Engineer develops tool to predict oxygen levels in water
Plants and animals on land aren't the only organisms that need oxygen to survive. Underwater aquatic life also requires dissolved oxygen to live and prosper.
Mar 9, 2022
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5
Engineering
Plants and animals on land aren't the only organisms that need oxygen to survive. Underwater aquatic life also requires dissolved oxygen to live and prosper.
Mar 9, 2022
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5
Energy & Green Tech
A new device harvests two types of energy during the daytime, making it cool on one end and hot on the other, to generate electricity around the clock. With further improvements, the device could be used in off-grid Internet-of-things ...
Mar 8, 2022
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43
Computer Sciences
Researchers at the National Institute of Standards and Technology (NIST) have constructed and tested a system that allows commercial electronic components—such as microprocessors on circuit boards—to operate in close ...
Feb 24, 2022
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56
Energy & Green Tech
Recycling of electric car batteries can be easier, cheaper, and more environmentally friendly, according to a new scientific article from Chalmers University of Technology, Sweden, which outlines an optimized recycling process. ...
Feb 21, 2022
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439
Robotics
Researchers have developed self-healing, biodegradable, 3D-printed materials that could be used in the development of realistic artificial hands and other soft robotics applications.
Feb 18, 2022
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638
Engineering
Air conditioning already accounts for a huge share of the total energy consumption in warm climate countries. It is not just a burden to the environment, but also a financial blow to the pocket. It is an issue which prompted ...
Feb 15, 2022
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43
Robotics
A new robotic sensor that mimics the automatic human reaction to heat is being hailed as a world first.
Feb 15, 2022
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470
Engineering
America's growing demand for electric vehicles has shed light on the significant challenge of sustainably sourcing the battery technology necessary for the broad shift to renewable electric and away from fossil fuels. In ...
Feb 10, 2022
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2098
Energy & Green Tech
Prof. Wang Zhenyang's research group from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Sciences (CAS) has enhanced the energy storage capacity of graphene supercapacitors via solar heating. Related ...
Jan 27, 2022
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593
Engineering
The next generation of soft robotics, smart clothing and biocompatible medical devices are going to need integrated soft sensors that can stretch and twist with the device or wearer. The challenge: most of the components ...
Jan 24, 2022
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59
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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