VSauce - Mind Blow #70

Good People Doing Good Things

Diamagnetism

Many common materials such as water, wood, plants, animals, diamonds, fingers, etc. are usually considered to be non-magnetic but in fact, they are very weakly diamagnetic. Diamagnets repel, and are repelled by a strong magnetic field. The electrons in a diamagnetic material rearrange their orbits slightly creating small persistent currents which oppose the external magnetic field. Take a look at the following video to get a visual explanation as "non-magnetic" materials are affected by magnetic fields.

The Treasure Hunt (An Interactive Adventure)

*Warning, this contains language*

Last Names & Surnames

 

Look up the meaning of your last name with these three resources:
http://genealogy.familyeducation.com/family-names-surnames/meaning-origin
http://www.ancestry.com/learn/facts
http://www.surnamedb.com/