Modeling shows green roofs can cool cities and save energy
Extensive greenery coverage on building rooftops could significantly reduce temperatures at the city scale and decrease energy costs, according to a new study.
Feb 13, 2024
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242
Engineering
Extensive greenery coverage on building rooftops could significantly reduce temperatures at the city scale and decrease energy costs, according to a new study.
Feb 13, 2024
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242
Energy & Green Tech
An international team of scientists has made a new discovery that may help to unlock the microscopic mystery of high-temperature superconductivity and address the world's energy problems.
Feb 12, 2024
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Consumer & Gadgets
When a group of California researchers started a COVID-19 study in 2020 using fitness tracking rings, they didn't know they would make a leap forward for an entirely different condition.
Feb 12, 2024
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Engineering
Smart accessories are increasingly common. Rings and watches track vitals, while Ray-Bans now come with cameras and microphones. Wearable tech has even broached brooches. Yet certain accessories have yet to get the smart ...
Feb 7, 2024
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Energy & Green Tech
The field of solar cells has witnessed exponential development over the past decades. Evaluating the performance of solar cells has been simple because all devices can be compared given a single metric, the efficiency, which ...
Feb 7, 2024
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Automotive
As a big winter storm rolled across the United States in mid-January, many news outlets reported on drivers of electric vehicles dealing with dramatically reduced range and multi-hour waits at public charging stations. It's ...
Jan 31, 2024
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9
Energy & Green Tech
My teenage son regularly complains about his room being too warm, even during winter. While the rest of the house is at a comfortable temperature, the video game PC he plays emits a significant amount of heat.
Jan 26, 2024
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16
Engineering
Hydrogen gas is the smallest and lightest of all known molecules, which makes it easy to leak. It's colorless and odorless. Also, when concentrated above 4% in a confined space, it poses a risk of ignition or explosion.
Jan 25, 2024
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28
Engineering
People who have worked in a large building have likely encountered the experience of being too hot or too cold in their workspace. Regulating temperature in such buildings is essential to both ensuring comfort of those using ...
Jan 24, 2024
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Engineering
By revamping a forgotten heat recovery technique used in the design of Montreal's Royal Victoria Hospital, McGill University researchers say modern temperature control and ventilation design could be transformed.
Jan 23, 2024
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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.
This text uses material from Wikipedia, licensed under CC BY-SA