News tagged with temperature

Related topics: climate change · nasa · climate · global warming · plants

Running in the cold: how to survive and thrive

(HealthDay)—Whether you're training for a marathon or just logging miles, cold-weather running requires some special health and safety precautions, according to a sports medicine expert.

Jan 14, 2018
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Astronauts may get space fever

(HealthDay)—Weightlessness apparently causes astronauts' body temperatures to run a little hot while in space, a new study reports.

Jan 10, 2018
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Layer up when temperatures plummet

(HealthDay)—Two-thirds of the United States is grappling with bitterly cold temperatures as an Arctic front slides across the country, so one emergency doctor offers practical advice for those caught in the frigid weather.

Jan 03, 2018
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Global warming's humidity could put lives in danger

(HealthDay)—You may have heard the expression: It's not the heat, it's the humidity. Researchers seem to agree, and are now warning that humidity is likely to increase the threat to human health from climate change-related ...

Dec 27, 2017
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Cooling glove helps athletes and patients

A cooling device that has been improving strength and endurance in mostly male athletes for 15 years is finding new uses in helping people with multiple sclerosis live normal lives, preventing overheating in Ebola workers ...

Dec 27, 2017
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Heat, humidity, and heart disease

It's no secret that high temperatures or extreme humidity can negatively impact one's physical health, particularly those afflicted with cardiovascular disease. Previous literature has even suggested that cardiovascular disease ...

Dec 11, 2017
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Temperature

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.

This text uses material from Wikipedia, licensed under CC BY-SA

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