This Is A Homopolar Motor.

This gif shows mushroom sprouting. It’s so cool!

How To Make Invisible Ink

This is what happens when you put molten salt into water - Full video

Weekend Project: Do Osmosis with Food

Osmosis is the movement of water across semi-permeable membrane. Experiment with eggs to demonstrate the process of water transport into and out of cells. Get started here!

High-tech gloves translate sign language into spoken words - Full video

Scientists have discovered that hard coral likes eating plastic because it’s tasty to them. More research is needed to figure out why exactly and how it affects them. [Alex Seymour, Duke University]

Materials: 1. A D size battery 2. Paper clips 3. 3 feet of thin coated copper wire 4. A 3 inch large iron nail

Steps: 1. First, leave 8 inches of wire at one end and wrap most of the rest of the wire on the nail ( do not overlap the wires). 2. Next, leave 8 inches of wire at the other end of the nail. 3. Then, remove an inch of the plastic coating from both ends of the wire and attach one end of the wire to one end of the battery and the other wire to the other end of the battery. 4. Finally, put the nail near the paper clips and it should pick them up!

Lesson: Magnets that cannot be turned off like ones on our refrigerators are called permanent magnets. Since the magnet we made can be turned off and on, it is known as an electromagnet. They run on electricity and are only magnetic when the electricity is flowing through the wires, which has the molecules in the nail attract to the metal paper clips.

From Women’s Rights News on Facebook.

*EDIT* Small detail, but Angela Zhang is technically Asian-American, or Chinese-American, rather than a “Chinese schoolgirl.”

A magnet falling through a cylindrical hollow copper pipe. The magnets slows down in the center because as the metal falls it induces an emf in circular direction in the copper which in turn generates its own magnetic field under the action of Faraday’ law of electromagnetics but opposite in direction as determined by the Lenz’s law. This induces opposite magnetic field interacts with the magnet and tries to slow it down. Cool haa !!