In Judaism, gratitude is an essential part of the act of worship and a part of every aspect of a worshiperâs life. According to the Hebrew worldview, all things come from God and because of this, gratitude is extremely important to the followers of Judaism. The Hebrew Scriptures are filled with the idea of gratitude.
What is an electromagnet? An electromagnet is a magnet that runs on electricity. An electromagnet works because an electric current produces a magnetic field. If a wire carrying an electric current is formed into a series of loops, the magnetic field can be concentrated within the loops.
The most common device for changing electrical energy into mechanical energy is the motor. Most motors use electromagnets to cause mechanical rotation, which can do work. Before Nikola Tesla invented the AC (alternating current) induction motor, no motors could change AC into mechanical energy. The most fundamental element of the AC motor is the electromagnet, a magnet made from electric current. In the first Demonstration Experiment below, you can make and demonstrate an electromagnet to show students the most basic method of changing electrical energy into mechanical energy.