Coal cars transport coal from mines to processing centers and power plants. They were historically used in narrow tunnels and were iconic during the Industrial Revolution. Some full-size train cars are also equipped to carry coal. Liquid coal-powered cars were briefly popular in the 20th century but were not environmentally friendly. A coal car is […]
Telogen effluvium is a temporary type of hair loss caused by physiological stresses such as illness or trauma. It causes significant hair loss for about three months, but hair typically grows back without treatment. A doctor can diagnose and treat underlying conditions that may cause long-term hair loss. Telogen effluvium is a type of hair […]
Avocado cream is a Mexican dip used in both sweet and savory dishes. It’s usually green, creamy, and can include herbs and vegetables. It’s made with avocado and a creamy component like sour cream or crema. Avocado cream is a form of guacamole and can be used in desserts like ice cream. Removing the seed […]
Mobile scaffold towers are lightweight and easily movable structures used for decorating, cleaning and maintenance. They are safer than ladders and come in sections that can be rented or purchased. Safety precautions must be taken when using them, especially outdoors, to avoid accidents. Mobile scaffold towers are typically used both indoors and outdoors and are […]
Laser beam machining uses CO2 and YAG lasers to perform functions of conventional milling machines. CO2 lasers are powerful and used for cutting and profiling, while YAG lasers are flexible and used for drilling and engraving. CNC instrumentation transmits tasks to the laser, and industries ranging from automakers to jewelers use laser beam processing on […]
Tic douloureux, or trigeminal neuralgia, causes chronic pain due to pressure on the trigeminal nerve in the head. Pain can be triggered by everyday activities and can be treated with medication or surgery. The upper, middle, and lower branches of the trigeminal nerve provide sensation to different areas of the face. Surgery options include balloon […]
Chilled beams are a cost-effective heating and cooling system for larger buildings. They use a heat exchanger attached to the ceiling with pipes carrying hot or cold water. Chilled beams come in active or passive forms and are different from chilled ceilings. They are energy-efficient, quiet, and low maintenance, but not suitable for rooms with […]
An airspeed indicator measures an aircraft’s speed relative to the outside air, using air pressure measurements. It is part of the pitot static system and is important for safe flight, but does not show speed relative to the ground. An airspeed indicator is an instrument in the cockpit of an airplane or helicopter that tells […]
Belgian buns are sweet, fruit-filled yeast buns that are often topped with lemon curd or cream icing and a cherry. They can be made at home with butter, milk, yeast, sugar, flour, eggs, and sultanas. The dough is kneaded, left to rise, shaped, studded with fruit, and baked for 20 minutes before being topped with […]
A common battery supplies DC power for electronic circuits in various applications. It may include a charger or rectifier to maintain a charge and can use solar panels or generator sets for redundancy. The rechargeable type is usually used, and the Ah capacity is related to the size of the batteries. The positive side of […]
A stepper motor microcontroller controls a stepper motor by giving it instructions on how many steps to turn. It is a small hardware used for embedded applications, and is more energy-efficient and cheaper than other control units. However, it requires careful installation and wiring. A stepper motor microcontroller is a piece of hardware that can […]
South Australia is the fourth largest state in Australia by size and population, with a diverse economy focused on agriculture, mining exports, and manufacturing. Its state emblems include the Sturt’s Desert Pea, Lesser Shrike, Hairy-nosed Wombat, Opal, and Leafy Seadragon. The state is mainly located in the temperate zone and has a coastline of 3,148 […]
Plumbism, or lead poisoning, can affect both adults and children. Symptoms vary based on the amount of lead in the blood and can be mistaken for meningitis in young children. Treatment is available through chelation, but prevention is key by avoiding exposure to lead in homes and products. Plumbism is another word for lead poisoning […]
A tow dolly is an apparatus that connects to a truck to haul trailers, commonly used for shipping and transportation. Trailer dollies provide wheels for trailers and are used to transport small machines. Trailer-mounted drilling rigs are popular in oil-rich parts of the world for quick replacement of malfunctioning rigs. An apparatus that connects to […]
An A-frame hoist is a portable gantry hoist that can be used in various locations. It has two stable legs with an overhead trestle and can be adjusted for different projects. It can lift a variety of objects, but weight limits should be observed. Manufacturers offer different sizes and weight classifications, and custom fabrication is […]
Meditation chairs have become popular in the West, offering support and comfort for longer meditation sessions. They help maintain proper spinal alignment, increase comfort, and provide vital back support. Different chairs are designed to support different postures, and there are various types available, including folding chairs, eco-friendly chairs, and wooden chairs. With many Eastern practices […]
A natural economy is based on exchanging resources rather than financial money, with items valued based on usefulness. In contrast, a financial economy focuses on profit and trading resources for money. Barter is the main form of trade in a natural economy, with resources harvested based on need rather than profit. This leads to a […]
Electronic stability control is a safety system that monitors a car’s handling and prevents the driver from losing control. It combines anti-lock brakes, traction control, and yaw control stability systems. It can reduce the risk of a fatal single-vehicle crash by up to 56%. It is recommended for SUVs, pickup trucks, and large cars, especially […]
A current mirror circuit uses the current flow in one section to regulate the current flow in other sections, typically using bipolar junction transistors. It acts as a current regulator and can produce lower or higher output currents. The use of NPN transistors is reliable due to their diode-like function, but temperature must remain constant […]
Lalibela, a city in northern Ethiopia, is known for its UNESCO World Heritage Site cave churches. Built as a New Jerusalem after the Muslim conquest of Jerusalem, Lalibela’s natural and man-made features are named after Jerusalem’s features. The city was designed as a fortress to provide security for its citizens. Lalibela was once the secular […]
