Electromagnetic radiation is made when an atom absorbs energy. The absorbed energy causes one or more electrons to change their locale within the atom. When the electron returns to its original position, an electromagnetic wave is produced.
What creates electromagnetic?
electromagnetic field, a property of space caused by the motion of an electric charge. A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field.
What items produce electromagnetic waves?
Many household appliances produce electromagnetic fields: low consumption light bulbs, television and computer screens, electric radiators and even electric blankets. All of these common objects emit electric or electromagnetic fields and / or function by using them.
What are the major source of electromagnetic field?
Our electricity power supply and all appliances using electricity are the main sources of ELF fields; computer screens, anti-theft devices and security systems are the main sources of IF fields; and radio, television, radar and cellular telephone antennas, and microwave ovens are the main sources of RF fields.
What produces a magnetic field?
As Ampere suggested, a magnetic field is produced whenever an electrical charge is in motion. The spinning and orbiting of the nucleus of an atom produces a magnetic field as does electrical current flowing through a wire. The direction of the spin and orbit determine the direction of the magnetic field.
Does Cell Phone produce electromagnetic waves?
This radiation includes radio waves, microwaves, ultraviolet, infrared, X-rays and gamma rays. … When the mobile phone is turned on, it emits radio waves that consist of radio frequency (RF) energy—a form of electromagnetic radiation moving at the speed of light.
What devices produce radiation?
Your gadgets & the radiation they emit
- Laptops. Radiation source: Laptop radiation is due to its need to be connected to WiFi and Bluetooth signals for browsing the internet or sending/transmitting files. …
- WiFi Routers. …
- Tablets. …
- Earphones. …
Do phones give off radiation?
Do cell phones give off (emit) radiation? Yes – cell phones and cordless phones use radiofrequency radiation (RF) to send signals. RF is different from other types of radiation (like x-rays) that we know can be harmful. We don’t know for sure if RF radiation from cell phones can cause health problems years later.
What are electromagnetic fields made of?
Electromagnetic fields are made out of photons. The magnitude and direction of the electromagnetic field intensity at any point is directly proportional to the magnitude and direction of the force of the photon at that point.
Does everything have an electromagnetic field?
All materials experience magnetism, some more strongly than others. Permanent magnets, made from materials such as iron, experience the strongest effects, known as ferromagnetism. With rare exception, this is the only form of magnetism strong enough to be felt by people.
Do humans have an electromagnetic field?
Electromagnetic fields are present everywhere in our environment but are invisible to the human eye. Electric fields are produced by the local build-up of electric charges in the atmosphere associated with thunderstorms.
What produces magnetism in human body?
The currents flow through the general mass of fluids and tissues of the body, called the “volume conductor.” They can be fluctuating (ac) and pro- duce a fluctuating magnetic field, or they can be steady (dc) and produce a steady magnetic field.