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A telegraph is a device for sending messages ("graph") over a distance ("tele"). Smoke signals sent by Native Americans qualify under this definition. So does the use of flags or signal fires. An electrochemical telegraph suggests that an electrochemical device, like an electrochemical cell or set of cells -- a battery -- is used to power up a system that transmits those messages.
By making and breaking an electrical circuit with a telegraph key, a solenoid on the other end can be made to "click" and be heard. All that is required is a system of "code" to transmit characters from one point to another down a telegraph wire between the key and the solenoid. The battery provides the power.
By using that same electrochemical source, a light could be powered up using the key. With the light and the same code used in sending messages over a wire, an individual could communicate between two points without a wire. Ships at sea could communicate with that light (though they usually use ship's power instead of a battery), or two scouts on a camping trip could communicate silently across a broad valley using flashlights.
What else can I help you with?
What is the difference between electrolyte and electrode?
An electrolyte is a substance that conducts electricity when dissolved in water or melted, typically consisting of ions. It facilitates the movement of charge within electrochemical cells. In contrast, an electrode is a conductor through which electric current enters or leaves an electrochemical cell, serving as the site for oxidation and reduction reactions. In summary, electrolytes enable charge transport, while electrodes are the interfaces for electrochemical reactions.
What is an electrochemical response?
An electrochemical reaction is any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances.
Can the metal plates in an electrochemical cell be made of the same metal?
Historically, no, each metal has its own redox potential and it is the difference between them that causes the flow of electrons with the electrolyte carrying the charge in the cell and the circuit between the metals that carries them outside the cell. However, there are now cells that do not use the metals to create the electrochemical potentials where the metals are only conductors wherein the metals are where the electrochemical reactions take place, but are not reactants. These have to have a membrane between the two reaction compartments to keep the two reactants from reacting in solution or in the gaseous state. These are more often referred to as batteries in my opinion, or as fuel cells.
Where do chemical reactions occur in electrochemical cells?
Chemical reactions occur at the electrodes of electrochemical cells. At the anode, oxidation occurs as electrons are released into the circuit, and at the cathode, reduction occurs as electrons are accepted from the circuit. This flow of electrons creates an electric current in the cell.
Can metals transfer electrons to other metals?
Metals can transfer electrons to other metals, but this often requires a difference in their electrochemical potential. In a scenario where two different metals are in contact, such as in a galvanic cell, the metal with a higher electrochemical potential will lose electrons, while the one with a lower potential will gain them. This electron transfer is a key principle in electrochemistry and is fundamental to the operation of batteries and other electrochemical devices.
What are the difference between LCR meter and electrochemical impedance spectroscopy?
LCR meter is a device. And electrochemical impedance spectroscopy is a method. So the difference between them are like the difference between pen and writing.
What is the difference between telegraph and telephone?
The difference is it take wire less reciver
What is the difference between buying TT and buying OD?
TT is telegraph transfer and OD is on demand.
What is the difference between anode and cathode in terms of their functions in an electrochemical cell?
In an electrochemical cell, the anode is where oxidation occurs, releasing electrons. The cathode is where reduction occurs, accepting electrons. This creates a flow of electrons from the anode to the cathode, generating electrical energy.
Whats the difference between the telegraph and the cell phones?
A telegraph relies on a wire to transmit a message to an individual on the receiving end. A cell phone is a wireless device that uses radio waves to transmit a signal.
What is the difference between telegram and a letter?
The difference between a telegram and a telegraph is that a telegram is a message communicated through delivered in written or printed message from while a letter is written or printed message usually in envelop sent by post.
How was early radio different from early telegraph system?
The difference is the telegraph required wires; the radio did not. But other then that, they were mostly the same.
Where does the telegraph come from?
The first working electrostatic telegraph was built by the English inventor Francis Ronalds but its origins go back much farther to pre electric versions (hand signals by sight which has nothing to do with the machine but same concept) and electrochemical-where electricity alone was not used in the design
What is the basic difference between solar cells and fuel cells?
A fuel cell is an electrochemical energy conversion device whiles a solar cell is a device that converts photons from the sun into electricity.
Factors affecting emf of electrochemical cells?
temperature,length of the wire,area,potential difference
What is the difference between the telegrah and the telephone?
The telegraph is a communication device that transmits messages using electrical signals over wires, while the telephone is a device that transmits voice conversations over wires or wirelessly. The key difference is that the telegraph communicates using coded messages, while the telephone allows for real-time spoken conversations.
When is electrochemical energy produced?
Electrochemical energy is produced when a redox reaction occurs within an electrochemical cell. This typically involves the transfer of electrons between a cathode and an anode, generating electricity as a result of the chemical reactions taking place.
