As black holes feed, they pull material into a disk around them. The material orbiting in this disk gets heated to extreme temperatures, and so it becomes a plasma — a state of matter in which some of ...

Abstract: This article presents a vector magnetic field sensor based on magnetic fluid (MF) encapsulation and a cascaded special optical fiber structure. The sensor consists of single-mode fiber (SMF) ...

Two vast, mysterious blobs of hot rock around Earth’s core may have been instrumental in producing Earth’s magnetic field and caused it to be slightly wonky for millions of years. Scientists have ...

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are ...

The magnetized rocks of Earth's crust and mantle, also known as the upper lithosphere, accounts for generating 6 percent of the planets magnetic field. Data from the European Space Agency's Swarm ...

An electrical current running through a wire generates a surrounding magnetic field which is detectable by a compass. The right-hand is used to determine, at each position, the direction of this ...

You don’t need to buy an expensive EMF or stud detector for basic magnetic field detection at home. Your Android phone’s built-in magnetometer can handle simple detection tasks at no cost. If you want ...

From ancient compasses to modern smartphones, magnetometers have quietly shaped how we sense and navigate the world. Let us explore the fundamentals behind these field-detecting devices. Magnetic ...

Magnetoreception, an animal’s ability to sense Earth’s magnetic field, remains one of the most intriguing mysteries in biology. While this skill is surprisingly common across species, the inner ...