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How to Measure Very Weak Magnetic Fields

1. What Are Very Weak Magnetic Fields and Why Do They Matter? Imagine standing in a quiet room where the only sound is a pin dropping from a height of 10 stories—that’s how faint the magnetic fields we’re discussing are. Very weak magnetic fields refer to magnetic signals so subtle they measure in the range of femtotesla […]

Silver jewelry collection with a black magnet cube—testing if silver is magnetic, showcasing real - world items to explore silver’s magnetic properties.

Is Silver Magnetic?

Pure silver is not magnetic—its atomic structure prevents strong magnetic alignment. However, silver alloys (the most common form in everyday items) might show weak magnetic behavior if they contain magnetic metals like nickel or iron. Whether you’re a jeweler, a collector, or simply curious, understanding silver’s magnetic properties helps you identify materials, test for alloys, and […]

A horseshoe magnet in a lab environment attracting metal nails, demonstrating magnetic properties relevant to the topic of what metals are magnetic.

What metals are magnetic​?

Iron, cobalt, and nickel are the main magnetic metals. Some alloys like steel and rare earth metals like neodymium are also very magnetic. Not all metals react to magnets. Knowing which metals are magnetic helps many industries. Magnetic metals are important in making things, recycling, building, healthcare, and making energy. For example, magnets move metal […]

Laboratory setup with metallic cylindrical samples and testing tools to verify if galvanised steel is magnetic

Is galvanised steel magnetic​?

Yes, galvanised steel is magnetic. The steel core inside gives it magnetic properties. The zinc coating on the surface does not block magnetism. You might notice that the magnetic pull feels a bit weaker compared to bare steel. This happens because the zinc layer adds a small barrier. If you use magnets for construction or […]

Experimental setup with gold samples and magnet to test if gold sticks to magnets

Does gold stick to magnets​?

No, pure gold does not stick to magnets. Scientists have measured gold’s volume magnetic susceptibility at about -3.44 × 10⁻⁵ at 20°C, which shows that gold is diamagnetic and weakly repels magnetic fields. Advanced techniques such as SQUID magnetometry and X-ray magnetic circular dichroism confirm this property. Some gold jewelry may react to magnets because […]

What is a magnetic field?

A magnetic field is the invisible space around a magnet or electric current. In this space, magnetic forces can push or pull things. It can move objects like iron filings or compass needles. For example, a refrigerator magnet makes a field that can hold up a note. Earth’s magnetic field helps compasses point north. The […]

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