Definition of "afterglow"

That the sunset in Egypt is gorgeous, every body knows; but I, for one, was not aware that there is a renewal of beauty, some time after the sun has departed and left all grey. […] everything begins to brighten again in twenty minutes;—the hills are again purple or golden,—the sands orange,—the palms verdant,—the moonlight on the water, a pale green ripple on a lilac surface: and this after-glow continues for ten minutes, when it slowly fades away.

1848, Harriet Martineau, chapter 2, in Eastern Life, Present and Past‎, volume 1, London: Edward Moxon, pages 17–18

Let my thoughts come to you, when I am gone, like the afterglow of sunset at the margin of starry silence.

1916, Rabindranath Tagore, translated by Rabindranath Tagore, Stray Birds‎, New York: Macmillan, verse 273, p. 77

Why did dusk and fir-scent and the afterglow of autumnal sunsets make people say absurd things?

1927, Lucy Maud Montgomery, chapter 1, in Emily’s Quest‎, New York: Bantam, published 1983, page 9

At Stirling, we obtained a wonderful silhouette view of the Wallace Monument, and the dark line of the Ochil Hills, and the castle stood out clearly against the afterglow of the sunset.

1950 January, Arthur F. Beckenham, “With British Railways to the Far North”, in Railway Magazine, page 5

The sun had just gone down, and its afterglow was backlighting the city, which formed low cliffs around the bucolic void to the idle stockyards.

1969 March 31, Kurt Vonnegut, Jr., chapter 7, in Slaughterhouse-Five […] (A Seymour Lawrence Book), New York, N.Y.: Delacorte Press, page 141

Nothing will matter to you more than that [base]ball. It will hold you so completely that when you at last file out and return to the normal world, it will stay with you like the afterglow of a flashbulb that’s gone off in your eyes.

1984, Paul Auster (as Paul Benjamin), Squeeze Play, London: Faber & Faber, 1991, Chapter 19, p. 176

[…] he threw down his book, stretched his legs towards the embers in the grate, and clasped his hands at the back of his head, in that agreeable afterglow of excitement when thought lapses from examination of a specific object into a suffusive sense of its connections with all the rest of our existence […]

1871–1872, George Eliot [pseudonym; Mary Ann Evans], chapter 16, in Middlemarch […], volumes (please specify |volume=I to IV), Edinburgh, London: William Blackwood and Sons, book (please specify |book=I to VIII)

She herself had grown old as people should grow old—steadily and firmly. No interruptions, no belated after-glows and spasmodic returns.

1922, Elizabeth von Arnim, chapter 16, in The Enchanted April, New York: Washington Square Press, published 1995, page 216

Nor did he cease attentions once himself glutted: he remained a wooing protagonist even in the “afterglow,” as the sex manuals call it.

1981, Peter De Vries, chapter 6, in Sauce for the Goose, Penguin, published 1982, page 92

We were merely observers, getting totally absorbed in some exciting movie, our palms all sweaty, only to find that, after the houselights came on and we exited the theater, the thrilling afterglow that coursed through us ultimately meant nothing whatsoever.

2006, Haruki Murakami, “A Folklore for my Generation: A Pre-History of Late-Stage Capitalism”, in Philip Gabriel, Jay Rubin, transl., Blind Willow, Sleeping Woman‎, New York: Vintage, page 61