features of radio-controlled submarines include: 1. **Control System**: Typically, they use a transmitter (held by the operator) and a receiver (mounted in the submarine) to facilitate communication.

A remote control animal is a toy or device that mimics the movements and behaviors of real animals and can be controlled from a distance using a remote control. These devices are often designed for entertainment, education, or even companionship. Remote control animals can vary widely in terms of appearance, features, and functionalities. Some common types of remote control animals include: 1. **RC Dogs and Cats**: These toys can perform tricks, walk, bark, or meow, depending on their design.

A remote control locomotive is a type of model train or full-scale train that can be operated wirelessly using a remote control device. These locomotives are equipped with a receiver and other electronic components that allow them to respond to signals sent from the remote control, enabling the operator to control movement, speed, and sometimes other functions like lights and sound. **Types:** 1.

Servo control refers to the use of a servo mechanism to control the position, velocity, or acceleration of an object. A servo typically consists of a motor, a feedback sensor (like a potentiometer), and a control circuit. This system is commonly employed in robotics, automation, and various engineering applications where precise motion control is required.

Radiosensitivity refers to the susceptibility of cells, tissues, or organisms to damage caused by ionizing radiation. This sensitivity can vary widely among different types of cells and tissues. For instance, rapidly dividing cells, such as those found in bone marrow, skin, and the lining of the gastrointestinal tract, tend to be more radiosensitive than slower-dividing cells. In the context of cancer treatment, understanding radiosensitivity is crucial for developing effective radiotherapy strategies.

Secular equilibrium is a concept in nuclear physics and radiochemistry that describes a situation in a system with multiple radioactive isotopes, where the activity (rate of decay) of a parent isotope is equal to the activity of its daughter isotopes over a long period of time. This occurs when the half-life of the parent isotope is much longer than that of its daughter isotopes.

The CD V-700 is a type of radiological survey meter, also known as a Geiger counter, that was developed in the United States during the Cold War era. Specifically, it was designed for detecting and measuring ionizing radiation, including alpha, beta, and gamma radiation. The instrument is part of a series of civil defense equipment intended for use by emergency responders, military personnel, and civil defense organizations to assess radiation levels in the environment, particularly in the event of a nuclear incident.

Cargo scanning refers to the use of various technologies and methods to inspect and analyze cargo containers, vehicles, or shipments for security, safety, and compliance purposes. This process is critical in ports, customs, and logistics to prevent illegal activities such as smuggling, trafficking, and the transport of hazardous materials. Key aspects of cargo scanning include: 1. **Technologies Used**: - **X-ray Scanning**: A common method that uses X-ray imaging to see inside containers.

Civil defense Geiger counters are radiation detection devices specifically designed for use in civil defense and emergency management scenarios. These instruments are utilized to detect and measure ionizing radiation, including alpha, beta, and gamma radiation. Their primary purpose is to help identify radioactive contamination following nuclear accidents, radiological dispersal device (RDD) incidents, or during nuclear warfare events. **Key Features of Civil Defense Geiger Counters:** 1.

Positron emission, also known as positron decay or β⁺ decay, is a type of radioactive decay in which an unstable atomic nucleus emits a positron. A positron is the antimatter counterpart of an electron, possessing the same mass as an electron but with a positive charge. In positron emission, a proton in the nucleus of an atom is transformed into a neutron, accompanied by the release of a positron and a neutrino (an almost massless, neutral particle).

Ekanite is a rare mineral that is primarily composed of zirconium silicate, and it usually contains a significant amount of thorium, which makes it a radioactive mineral. Its chemical formula is often represented as \( \text{ZrSiO}_4 \) with the presence of thorium and other elements. Ekanite is typically found in igneous rocks and is known for its unique properties, including a distinctive green color, which can vary in shade.

An extinct radionuclide refers to a radioactive isotope that was once present in significant amounts in the solar system or on Earth but has now become completely non-existent due to radioactive decay. These isotopes have short half-lives compared to the age of the solar system, leading them to decay completely over time.

Formation evaluation neutron porosity refers to a technique used in petroleum engineering and geophysical studies to assess the porosity of subsurface formations, particularly in reservoir rocks. This method primarily utilizes neutron logs, which are a type of well log that measures the response of hydrogen atoms in the formation.

Inverse beta decay is a process that occurs in certain types of interactions in particle physics, specifically in the context of weak interactions involving neutrinos. In this process, a neutrino interacts with a neutron, resulting in the transformation of the neutron into a proton while effectively producing an electron (or positron, depending on the type of neutrino) in the process.