Consequently, the electromagnetic fields have plane-wave characteristics in local regions, except immediately adjacent to a caustic where there is a rapid transition from the wavelike behavior of the local plane-wave fields to the evanescent behavior beyond the ray path.

The analyte directly affects the optical properties of a waveguide, such as evanescent waves (electromagnetic waves generated in the medium outside the optical waveguide when light is reflected from within) or surface plasmons (resonances induced by an evanescent wave in a thin film deposited on a waveguide surface).

And what are theſe Fluxions? The Velocities of evaneſcent Increments? And what are theſe ſame evaneſcent Increments? They are neither finite Quantities, nor Quantities infinitely ſmall, nor yet nothing. May we not call them the Ghoſts of departed Quantities?

Some hold the evaneſcent increments to be real quantities, ſome to be nothings, ſome to be limits. As many Men, ſo many minds: Each differing one from another, and all from Sir Iſaac Newton.

[Leonhard] Euler emphasized that the derivative is the ratio of the evanescent differentials and said that the integral calculus was concerned with finding the function itself.

He cannot ſuppreſs his diſapprobation […] of thoſe evaneſcent echoes of ſchool philoſophy, faint-warbling through the grove of letters, to the injury of natural and ſcientific knowledge, and the annoyance of English literature.

If the Fluids moving in an Evaneſcent Artery [i.e., a capillary] appear Globular, I ſuppose its becauſe the Canal is round, which alters the Caſe much.

Here are Sholes and Sholes, of various Characters, and of the moſt diverſified Sizes; from the gigantic Whale, whoſe flouncings "tempeſt the Ocean," to the evaneſcent Anchovy, whoſe Subſtance diſſolves in the ſmalleſt Fircaſſee.

If in the middle of summer the water of Turkey Creek […] is whipped and beaten with a stick, and then if a fire-brand is passed over, a mist is enkindled and a faint evanescent flame runs over the entire width of the brook.

If we could remove everything from a piece of space, […] then there would still be quantum fluctuations of fields and virtual particles, bouncing to and fro against the wall of nothing. Ironically enough, this piece of space, filled with so many evanescent entities, is nowadays called vacuum. However, this vacuum is not nothing. It is a quantum vacuum to which the argument of the Ancient Greeks does not apply.

It is to be obſerved, farther, that when we annihilate any thing in our Mind, we conſider it as ſomething evaneſcent, and removed out of Sight; […]

But alas! how momentary was the bliss!—the evaneſcent viſion ſoon fled, and the youthful queen Mary, Queen of Scots] was arrayed in the melancholy garb of widowhood!

Leaves solitary or numerous, sometimes evanescent or rarely wanting, radical or cauline, alternate or occasionally whorled, simple, varying from a sheathing bract to a definite blade which is membranaceous, papyraceous, coriaceous or fleshy, flat or plicate, usually parallel-veined.

Evanescent

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