The process of transmitting electrical signals through wires involves the movement of electrons within the wire to convey information or power. Here’s a simplified explanation of the process:
The origin point generating an electrical signal, often voltage or current.
The process of representing information using variations in voltage or current.
The motion of electrons within a wire due to an applied electric field.
The slow net speed at which electrons move in a wire due to their random motion and collisions.
The transmission of the electrical signal along the wire through a chain reaction of electron movements.
The reduction in signal strength due to resistance and heat generation within the wire.
External factors causing distortion in the transmitted signal, including electromagnetic interference and noise.
The process of detecting, amplifying, and processing the transmitted signal for information recovery.
Utilizing the processed signal for various purposes such as display, sound production, or control of devices.
The process of transmitting radio waves through space involves the propagation of electromagnetic waves, specifically radio frequency (RF) waves. Here’s a simplified explanation of how this process works:
Certainly, here are the headings defined in one line each:
Creation of alternating current at a specific frequency.
Variation of radio wave properties to encode information.
Conversion of electrical signal to electromagnetic wave by the antenna.
Release of electromagnetic waves (radio waves) into the environment.
Travel of radio waves through the vacuum of space or atmosphere.
Course alteration due to obstructions and Earth’s curvature.
Capture of incoming radio waves by a receiving antenna.
Extraction of original information by reversing modulation.
Strengthening and refining of the received signal.
Utilization of processed signal for sound, display, or other applications.
A fax machine transmits images as electrical signals over phone lines. It encodes images, sends them as audio tones, and at the other end, decodes and prints the received image.
A cell phone emits radio signals encoding voice and data, which travel to a tower. The tower relays these signals, allowing the receiving phone to decode and display them.
The photophone conveys sound by changing light intensity with sound waves. The light carries the encoded sound, which is turned back into sound at the receiver.
