Earth’s Magnetic Field Reversal Earth’s Magnetic Field Reversal Took Three Times Longer Than Thought A new study suggests the last field reversal 773,000 years ago took 22,000 years to occur, which could explain some of the inner workings of our planet’s core。 Earth’s magnetic field is known to flip direction with a somewhat unnerving regularity: [...]
Magnetic Pole Reversal Happens All The (Geologic) Time Scientists understand that Earth's magnetic field has flipped its polarity many times over the millennia. In other words, if you were alive about 800,000 years ago, and facing what we call north with a magnetic compass in your hand, the needle would point to 'south.' This is [...]
What Is Magnetic Reversal? Earth is like a giant magnet in several ways. Not only does it have a magnetic north and south pole that act similarly to the poles on bar magnets, but the planet is surrounded by a strong magnetic field, which is electrically charged and able to interact with magnetized matter. The [...]
Magnetic Particle Examination Magnetic particle examination (MT) is a very popular, low-cost method to perform nondestructive examination (NDE) of ferromagnetic material. Ferromagnetic is defined in ASME Section V as “a term applied to materials that can be magnetized or strongly attracted by a magnetic field.” MT is an NDE method that checks for surface discontinuities [...]
How to Determine Polarity of Magnets You might have heard the phrase “opposites attract.” While perhaps not always the best advice for relationships, this cliché is the rule of thumb for magnet polarity. Since we inhabit a giant magnet (Earth), understanding magnet polarity on a small scale will help you understand the larger magnetic field [...]
Water Flow Sensor Magnet Material and Application The water flow sensor is a water flow sensing instrument that outputs pulse, current, or voltage signals to the water flow through induction. The output of the signal has a certain linear proportional relationship with the water flow, so it can be used for water management and flow [...]
Electromagnetic Radiation Definition Electromagnetic radiation is self-sustaining energy with electric and magnetic field components. Electromagnetic radiation is commonly referred to as "light", EM, EMR, or electromagnetic waves. The waves propagate through a vacuum at the speed of light. The oscillations of the electric and magnetic field components are perpendicular to each other and to the [...]
The Relationship Between Electricity and Magnetism Together, these two phenomena form the basis for electromagnetism Electricity and magnetism are separate yet interconnected phenomena associated with the electromagnetic force. Together, they form the basis for electromagnetism, a key physics discipline. Key Takeaways: Electricity and Magnetism Electricity and magnetism are two related phenomena produced by the electromagnetic [...]
How Electromagnets Work What do a wrecking yard, a rock concert and your front door have in common? They each use electromagnets, devices that create a magnetic field through the application of electricity. Wrecking yards employ extremely powerful electromagnets to move heavy pieces of scrap metal or even entire cars from one place to another. [...]
Magnetism FAQ Basic Electricity Question 1 A permanent magnet is a device that retains a magnetic field without need for a power source. Though many of us have experienced the effects of magnetism from a permanent magnet, very few people can describe what causes permanent magnetism. Explain the cause of permanent magnetism, in your own [...]
Observe The Magnetic Field of Magnetic Pole Generally speaking, the magnetic field of a strong magnet is invisible and intangible. This phenomenon also increases the mystery of the magnet and stimulates everyone's curiosity. If you want to visualize the abstract magnetic field and identify the magnetic poles, you can use a few simple auxiliary tools. [...]
Permanent Lifting Magnets Poles Number For every selection process of lifting magnets, you must know your loads’ weight, shape, material and contact area to determine the necessary amount and size of magnets. One important question to ask yourself: Are your loads thick? The loads need to be thick enough for the magnetic field of magnet [...]
Halbach Array for Magnetic Water Conditioner Regularly we see a magnetic water conditioner including two magnets with opposite magnetic poles face-to-face cliped together, just simply clip them together onto the water pipes will get a magnetized water resulting from flowing water cutting the magnetic filed. The advantages are low cost and simple operation but the [...]
Polymagnet Alignment: How it works Correlated Magnetics Research makes Polymagnets with precision auto-alignment by applying Barker correlation codes and techniques commonly used in the world of radar. Here is a simplified explanation, including a bit of background information about correlation codes. When mathematical waves or curves such as sine waves are in phase (i.e., when [...]
All About Magnets Magnet Glossary Magnetism is a broad and well-researched science with a language of its own. Our magnet glossary, culled from respected resources around the internet, is your one-stop shop for clear definitions of key magnet terminology. Bookmark it or print it out and keep it close to help when you get stumped [...]
There are different ways of defining magnetic poles. The most common understanding is that they are the positions on the Earth's surface where the geomagnetic field is vertical. These poles are called dip poles, and the north and south dip poles do not have to be (and are not now) antipodal. In principle the dip [...]
Magnetic ring parts Magnetic ring parts Magnetic poles Axially and diametrically magnetised ring magnetic discs with labelled north and south poles The magnetic poles of a ring magnetic disc can be magnetised in two ways; axially and diametrically. An axially magnetised ring magnetic disc is magnetised through the length of the magnet, whereas [...]
