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) ...

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 ...

Bruce Kingsley used an Arduino project board to add sound, motion, and programmed lighting effects to this HO scale house. You can read his story and other Arduino ...

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 ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Nov 28, 2025, 07:59am EST Map of the strength of the Earth's ...

Simulations and satellite data reveal that Earth's magnetic field is more complex than scientists had thought. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

This could be bad news for satellites and spacefarers. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.