Energy & Green Tech
The search for renewable energy sources, which include wind, solar, hydroelectric dams, geothermal, and biomass, has preoccupied scientists and policymakers alike, due to their enormous potential in the fight against climate ...
Jun 9, 2020
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412
Engineering
Integrating a super moisture-absorbent gel with light-active materials, researchers in Singapore have developed a humidity digester to dry the ambient air while generating energy. The method, presented November 20 in the ...
Nov 20, 2019
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143
Energy & Green Tech
Rice University scientists believe they've overcome a major hurdle keeping perovskite-based solar cells from achieving mainstream use.
Nov 5, 2019
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246
Energy & Green Tech
Kristof Retezár, an Austrian designer, has come up with Fontus, which was designed as a self-filling water bottle for your bicycle. This device collects the moisture from the air, condenses it and stores it as safe drinking ...
Energy & Green Tech
To reach the goal of 82% renewable energy in Australia's grid by 2030, we'll need to build a lot more solar.
Feb 16, 2024
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22
Robotics
Working in a greenhouse is both strenuous and time-consuming. The picking robot from ETH spin-off Floating Robotics takes on particularly repetitive tasks, thereby alleviating the strain on human pickers. It is currently ...
Dec 19, 2023
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Engineering
Long-running research between the UK's National Nuclear Laboratory and The University of Manchester, UK, has probed the complex interplay between the surface features of plutonium dioxide and its surrounding environment. ...
Dec 11, 2023
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Engineering
A chilly winter morning, the car windshield shrouded in a thick layer of frost. Who has not experienced the frustration of scraping ice or waiting for the defroster to work? It is a daily winter struggle, but what if this ...
Sep 6, 2023
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5
Engineering
Proton-Exchange Membrane Fuel Cells (PEMFCs), directly converting fuel into electric energy through a solid electrolyte membrane, have become one of the most promising devices for the electrical conversion of hydrogen in ...
Mar 2, 2023
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5
Automotive
Automaker Stellantis said Thursday it is redoubling outreach to US owners of about 276,000 vehicles with dangerous Takata airbags that have been recalled but were never repaired.
Nov 3, 2022
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25
Humidity is a term for the amount of water vapor in the air, and can refer to any one of several measurements of humidity. Formally, humid air is not "moist air" but a mixture of water vapor and other constituents of air, and humidity is defined in terms of the water content of this mixture, called the Absolute humidity. In everyday usage, it commonly refers to relative humidity, expressed as a percent in weather forecasts and on household humidistats; it is so called because it measures the current absolute humidity relative to the maximum. Specific humidity is a ratio of the water vapor content of the mixture to the total air content (on a mass basis). The water vapor content of the mixture can be measured either as mass per volume or as a partial pressure, depending on the usage.
In meteorology, humidity indicates the likelihood of precipitation, dew, or fog. High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.
This text uses material from Wikipedia, licensed under CC BY-SA
