Evanescent 1100 Words You Need Week 33 Day 3

Evanescent 1100 Words You Need Week 33 Day 3

Evanescent 1100 Words You Need Week 33 Day 3 with authentic materials and examples, synonyms, antonyms, illustrated flashcards and text-to-speech for GRE, TOEFL & IELTS

/ˌiː.vəˈnes.ənt/ US /ˌev.ə-/ (adj)

lasting for a short time, ephemeral, short-lived, impermanent, transient, fleeting, momentary, passing, brief

In electromagnetics, an evanescent field, or evanescent wave, is an oscillating electric and/or magnetic field that does not propagate as an electromagnetic wave but whose energy is spatially concentrated in the vicinity of the source (oscillating charges and currents). Even when there is a propagating electromagnetic wave produced (e.g., by a transmitting antenna), one can still identify as an evanescent field the component of the electric or magnetic field that cannot be attributed to the propagating wave observed at a distance of many wavelengths (such as the far field of a transmitting antenna).

Source: https://en.wikipedia.org/

Antonym: permanent

Adverb: evanescently

Noun: evanescence