How to Find a Magnet’s North and South Poles - Explained by Neil deGrasse Tyson #physics #science

Prop Department - Tyler Fever on Instagram: "This magnet will last 1,000 years 😲🧲 read below .. .. Permanent magnets decay at a very slow rate if kept cool and dry, like cheese. It will loose about 2% power every century. It is certainly something to keep around for experiments!"