faraday
Definition
Noun 1. A unit of electrical charge: In electrochemistry, a faraday is a unit of electrical charge equal to the charge of one mole of electrons (approximately 96,485.33212 coulombs). It is used to calculate the amount of substance altered at an electrode during electrolysis. 2. A surname, specifically of Michael Faraday: The name refers to the English scientist Michael Faraday, renowned for his foundational contributions to electromagnetism and electrochemistry.
Usage Examples
- As a scientific unit:
- One faraday of charge will deposit one gram-equivalent of a substance during electrolysis.
- The constant, denoted by F, is called the Faraday constant.
- Referring to the person:
- The principles discovered by Faraday underpin much of modern electrical technology.
- The Faraday cage is named after the physicist Michael Faraday.
Advanced Usage
- Faraday constant (F): The physical constant representing the magnitude of electric charge per mole of electrons. It is the bridge between macroscopic electrical measurements and microscopic chemical changes.
- The value of the Faraday constant is crucial for precise electrochemical calculations.
- Faraday's law of induction: A fundamental law of electromagnetism stating that a changing magnetic field will induce an electromotive force (voltage) in a closed circuit.
- Electric generators operate on the principle of Faraday's law of induction.
- Faraday cage: An enclosure made of conductive material that blocks external static electric fields.
- Sensitive electronic equipment is often shielded inside a Faraday cage.
Variants and Related Words
- Faradaic (adjective): Relating to or involving electric charge transfer in electrochemical reactions.
- A Faradaic process involves electron transfer across the electrode-electrolyte interface.
- Non-Faradaic (adjective): Relating to electrochemical processes where no net charge transfer occurs, such as the charging of an electrical double layer.
Synonyms
- (For the unit): Faraday constant (when referring to the specific numerical value).
- (For the person): Michael Faraday (full name).
Related Phrases and Compounds
- Faraday effect: The rotation of the plane of polarization of light when it passes through a material in a magnetic field.
- Faraday's laws of electrolysis: Two quantitative laws that describe the relationship between the amount of electrical charge passed through a substance and the mass of the material liberated at an electrode.
Noun
-
the English physicist and chemist who discovered electromagnetic induction (1791-1867)
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