How do blenders use electromagnets

Both 5GHz and 2. It is perfectly safe. That is literally a , times higher frequency than what Wi-Fi transmits on, 2.

Cell phone towers are still relatively new, and many people are understandably concerned about whether the RF waves they give off might possibly have health effects. If you live within a quarter mile of a cell phone antenna or tower, you may be at risk of serious harm to your health, according to a German study cited at www.

This effect generally diminished with distance from the tower and was almost negligible after about feet. Radiation emitted by Mobile Towers Ionizing radiation is high-frequency radiation that is known to cause cancer. It may, too, become the cause of health issues like cancer and brain tumors when the human body is exposed to it for long durations of time.

Mobile phone towers in residential areas are harmful if they do not comply with the norms and the emission if higher than permissible limits. By wrapping the same wire many times around a cylinder, say steel cylinder, the magnetic field due to the wires can become quite strong. Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Coursework What is an electromagnetic crane used for?

Ben Davis March 24, What is an electromagnetic crane used for? How well will the crane with an electromagnet work? How does an electromagnetic lift work? Do blenders use electromagnets? Do blenders give off radiation? What appliances electromagnetism is applied? How is electromagnetism applied in the refrigerator? How does electromagnetism affect our daily life? Can electromagnets be turned on and off? Magnetic objects such as paperclips will get pulled toward the magnet if they are placed in this field.

Anything that is not magnetic, such as the paper and the plastic bag, is not affected either. Each pole of a bar magnet has a different charge. In magnets, opposite charges are attracted to each other while charges that are the same repel or push away from each other.

Did you know that the earth also has a magnetic field? A magnet is a solid object, usually a rock or piece of metal, that can push or pull objects made of iron. Go on a magnet hunt around your house to find out what types of objects are magnetic. Test each object you wrote down by holding them close to a magnet, such as a horseshoe or bar magnet. Note: Never use magnets on or near computers, cassette tapes, discs, or other electronic devices because it could damage the magnets inside of them!

Mark the items on your lists that stick to the magnet. Did you learn anything from the results of your experimenting that proved some of your predictions to be false?

Can you make a conclusion about magnets from your results? What were the objects that are attracted to your magnet made of? Most magnetic objects contain metal, but not all metal objects are attracted to magnets! Metals such as iron, nickel, and cobalt are magnetic. Steel is also magnetic, because it contains iron. Metals including aluminum, silver, and brass are not magnetic. Plastic, cloth, and other materials are not magnetic.

Where some of your predictions correct? Switch off the current and the object crashes to the ground. In the home, by far the most common use of electromagnets is in electric motors. Think of all of those bits of electrical equipment with some kind of electric motor: vacuum cleaners, refrigerators, washing machines, tumble driers, food blenders, fan ovens, microwaves, dish-washers, hair driers.

The list is a long one, and when you start thinking more widely about electric motors in cars, lawn-mowers and a whole host of industrial applications, it becomes obvious that this application of electromagnets is extensive and extremely important to our daily lives.

The question of how electric motors work builds on the basics of magnetism introduced here, and is usually worked on in later years. Electromagnetic door bells are make and break devices which work via an electromagnet. There is one electric circuit containing two switches. One is a conventional push-button switch. The second has two parts, a spring and an electromagnet. The alternating action of the spring and the electromagnet makes and breaks the circuit for as long as the push-button switch is pressed.

An electromagnetic relay consists of two circuits. The first circuit contains a simple electromagnet which requires a relatively small current to make it work. When the switch is closed, there is an electric current through the coil of wire and the iron rocker arm is attracted to the electromagnet. The arm rotates about the pivot and closes a switch to complete the second circuit and the motor starts up — the motor requires a much larger current. When the switch in the first circuit is opened the electromagnet releases the rocker arm and the switch springs open again.

The motor circuit is now broken. The interactions of magnets serve as a template for the interactions of electromagnets. The similarity of the field around a bar magnet to the field around a coil of wire in which there is an electric current is one building block.