Some countries could meet their total electricity needs from floating solar panels, research shows
Floating solar photovoltaic panels could supply all the electricity needs of some countries, new research has shown.
Jun 4, 2024
0
137
Engineering
Floating solar photovoltaic panels could supply all the electricity needs of some countries, new research has shown.
Jun 4, 2024
0
137
Engineering
Modern life relies on electricity and electrical devices, from cars and buses to phones and laptops, to the electrical systems in homes. Behind many of these devices is a type of energy storage device, the supercapacitor. ...
May 29, 2024
0
22
Robotics
"I'll have you eating out of the palm of my hand" is an unlikely utterance you'll hear from a robot. Why? Most of them don't have palms.
May 20, 2024
0
24
Energy & Green Tech
In a world where rising temperatures increase the demand for cooling, traditional air conditioning (AC) systems contribute significantly to global energy consumption. They also heat Earth overall: to cool down a certain volume ...
Apr 10, 2024
0
1
Electronics & Semiconductors
As the Internet of Things connects more devices into a collective network—even single-use sensors like food packaging, agriculture or "smart bandages"—the need for biodegradable electronics grows increasingly urgent.
Mar 13, 2024
0
53
Robotics
With a brain the size of a pinhead, insects perform fantastic navigational feats. They avoid obstacles and move through small openings. How do they do this with their limited brain power? Understanding the inner workings ...
Feb 12, 2024
0
92
Energy & Green Tech
Solar panels and photovoltaics (PVs) are becoming increasingly widespread, contributing to ongoing efforts aimed at decarbonizing electricity production. Solar cells based on perovskites, a class of minerals that can leverage ...
Electronics & Semiconductors
In a recent study published in Advanced Energy Materials, a team of ANSTO scientists, led by Prof. Vanessa Peterson, used neutron scattering techniques to understand the formation of harmful lithium structures in rechargeable ...
Nov 3, 2023
1
77
Engineering
The ocean isn't just impacted by climate change—it may also be part of the solution to reversing it.
Jul 24, 2023
0
20
Engineering
A research team has developed a human lung-inspired graphene-metal organic framework hybrid gas sensor, which can monitor extremely low concentrations of nitrogen dioxide at the level of one billionth in real-time. This study ...
Jul 6, 2023
0
3
Surface area is the measure of how much exposed area a solid object has, expressed in square units. Mathematical description of the surface area is considerably more involved then the definition of arc length of a curve. For polyhedra (objects with flat polygonal faces) the surface area is the sum of the areas of its faces. Smooth surfaces, such as a sphere, are assigned surface area using their representation as parametric surfaces. This definition of the surface area is based on methods of infinitesimal calculus and involves partial derivatives and double integration.
General definition of surface area was sought by Henri Lebesgue and Hermann Minkowski at the turn of the twentieth century. Their work led to the development of geometric measure theory which studies various notions of surface area for irregular objects of any dimension. An important example is the Minkowski content of a surface.
This text uses material from Wikipedia, licensed under CC BY-SA