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Penumbra   Listen
noun
Penumbra  n.  
1.
An incomplete or partial shadow.
2.
(Astron.) The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light. Note: The faint shade surrounding the dark central portion of a solar spot is also called the penumbra, and sometimes umbra.
3.
(Paint.) The part of a picture where the shade imperceptibly blends with the light.






Collaborative International Dictionary of English 0.48








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"Penumbra" Quotes from Famous Books



... the bridges all their axes have an approximate parallelism, and that in the penumbra they are dispersed, radiating from the inside and the outside of the spot, giving rise to that striated appearance which is familiar to all observers ...
— James Nasmyth's Autobiography • James Nasmyth

... shade, darkness, penumbra, adumbration; prefiguration. Associated Words: sciagraphy, sciomachy, periscian, ...
— Putnam's Word Book • Louis A. Flemming

... their creed as they take their fashions, speak of Atheism as the outcome of foul life and vicious desires. In their shallow heartlessness and shallower thought they cannot even dimly imagine the anguish of entering the mere penumbra of the Eclipse of Faith, much less the horror of that great darkness in which the orphaned soul cries out into the infinite emptiness: "Is it a Devil that has made the world? Is the echo, 'Children, ye have no Father,' ...
— Annie Besant - An Autobiography • Annie Besant

... happened by the watch, being corrected from altitudes of the stars Rigel and Sirius observed in an artificial horizon, gave 148 deg. 371/2' for the uncorrected longitude of Preservation Island; which is 37' more than was deduced from the lunar distances in the Francis. The penumbra attending the earth's shadow is usually supposed to render this observation uncertain to two or three minutes of time, or more than half a degree ...
— A Voyage to Terra Australis • Matthew Flinders

... but they were then first made known, picturesquely and effectively, by a trial at some assizes which happened to fix the public attention.]), we really were such constructively by the place we assumed. If we did not submit to the deep shadow of eclipse, we entered at least the skirts of its penumbra. And the analogy of theatres was valid against us,—where no man can complain of the annoyances incident to the pit or gallery, having his instant remedy in paying the higher price of the boxes. But the soundness of this analogy we disputed. In ...
— The English Mail-Coach and Joan of Arc • Thomas de Quincey

... on the bumps of imagination and humour, which are strongly developed in M. de Balzac; the black hair, also lit up, shining and radiant, comes from the temples in bright waves, and gives singular light to the top of the head; the eyes steeped in a golden penumbra with tawny eyeballs, on a moist and blue crystalline lens like that of a child, send out a glance of astonishing acuteness; the nose, divided into abrupt polished flat places, breathes strongly and passionately, through large red nostrils; the mouth, large and voluptuous, particularly ...
— Honore de Balzac, His Life and Writings • Mary F. Sandars

... Captain Jemmison the danger, and remonstrated with him and the other officers upon the imprudence of leaving the ship at this juncture; but Jemmison, in a prettily rounded period, protested he saw no penumbra of danger, and that till he was called upon by Mars, he owned he preferred the charms ...
— Tales and Novels, Vol. V - Tales of a Fashionable Life • Maria Edgeworth

... the presiding intention. Examine closely what is in your mind when you speak of an action in course of accomplishment. The idea of change is there, I am willing to grant, but it is hidden in the penumbra. In the full light is the motionless plan of the act supposed accomplished. It is by this, and by this only, that the complex act is distinguished and defined. We should be very much embarrassed if we had to imagine the movements inherent in the actions of ...
— Creative Evolution • Henri Bergson

... him) in the manner of the more recent artists in words, retaining the precision of phrase and the measured judgments which are traditional in French literature, yet managing to envelop everything in a penumbra of emotional suggestion. Each expression of an idea is complete in itself; yet these expressions are often varied and constantly metaphorical, so that we are led to feel that much in that idea has remained unexpressed ...
— Winds Of Doctrine - Studies in Contemporary Opinion • George Santayana

... the three old and distorted people downstairs, and I tried to keep it upon that topic. The sombre reds and blacks of the room troubled, me; even with seven candles the place was merely dim. The one in the alcove flared in a draught, and the fire-flickering kept the shadows and penumbra perpetually shifting and stirring. Casting about for a remedy, I recalled the candles I had seen in the passage, and, with a slight effort, walked out into the moonlight, carrying a candle and leaving the door open, and presently returned with as many as ...
— The Country of the Blind, And Other Stories • H. G. Wells

... 'the crepuscular penumbra spreading her dim limbs over the boskage'; with 'jolly rabbits'; with a herd of 'gravid polled Angus'; and with the 'arresting, gipsy-like face of their swart, scholarly owner—as well known at the Royal Agricultural Shows as that ...
— A Diversity of Creatures • Rudyard Kipling

... members. In 1917 the membership was estimated at 75,000. Though this is probably a maximum rather than an average, nevertheless the members are mostly young men whose revolutionary ardor counterbalances their want in numbers. It is, moreover, an organization that has a wide penumbra. It readily attracts the discontented, the unemployed, the man without a horizon. In an instant it can lay a fire and put an entire police force ...
— The Armies of Labor - Volume 40 in The Chronicles Of America Series • Samuel P. Orth

... received a final answer. Greece is fighting for an empire over Turks. Ireland is fighting the British Empire to obtain the right to do what she wants in the world. The business penumbra of the United States has begun to cover Mexico. Five or six constituents of old Russian have cut free. But France has become imperial and would impose a ...
— Europe—Whither Bound? - Being Letters of Travel from the Capitals of Europe in the Year 1921 • Stephen Graham

... that it is more than a little difficult to mark their precise significance. Often they are mere fragments of themes, mere patches of harmonic color, evasive and intangible, designed almost wholly to translate phases of that psychic penumbra in which the characters and the action of the drama are enwrapped. They have a common kinship in their dim and muted loveliness, their grave reticence, the deep and immitigable sadness with which, ...
— Debussy's Pelleas et Melisande - A Guide to the Opera with Musical Examples from the Score • Lawrence Gilman

... wise as a dozen Solons, but they can not provide happiness by legislation. They may reach the summit of earthly glory and strive to seize the fulgurant prize that lured them on, only to find a penumbra—the shadow of a shade. And if conditions are actually known they prove nothing, generally. Each case must be specialized. Children and grown people, for that matter, are subjected to involuntary fasts and oftimes go hungry, ...
— Volume 10 of Brann The Iconoclast • William Cowper Brann

... the sun's limb. Because of the spindle-like form, I incline to think of a super-Zeppelin, but another observation, which seems to indicate that it was a world, is that, though it was opaque, and "eclipsed the sun," it had around it a kind of nebulosity—or atmosphere? A penumbra would ordinarily be a datum of a sun spot, but there are observations that indicate that this object was at a ...
— The Book of the Damned • Charles Fort

... darkness that may verily be felt. Fools talk of Atheism as the outcome of foul life and vicious thought. They, in their shallow heartlessness, their brainless stupidity, cannot even dimly imagine the anguish of the mere penumbra of the eclipse of faith, much less the horror of that great darkness in which the orphaned soul cries out into the infinite emptiness: "Is it a Devil who has made this world? Are we the sentient toys of an Almighty Power, who sports with our agony, and whose peals of awful mocking laughter ...
— Autobiographical Sketches • Annie Besant

... the next round numbers, Sexagesima, i.e., sixtieth, and Septuagesima, i.e., the seventieth." The reason for thus numbering these Sundays has been beautifully set forth in "Thoughts on the Services" as follows: "The Church now (Septuagesima Sunday) enters the penumbra of her Lenten Eclipse, and all her services are shadowed with the sombre hue of her approaching Season of humiliation. . . .We have turned our back upon dear old Christmas and the group of holy days ...
— The American Church Dictionary and Cyclopedia • William James Miller

... my desk in the dimness, writing this letter. I want to whisper low-toned, intimate talk, in keeping with this penumbra of the dusk. But it is just wishes like these which baffle all effort. They either get fulfilled of themselves, or not at all. That is why it is a simple matter to warm up to a grim battle, but not to an easy, ...
— Glimpses of Bengal • Sir Rabindranath Tagore



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