demagnetise
/'di:'mægnitaiz/ Cách viết khác : (demagnetise) /'di:'mægnitaiz/
Definition
- Verb:
- To remove magnetic properties: To make an object nonmagnetic by eliminating its magnetic field or alignment.
- To erase magnetic data: To clear information stored on a magnetic medium, such as a tape or hard drive.
Usage and Examples
Verb (General Use):
- You must demagnetise the screwdriver before working on the sensitive electronics.
- The technician will demagnetise the metal parts to prevent interference.
Verb (Data Storage Context):
- A strong magnet can demagnetise a credit card's stripe, rendering it useless.
- The old method to completely erase the drive was to demagnetise it using a powerful degausser.
Advanced Usage
- Technical/Physics Context: The process involves subjecting a magnetized material to a reversing or alternating magnetic field to reduce its net magnetization to zero.
- To properly calibrate the instrument, they had to demagnetise the core sample.
Variants and Related Words
- Demagnetize (verb): The preferred spelling in American English; identical in meaning to 'demagnetise'.
- Demagnetisation/Demagnetization (noun): The act or process of demagnetising.
- The demagnetisation of the ship's hull was a crucial wartime procedure.
- Degauss (verb): A specific technical synonym, often used for ships or bulk erasure of magnetic media.
- They needed to degauss the entire tape library.
Synonyms
- Degauss (specific to erasing data or neutralizing magnetic fields on large objects).
- Erase (in the specific context of magnetic storage media).
Related Phrasal Verbs/Compounds
(This word does not commonly form phrasal verbs. Its core meaning is typically used as a standalone verb.)
Related Idioms
(There are no common idioms specifically using the word 'demagnetise'.)
Verb
-
make nonmagnetic; take away the magnetic properties (of)
-
demagnetize the iron shavings
-
they degaussed the ship
-
-
erase (a magnetic storage device)
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