Researchers dig deeper into stability challenges of nuclear fusion—with mayonnaise
Mayonnaise continues to help researchers better understand the physics behind nuclear fusion.
Mayonnaise continues to help researchers better understand the physics behind nuclear fusion.
General Physics
6 hours ago
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A new publication in the Journal of Fish Biology compares the diet of fish caught during different expeditions on board icebreaker Polarstern. This provides a more complete picture of their food sources in the central Arctic ...
Plants & Animals
Aug 5, 2024
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Greece's national observatory on Monday said the country had recorded its warmest July on record, weeks after setting a similar milestone for June.
Environment
Aug 5, 2024
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Clouds have for decades been a bugbear for remote sensing of land surface temperature—one of the most important earth system metrics, used in everything from tracking climate change to predicting wildfires. A new approach ...
Earth Sciences
6 hours ago
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High in the arid White Mountains of eastern California stand the gnarled, twisted trunks of ancient bristlecone pines. These slow-growing trees quietly weather the ages; at more than 4,000 years old, some are more ancient ...
Earth Sciences
8 hours ago
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Underwater grasses in the Chesapeake Bay are on the rebound, but environmentalists say more needs to be done to improve the health of the bay and meet upcoming goals.
Ecology
Aug 5, 2024
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More than 120 people died of heatstroke in the Tokyo metropolitan area in July, when the nation's average temperature hit record highs and heat warnings were in effect much of the month, Japanese authorities said Tuesday.
Environment
5 hours ago
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Tropical waters are not as thermally stable as once thought. Ocean waters vary widely in temperature over space and time, but the spatial and temporal resolution of remotely sensed sea surface temperature data is insufficient ...
Environment
8 hours ago
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In physics, temperature is a physical property of a system that underlies the common notions of hot and cold; something that feels hotter generally has the higher temperature. Temperature is one of the principal parameters of thermodynamics. If no heat flow occurs between two objects, the objects have the same temperature; otherwise heat flows from the hotter object to the colder object. This is the content of the zeroth law of thermodynamics. On the microscopic scale, temperature can be defined as the average energy in each degree of freedom in the particles in a system. Because temperature is a statistical property, a system must contain a few particles for the question as to its temperature to make any sense. For a solid, this energy is found in the vibrations of its atoms about their equilibrium positions. In an ideal monatomic gas, energy is found in the translational motions of the particles; with molecular gases, vibrational and rotational motions also provide thermodynamic degrees of freedom.
Temperature is measured with thermometers that may be calibrated to a variety of temperature scales. In most of the world (except for Belize, Myanmar, Liberia and the United States), the Celsius scale is used for most temperature measuring purposes. The entire scientific world (these countries included) measures temperature using the Celsius scale and thermodynamic temperature using the Kelvin scale, which is just the Celsius scale shifted downwards so that 0 K= −273.15 °C, or absolute zero. Many engineering fields in the U.S., notably high-tech and US federal specifications (civil and military), also use the kelvin and degrees Celsius scales. Other engineering fields in the U.S. also rely upon the Rankine scale (a shifted Fahrenheit scale) when working in thermodynamic-related disciplines such as combustion.
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