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Right let’s get straight to the point, if like most, you sometimes have issues with interchangeable lens (they change as easy as pie at times and other times it feels like the skiing and snowboarding gods are against you) then keep reading, you will be very intrigued about the Magna-Tech technology from Anon.
The Magna-Tech technology features in three of Anon goggles, the M1, M2 and the WM1. The goggles use rare-earth magnets that hold the goggle lens in place. So what are rare-earth magnets and why have Anon used these magnets rather than traditional magnets?
Right here is the science (try not to fall asleep) rare-earth magnets are made from alloys of rare earth elements such as: Scandium, Praseodymium, Dysprosium and Ytterbium just to name a few. The reason why they are ridiculously stronger than standard magnets is simple, rare earth elements are metals that are ferromagnetic, this means like iron they can be permanently magnetised, but their curie temperatures are below room temperature, so in pure form their magnetism only appears in low temperatures. However, they form compounds with the transition metals such as iron, nickel and cobalt, and some of these have curie temperatures well above room temperature. In a nut shell no matter the temperature the strength of the rare-earth magnets will stay the same.
Another reason why Anon probably picked rare-earth magnets is that unlike than standard magnets rare-earth magnets have crystalline structures which have very high magnetic anisotropy, in other words the magnet has no preferential direction for its magnetic moment which can ensure the best hold.
Congratulations if you are still reading this then you're now a science whiz, well done! Now that the science is out of the picture let’s talk about the individual goggles.
So the M1 goggle uses twelve rare-earth magnets giving you six points of connection, three at the top and three at the bottom. Each connection has a pulling force of 2.75lb with a total retention of 16.5 lb. so you can rest assured that the lens won’t just “pop” out. All you need is to make sure that you connect the lens to the top of the goggle and do the same when taking the lens off and jobs done!
The M2 goggle uses sixteen integrated rare-earth magnets which are used for eight points of contact. You have the three connection points on the top and the bottom of the goggle but you also have two connection points on the side as well, each connection point has a force of 2.75lb with gives a total retention of 22lb. so just like the M1 you can put the M2 through its paces.
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You guessed it right the WM1 is the female version of the M1 but it does use more rare-earth magnets than the WM1. It uses fourteen magnets rather than the twelve you get in the M1 but it still uses six connection points, three on top and three at the bottom and each connection point has a pull force of 2.75lb. Because it uses more rare-earth magnets, the overall retention is higher at 1925lb. What is also a nice touch to the WM1 is that getting the front lens off is nice and easy, using the additional panels at the bottom of the goggle all you need to do is pull on these and hey presto the lens is off, when it comes to putting a new lens on make sure that the panels are in line with the bottom of the goggle and let go, the magnets will do the work, it’s as simple as that!