Robotics

Multifunctional metallic backbones for origami robotics

Origami robots can be formed by tightly integrating multiple functions of actuation, sensing and communication. But the task is challenging as conventional materials including plastics and paper used for such robotic designs ...

Robotics

RoboBee powered by soft muscles

The sight of a RoboBee careening towards a wall or crashing into a glass box may have once triggered panic in the researchers in the Harvard Microrobotics Laboratory at the Harvard John A. Paulson School of Engineering and ...

Robotics

These new soft actuators could make soft robots less bulky

Engineers at the University of California San Diego have developed a way to build soft robots that are compact, portable and multifunctional. The advance was made possible by creating soft, tubular actuators whose movements ...

Energy & Green Tech

Device generates light from the cold night sky

An inexpensive thermoelectric device harnesses the cold of space without active heat input, generating electricity that powers an LED at night, researchers report September 12 in the journal Joule.

Engineering

An implantable device that produces energy using ultrasound

A team of researchers affiliated with several institutions in the Republic of Korea has developed a type of implantable device that produces energy using an external ultrasound source. In their paper published in the journal ...

Robotics

You can't squash this roach-inspired robot

If the sight of a skittering bug makes you squirm, you may want to look away—a new insect-sized robot created by researchers at the University of California, Berkeley, can scurry across the floor at nearly the speed of ...

Hi Tech & Innovation

GM's Cruise heads down new road with new robotaxi concept

General Motors' self-driving car company will attempt to deliver on its long-running promise to provide a more environmentally friendly ride-hailing service in an unorthodox vehicle designed to eliminate the need for human ...

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Electricity

Electricity (from the New Latin ēlectricus, "amber-like"[a]) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning and static electricity, but in addition, less familiar concepts, such as the electromagnetic field and electromagnetic induction.

In general usage, the word 'electricity' is adequate to refer to a number of physical effects. However, in scientific usage, the term is vague, and these related, but distinct, concepts are better identified by more precise terms:

Electrical phenomena have been studied since antiquity, though advances in the science were not made until the seventeenth and eighteenth centuries. Practical applications for electricity however remained few, and it would not be until the late nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society. Electricity's extraordinary versatility as a source of energy means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. The backbone of modern industrial society is, and for the foreseeable future can be expected to remain, the use of electrical power.

This text uses material from Wikipedia, licensed under CC BY-SA