The word "demagnetise" is spelled with an "e" after "g" and before "t" because of how the word sounds when pronounced. The IPA phonetic transcription of the word is /diːˈmæɡnətaɪz/, with the stress on the second syllable. The "e" is added to represent the soft "g" sound and prevent the second syllable from being pronounced like "gan." Without the "e," the second syllable would be pronounced as "gah-nuh," which would change the word's meaning.
Demagnetise is a verb that refers to the process of neutralizing or removing magnetic properties from an object or substance. It is commonly used in the context of demagnetizing magnets, magnetic tapes, hard drives, or any other materials that have become magnetized or are intended to be devoid of magnetic properties.
The process of demagnetising involves subjecting the object to an external magnetic field that gradually weakens or reverses the magnetization. This can be achieved through various methods, such as applying an alternating current to the object, using an electromagnetic coil, or employing specialized demagnetizing equipment.
Demagnetising is necessary when magnetized objects interfere with the proper functioning of electronic devices or when it is desired to restore them to their original non-magnetic state. For instance, in the case of magnetic tapes or hard drives, demagnetization is crucial to prevent data loss or corruption caused by unwanted magnetization.
Furthermore, demagnetising is also employed in scientific and industrial applications. For instance, when working with sensitive equipment or testing materials that should not possess magnetic properties, demagnetisation is crucial to ensure accurate results and prevent interference.
Overall, demagnetise is the action of removing or reducing magnetic properties from an object or substance, a process that is often essential to maintain optimal performance and reliability of various devices or materials.
To deprive of magnetic power or influence.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "demagnetise" is derived from the combination of the prefix "de-" and the word "magnetise".
The prefix "de-" is derived from the Latin word "de", meaning "down" or "away from". It is commonly used to indicate reversal, removal, or negation.
The word "magnetise" is derived from the noun "magnet", which comes from the Latin word "magnes" meaning "lodestone" or "magnet". The verb form "magnetise" refers to the process of converting or inducing magnetism in an object.
Therefore, when the prefix "de-" is added to "magnetise", it forms "demagnetise", meaning to reverse or remove the magnetism from an object.