Energy & Green Tech
In a new study published in the Journal of Remote Sensing in February 2024, researchers utilized data augmentation alongside the LightGBM machine learning model for the estimation of both diffuse and direct solar radiation. ...
Mar 15, 2024
0
23
Energy & Green Tech
As traditional energy methods increase in cost and take their toll on the environment, Penn State researchers are turning to two underutilized renewable resources, the sun and outer space, for solutions to generate electricity ...
Mar 14, 2024
0
55
Energy & Green Tech
State-of-the-art printed flexible solar cell technology developed by Australia's national science agency, CSIRO, was successfully launched into space today (March 5) aboard Australia's largest private satellite, Optimus-1, ...
Mar 5, 2024
0
13
Engineering
An innovative probe which can operate in temperatures as high as molten lava has been created by researchers.
Feb 29, 2024
0
67
Energy & Green Tech
In order to prevent power grid failure in a society where electrification is supplied increasingly by variable sources like solar and wind, researchers in Sweden report the development of artificial intelligence algorithms ...
Feb 28, 2024
0
71
Energy & Green Tech
Solar rays focused on concentrator photovoltaic cells using parabolic mirrors not only supply electricity, but also thermal energy for industrial processes, heating or cooling. Three technological innovations significantly ...
Feb 22, 2024
0
17
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
0
22
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
0
10
Engineering
Over the past decade, photovoltaic cells (PCs) have garnered much attention worldwide as promising sources of renewable energy. However, PCs still have not achieved light-to-electricity conversion efficiencies high enough ...
Jan 3, 2024
0
81
Engineering
If you want to improve the output of solar energy systems, why not also run them at night? That's the question researchers in Qatar and Jordan addressed as they successfully devised a system that promises to more than double ...
Sunlight, in the broad sense, is the total spectrum of the electromagnetic radiation given off by the Sun. On Earth, sunlight is filtered through the atmosphere, and the solar radiation is obvious as daylight when the Sun is above the horizon. Near the poles in summer, the days are longer and the nights are shorter or non-existent. In the winter at the poles the nights are longer and for some periods of time, sunlight may not occur at all. When the direct radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and heat. Radiant heat directly produced by the radiation of the sun is different from the increase in atmospheric temperature due to the radiative heating of the atmosphere by the sun's radiation. Sunlight may be recorded using a sunshine recorder, pyranometer or pyrheliometer. Sunlight takes about 8.3 minutes to reach the Earth. The World Meteorological Organization defines sunshine as direct irradiance from the Sun measured on the ground of at least 120 watts per square metre.
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared, visible, and ultra-violet light. Bright sunlight provides luminance of approximately 100,000 candela per square meter at the Earth's surface.
Sunlight is a key factor in photosynthesis, a process crucially important for life on Earth.
This text uses material from Wikipedia, licensed under CC BY-SA
