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Blocks by Speks GIVEAWAY

Ferrofluid in a bottle to view Magnetic Fields | Magnetic Games

Magnetic Games
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Observing magnetic fields has always fascinated me, and the method of ferrofluid in a bottle is one of the best. You need to make a solution saturated with salt to prevent the ferrofluid from sticking too much to the walls of the bottle. If you want to buy the ferrofluid click here https://sumag.net/ferrofluid-xmg01 click here […]