Satellite uses SAR imagery to capture world's sharpest images
A satellite carrying a camera that is so powerful it can capture an image of virtually any object on Earth with crystal-clear resolution is now offering its services to the public.
Engineering
A satellite carrying a camera that is so powerful it can capture an image of virtually any object on Earth with crystal-clear resolution is now offering its services to the public.
Energy & Green Tech
America's highways and byways would be a wild west if we didn't have automotive standards. So, give some serious respect, please, to these massive documents filled with painstaking technical specifications. After all, they ...
Dec 18, 2023
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Energy & Green Tech
The more the sun shines in the southern German town of Aurach, the more likely it is that Jens Husemann's solar panels will be disconnected from the grid—an exasperating paradox at a time when Germany is navigating an energy ...
Aug 7, 2022
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301
Security
Drones of all sizes are being used by environmental advocates to monitor deforestation, by conservationists to track poachers, and by journalists and activists to document large protests. As a political sociologist who studies ...
Jul 28, 2020
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551
Energy & Green Tech
Researchers at Princeton and UCLA have developed a passive mechanism to cool buildings in the summer and warm them in the winter.
Jun 27, 2024
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Energy & Green Tech
Solar power systems with double-sided (bifacial) solar panels—which collect sunlight from two sides instead of one—and single-axis tracking technology that tilts the panels so they can follow the sun are the most cost ...
Jun 3, 2020
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767
Energy & Green Tech
More powerful, longer lasting, faster charging.
Energy & Green Tech
The governor of Indiana has announced that the Indiana Department of Transportation and Purdue University will soon begin testing the viability of "Magment"—a magnetized concrete for use in charging electric vehicles as ...
Energy & Green Tech
Perovskites, mineral materials composed of calcium titanate, have been found to be valuable for the fabrication of high-performance solar cells. While teams of scientists and engineers worldwide have been developing and testing ...
Business
A lawsuit against Amazon is expected to be filed Monday by the family of a delivery driver who was killed in December after a tornado hit an Amazon warehouse downstate, according to a news release from the law firm retained ...
Jan 17, 2022
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Weather is a set of all the phenomena occurring in a given atmosphere at a given time. Weather phenomena lie in the troposphere. Weather refers, generally, to day-to-day temperature and precipitation activity, whereas climate is the term for the average atmospheric conditions over longer periods of time. When used without qualification, "weather" is understood to be the weather of Earth.
Weather occurs due to density (temperature and moisture) differences between one place and another. These differences can occur due to the sun angle at any particular spot, which varies by latitude from the tropics. The strong temperature contrast between polar and tropical air gives rise to the jet stream. Weather systems in the mid-latitudes, such as extratropical cyclones, are caused by instabilities of the jet stream flow. Because the Earth's axis is tilted relative to its orbital plane, sunlight is incident at different angles at different times of the year. On Earth's surface, temperatures usually range ±40 °C (100 °F to −40 °F) annually. Over thousands to hundreds of thousands of years, changes in Earth's orbit affect the amount and distribution of solar energy received by the Earth and influence long-term climate
Surface temperature differences in turn cause pressure differences. Higher altitudes are cooler than lower altitudes due to differences in compressional heating. Weather forecasting is the application of science and technology to predict the state of the atmosphere for a future time and a given location. The atmosphere is a chaotic system, so small changes to one part of the system can grow to have large effects on the system as a whole. Human attempts to control the weather have occurred throughout human history, and there is evidence that human activity such as agriculture and industry has inadvertently modified weather patterns.
Studying how the weather works on other planets has been helpful in understanding how weather works on Earth. A famous landmark in the Solar System, Jupiter's Great Red Spot, is an anticyclonic storm known to have existed for at least 300 years. However, weather is not limited to planetary bodies. A star's corona is constantly being lost to space, creating what is essentially a very thin atmosphere throughout the Solar System. The movement of mass ejected from the Sun is known as the solar wind.
This text uses material from Wikipedia, licensed under CC BY-SA