For more, watch [Josh] describe his method in person after the break, or try flashing his code to an Arduino and make a waving cat of your own.

The Arduino controls what amounts to an upside-down 3D printer. Instead of a hot end pointing down, the mechanism has an electromagnet pointing up. A small washer in the base of each chess piece ...

THE electromagnet designed for the use of oculists by Dr. Haab, director of the Zurich eye clinic, and shown in the accompanying photographs, is the most powerful and efficient apparatus of this ...

anything that is battery powered. They work by a computer controller driving a set of fixed electromagnets around a magnet on an axle causing it to rotate. One of their key advantages is the ...

With the 2050 net-zero target approaching, several companies around the world have been hunting for creative ways to tackle ...

Description: A 15% discount of the total catalogue price is included. This pack contains the following: IEC 61000-3-2:2018+AMD1: 2020+AMD2:2024 CSV IEC 61000-3-3:2013+AMD1: 2017+AMD2:2021 CSV IEC TS ...

Electromagnets use electric current to generate a magnetic field which can be turned on or off as needed. They are made from a softer iron which quickly dissipates the induced magnetism after the ...

In a telegraph a switch opens and closes an electric circuit. In Morse's original design, the receiving device used an electromagnet, powered by the electric current in the circuit, to raise and ...

A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core ...

A 50-year-old idea about electromagnetic waves known as the Zel’dovich effect has been tested by physicists in the lab, and ...

This is mechanical energy in action. The mechanical energy is caused by the attractive force of the electromagnet. Now imagine a circle of electromagnets that you could turn on and off one after ...

Many objects around you contain electromagnets. They are found in electric motors and loudspeakers. Electric bells like the ones used in most schools also contain an electromagnet. The slideshow ...