reluctivityn.

Brit.

/ˌriːlʌkˈtɪvᵻti/, U.S.

/ˌriˌləkˈtɪvədi/

Origin: Formed within English, by derivation. Etymons: reluctance n., -ivity suffix.

Etymology: < reluct- (in reluctance n.) + -ivity suffix (compare quot. 1892). N.E.D. (1906) gives the pronunciation as (relɒkti·vĭti) /rɛlʌkˈtɪvɪtɪ/.

One of the physical parameters of a magnetic material, equal to the reluctance per unit volume and equivalent to the reciprocal of magnetic permeability.The word does not occur in Heaviside's original paper of 1888, of which quot. 1892 is a revised reprint: cf. quot. 1888 at reluctance n. 5.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > resistance to conduction

resistivity1885

reluctance1888

reluctancy1888

resistance1888

reluctivity1892

the world > matter > physics > electromagnetic radiation > magnetism > [noun] > magnetic field > lines of magnetic force > opposition to passage of

reluctance1888

reluctancy1888

magnetic viscosity1892

reluctivity1892

1892 O. Heaviside in Electr. Papers II. xxxix. 168 I would suggest that what is now called magnetic resistance be called the magnetic reluctance; and when referred to unit volume, the reluctancy (or reluctivity).

1896 S. P. Thompson Dynamo-electr. Machinery (ed. 5) 119 The reluctance or resistance of a circuit in such case is proportional..to the reluctivity or resistivity of the material.

1917 C. P. Steinmetz Theory & Calculations Electr. Circuits iii. 49 Very impure materials, like cast iron, may give throughout a curved reluctivity line.

1970 Direct-current Magn. Measurem. Soft Magn. Materials (Amer. Soc. Testing & Materials) 6 Permeability (the reciprocal of reluctivity) is a third important parameter.

2006 C. S. Schneider in B. M. Caruta Trends Materials Sci. Res. i. 17 As magnetization increases the reluctivity increases and becomes infinite at saturation.

This entry has been updated (OED Third Edition, December 2009; most recently modified version published online March 2022).

单词	reluctivity
释义	reluctivityn. Brit. /ˌriːlʌkˈtɪvᵻti/, U.S. /ˌriˌləkˈtɪvədi/ Origin: Formed within English, by derivation. Etymons: reluctance n., -ivity suffix. Etymology: < reluct- (in reluctance n.) + -ivity suffix (compare quot. 1892). N.E.D. (1906) gives the pronunciation as (relɒkti·vĭti) /rɛlʌkˈtɪvɪtɪ/. One of the physical parameters of a magnetic material, equal to the reluctance per unit volume and equivalent to the reciprocal of magnetic permeability.The word does not occur in Heaviside's original paper of 1888, of which quot. 1892 is a revised reprint: cf. quot. 1888 at reluctance n. 5. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > resistance to conduction resistivity1885 reluctance1888 reluctancy1888 resistance1888 reluctivity1892 the world > matter > physics > electromagnetic radiation > magnetism > [noun] > magnetic field > lines of magnetic force > opposition to passage of reluctance1888 reluctancy1888 magnetic viscosity1892 reluctivity1892 1892 O. Heaviside in Electr. Papers II. xxxix. 168 I would suggest that what is now called magnetic resistance be called the magnetic reluctance; and when referred to unit volume, the reluctancy (or reluctivity). 1896 S. P. Thompson Dynamo-electr. Machinery (ed. 5) 119 The reluctance or resistance of a circuit in such case is proportional..to the reluctivity or resistivity of the material. 1917 C. P. Steinmetz Theory & Calculations Electr. Circuits iii. 49 Very impure materials, like cast iron, may give throughout a curved reluctivity line. 1970 Direct-current Magn. Measurem. Soft Magn. Materials (Amer. Soc. Testing & Materials) 6 Permeability (the reciprocal of reluctivity) is a third important parameter. 2006 C. S. Schneider in B. M. Caruta Trends Materials Sci. Res. i. 17 As magnetization increases the reluctivity increases and becomes infinite at saturation. This entry has been updated (OED Third Edition, December 2009; most recently modified version published online March 2022). < n.1892
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