Engineering

Changing shapes at the push of a button

Programmable materials are true shapeshifters. They can change their characteristics in a controlled and reversible way with the push of a button, independently adapting to fit new conditions. They can be used, for example, ...

Robotics

Robots that can feel cloth layers may one day help with laundry

New research from Carnegie Mellon University's Robotics Institute can help robots feel layers of cloth rather than relying on computer vision tools to only see it. The work could allow robots to assist people with household ...

Energy & Green Tech

New energy-saving super magnet gets first test run

Testing has begun at Diamond Light Source for an energy-saving super-magnet, designed and built by the Science and Technology Facilities Council (STFC), for our next generation of particle accelerator.

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Magnetic field

Magnetic fields surround magnetic materials and electric currents and are detected by the force they exert on other magnetic materials and moving electric charges. The magnetic field, at a given point, is specified by both a direction and a magnitude (or strength); as such it is a vector field.

In special relativity, the electric field and magnetic field are two interrelated aspects of a single object, called the electromagnetic field. A pure electric field in one reference frame is observed as a combination of both an electric field and a magnetic field in a moving reference frame.

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