A litre (or liter) is a unit of volume in the metric system. It is commonly used to measure liquids and gases. One litre is defined as the volume of a cube that has sides of 10 centimeters (cm), which is equivalent to 1,000 cubic centimeters (cm³) or 1 decimeter cubed (dm³). The litre is also equal to 0.001 cubic meters (m³).
A tonne (also spelled "tonne" and abbreviated as "t") is a metric unit of mass equal to 1,000 kilograms, or approximately 2,204.62 pounds. It is commonly used around the world for measuring large quantities of weight, particularly in contexts such as shipping, construction, and environmental science. The tonne is part of the International System of Units (SI) and is commonly used in countries that have adopted the metric system.
Torr is a unit of pressure that is defined as 1/760 of an atmosphere. It is named after the Italian scientist Evangelista Torricelli, who is credited with the invention of the barometer. One torr is approximately equal to 133.322 pascals (Pa), which is the SI unit of pressure. The torr is often used in the fields of physics and engineering, particularly in cases where very low pressures are involved, such as in vacuum applications.
Acoustic resonance technology refers to the use of sound waves and their interactions with materials or structures to achieve certain effects or functionalities. This technology leverages the principles of resonance, where an object vibrates at specific frequencies to amplify sound waves or create specific acoustic conditions. Here are some key aspects of acoustic resonance technology: 1. **Mechanism**: Resonance occurs when an external frequency matches the natural frequency of an object or system, causing it to vibrate with greater amplitude.
National Motor Freight Classification (NMFC) is a standardized system used in the United States to categorize freight and establish shipping rates for less-than-truckload (LTL) freight shipments. Developed by the National Motor Freight Traffic Association (NMFTA), the NMFC assigns a classification number to different types of cargo based on factors such as the item's density, stowability, handling characteristics, and liability. The NMFC classification helps carriers determine the appropriate rates to charge for transporting different types of freight.
Travel time reliability refers to the consistency and predictability of travel times over a given route or network. It is an important concept in transportation planning and traffic management, as it measures the extent to which actual travel times differ from expected travel times. Key aspects of travel time reliability include: 1. **Travel Time Variation**: This considers how travel times can fluctuate based on factors such as time of day, day of the week, weather conditions, and traffic incidents.
İsbike is a bike-sharing program in Istanbul, Turkey. Launched as part of an initiative to promote sustainable transport and reduce traffic congestion, İsbike allows residents and visitors to rent bicycles for short-term use throughout the city. The service operates various docking stations across Istanbul, making it convenient for users to pick up and drop off bikes at strategic locations. This program aims to encourage cycling as an eco-friendly alternative for commuting and exploring the city, thus contributing to a healthier urban environment.
Siemens Mobility is a division of Siemens AG that focuses on transportation solutions and technologies. The division is involved in various projects aimed at improving mobility globally, emphasizing sustainable and efficient solutions for urban and intercity transportation. Some key areas of Siemens Mobility projects include: 1. **Rail Transportation**: Siemens Mobility develops advanced railway systems, including signaling technology, train control systems, and rolling stock (trains). They work on both passenger and freight transport solutions, enhancing efficiency and safety in rail networks.
Engine braking is a technique used to slow down a vehicle by utilizing the engine's resistance rather than relying solely on the vehicle's brake system. When a driver takes their foot off the accelerator pedal, the throttle valve in the engine closes, which reduces the amount of air and fuel entering the engine. This creates a vacuum, which generates resistance against the turning motion of the engine, ultimately slowing down the vehicle.
The Environmental Noise Directive (END) is a piece of legislation established by the European Union aimed at managing and reducing noise pollution in the environment. Formally known as Directive 2002/49/EC, it was adopted on June 25, 2002, and is part of the EU's commitment to protecting its citizens from harmful environmental noise, which can have detrimental effects on health and quality of life.
International Noise Awareness Day is an annual event dedicated to raising awareness about the effects of noise pollution on health and well-being. It typically takes place on the last Wednesday of April each year. The day aims to educate the public about the impact of noise pollution, which can affect sleep, communication, and overall quality of life, as well as contribute to stress and various health issues.
The Lombard effect is a phenomenon in which individuals involuntarily increase their vocal efforts when they are in noisy environments. This adaptation occurs as a natural response to ambient noise, helping individuals to be heard more clearly in conversations. The effect can involve raising the volume of one's voice, altering pitch, or changing speech patterns to enhance audibility. The Lombard effect is observed not only in humans but also in various animal species, indicating a broad biological adaptation to facilitate communication amidst competing sounds.
Loud music refers to sound that is produced at a high volume, often characterized by a strong intensity and amplitude. It can encompass various genres, including rock, pop, electronic dance music (EDM), and hip-hop, among others. Loud music is commonly played in venues such as concerts, clubs, and festivals, where the auditory experience is often amplified to create an energetic atmosphere.
The murder of Jordan Davis refers to the case involving the shooting of an African American teenager named Jordan Davis in November 2012 in Jacksonville, Florida. Davis was killed by Michael Dunn, a white man who became involved in an altercation over loud music coming from a vehicle occupied by Davis and his friends. Dunn, who was parked in a nearby car with his girlfriend, confronted Davis and his friends about the music volume.
The barn is a unit of area used in nuclear and particle physics to quantify the cross-sectional area of atomic nuclei and subatomic particles during interactions. It is not a standard unit of measurement in everyday contexts but is specific to the field of physics. One barn is defined as \(10^{-28}\) square meters, or 100 square femtometers (fm²).
"Trains" can refer to different things depending on the context. Here are a few common interpretations: 1. **Transportation**: Trains are vehicles that run on tracks and are used primarily for transporting goods and passengers. They are powered by locomotives, which can use diesel or electricity.
The term "Autobahn" generally refers to the high-speed highways in Germany. The Autobahn network is famous for sections that have no speed limit, allowing drivers to travel at very high speeds if their vehicles are deemed safe for such conditions. The name "Autobahn" translates to "motorway" in English.
The Abbott-Firestone curve, also known as the Abbott-Firestone profile, is a graphical representation used in surface engineering to describe the roughness characteristics of machined surfaces. It specifically provides a way to analyze the height distribution of surface irregularities, which are crucial for understanding how surfaces interact in applications such as lubrication, wear, and fatigue.
"Gear" can refer to different concepts depending on the context: 1. **Mechanical Gear**: In mechanics, gear refers to a rotating part of a machine with cut teeth or cogs that mesh with another toothed part to transmit torque and rotational motion. Gears are fundamental in various mechanical systems, helping to control speed, direction, and torque. 2. **Clothing and Equipment**: In everyday language, "gear" often refers to equipment or clothing used for a specific activity.
Tribology is the study of friction, wear, and lubrication, and it has various professional organizations dedicated to advancing research, education, and communication in this field. Here is a list of some prominent tribology organizations around the world: 1. **The Society of Tribologists and Lubrication Engineers (STLE)** - Based in the United States, STLE is one of the leading organizations focused on the field of tribology and lubrication.