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Communication takes on many forms. It can be by a system of flashing lights, a movement of an indicator, or by reproducing sound.
A signal light can be made using an electric lamp, an electrical source and a switch.
The wire separating the lamp and the switch can be many miles and still work.
In the same way, the electric current can be made to power a solenoid (electromagnet) and deflect a needle.
Using fine control of an electric current, sound can be modulated onto a voltage and reproduced at the other end using a coil and diaphragm, a telephone.
Electricity and magnetism form the basis of electromagnetic waves, known as radio waves. There are many different ways of modulating the signal onto a carrier wave and many different frequencies that can be selected and separated.
The digital world is controlled by electricity being either 'on' or 'off', just two states, which can be manipulated very rapidly to form a code, containing masses of information.
Digital information can be sent using electricity (copper cables), or light (fiber optic), or radio. DAB, DTV, WLAN, Bluetooth, etc.
What else can I help you with?
Can you produce electricity even without magnetism?
yes we can produce electricity without magnetism by using semiconductor for example photo diode is used in solar cells.
What has the author Edward M Purcell written?
Edward M. Purcell has written: 'Electricity and magnetism' -- subject(s): Electricity, Magnetism, physics, textbook 'Electricity and magnetism' -- subject(s): Electricity, Magnetism
What has the author J E H Gordon written?
J. E. H. Gordon has written: 'A physical treatise on electricity and magnetism' -- subject- s -: Electricity, Magnetism 'A physical treatise on electricity and magnetism' -- subject- s -: Electricity, Magnetism
What is closely related to magnetism?
Electricity, magnetism and electricity are two aspects of a single force known as electromagnetism.
What is the difference between magnetism and electricity?
The difference between electricity and magnetism is that you must be in the same frame of reference as the electric field to experience electricity, because all that magnetism is, is electricity moving relative to you.Although they are two different forms of energy, you can use magnetism to create electricity and you can use magnetism to create electricity.Electricity is the flow of energy or current through a metallic substance. Magnetism is the attraction of the metallic molecules in a solid or substance.
What has the author Bernhard Kurrelmeyer written?
Bernhard Kurrelmeyer has written: 'Electricity and magnetism' -- subject(s): Electricity, Magnetism
What is required for electricity and magnetism?
Electricity is the movement of electrons between atoms. Magnetism only exists around moving electrons.
What two forces govern the movement of the planets and all other bodies in the universe?
Electricity, magnetism.
Are there electricity and magnetism in a computer?
Yes
What has the author Ernest Edward Brooks written?
Ernest Edward Brooks has written: 'Magnetism and electricity' -- subject(s): Electricity, Magnetism
What are some ways that electricity and magnetism can help us to communicate in your daily lives?
Electricity and magnetism enable the functioning of devices like cell phones, radios, and computers, allowing us to communicate through phone calls, texts, emails, and social media. These forces help transmit information quickly and wirelessly over long distances, making communication more convenient and efficient in our daily lives.
What property of matter gives rise to both electricity and magnetism?
Electric charge is the property of matter that gives rise to both electricity and magnetism.
