Magnetism Blog: Jacob Braunfeld

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Magnetic Tattoos 

Tattoos have been a prevalent part of culture since ancient times. They represent a rite of passage and could symbolize religious meaning. Throughout history tattoos have improved and changed ever since the invention of the tattoo gun in the 1800’s. Currently, some tattoo inks contain certain amounts of ferrous metals such as iron oxides. Red tattoo ink is most commonly the carrier of these types off metals and can rarely have negative effects. One example is that these metals can sometimes react to very powerful electromagnetic fields.  
Red tattoo ink only contains trace amounts of iron and that can react very violently to powerful electromagnetic fields in certain circumstances. But imagine if magnetic materials were purposefully added to tattoo ink. Nokia had patented for an idea for tattoos that could potentially buzz when your phone rings. 
Only very few metals are magnetic regardless of popular belief. Iron, nickel, and cobalt are some of the few magnetic metals and are called ferrous metals. The reason that so much of the metal that we encounter in day to day life is magnetic is because some of the most common metals used in building and furniture are alloys containing iron such as steel. Therefore, most people think that all metal is magnetic. 
With more metal oxides added to tattoo ink, the tattoos could easily pick up much smaller electromagnetic fields such as a phone, or an incoming call. Eventually the technology could even become powerful enough to move or change a tattoo with the press of 
a button! 

https://io9.gizmodo.com/nokia-has-filed-a-patent-for-vibrating-magnetic-tattoo-5895073
 Image result for magnetImage result for tattooImage result for phone

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