Energy & Green Tech
Aviation is a big user of fossil fuels and, as such, is a heavy producer of carbon emissions. Sustainability is high on the agenda. New work in the International Journal of Sustainable Aviation has reviewed the thermo-physical ...
Nov 7, 2022
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Engineering
Russia used a hypersonic missile against a Ukrainian arms depot in the western part of the country on March 18, 2022. That might sound scary, but the technology the Russians used is not particularly advanced. However, next-generation ...
Apr 18, 2022
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Energy & Green Tech
Hydropower has massive potential as a source of clean electricity, and the Indus basin can be a key player in fulfilling long-term energy storage demands across Africa, Asia, Europe, and the Middle East. IIASA researchers ...
Jul 20, 2021
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Telecom
Florida's Republican governor, Ron DeSantis, called this week on the administration of President Joe Biden to greenlight a plan to transmit the internet to people in Cuba via high-altitude balloons when their government has ...
Jul 17, 2021
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Energy & Green Tech
By harnessing the power of strong winds at higher altitude than turbines reach, airborne wind energy could be another key source of renewable energy, but it will need a combination of successful designs, more robust software ...
Apr 6, 2020
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Security
People in Western Australia may soon see more than birds in the sky, as the state's police force has announced plans to deploy drones to enforce social distancing. The drones will visit parks, beaches and cafe strips, ensuring ...
Mar 31, 2020
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Business
The Philippines' largest budget airline Cebu Air Inc has ordered 16 Airbus planes worth $4.8 billion, the company said Monday, as it aims to expand carrying capacity with larger, more fuel-efficient jets.
Nov 4, 2019
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Altitude or height is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The reference datum also often varies according to the context. Although the term altitude is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage.
Vertical distance measurements in the "down" direction are commonly referred to as depth.
This text uses material from Wikipedia, licensed under CC BY-SA
