unredden

To cause to stop being red.

Ils avoient eu la bonté de me faire dire plusieurs fois qu’ils vouloient me voir dès le lendemain de ma quarantaine finie. Et moi, qui savois la crainte que le roi avoit de la petite vérole, je résistai jusqu’à un commandement absolu, auquel il fallut obéir, quoique fort rouge, à quoi le grand froid contribuoit beaucoup, quelques drogues qu’on m’eût fait employer pour me dérougir.

Moi aussi j’ai chaud, et je possède cette supériorité ou infériorité sur vous que je m’embête d’une façon gigantesque. Je suis venu ici pour faire acte d’obéissance, parce qu’on m’a dit que l’air pur des montagnes me dérougirait et me calmerait les nerfs.

To correct for redshift.

Let me first ask one question: Who cares what the interstellar dust is made of? The typical optical astronomer couldn’t care less, for if you simply tell him the reddening law, particularly the ratio of total to selective extinction, he can unredden his clusters, correct the distance moduli, find the turnoff points, determine the age of the galaxy, and be happy! If this were the only astrophysical importance of the dust, I would stop now.

For values of τ >1 the difference between our correction factors and the standard reddening law is large, especially in the ultraviolet region of the spectrum. We think that our correction factors should be prefered^([sic]) over the standard reddening law to unredden galaxy spectra.

To cease being red; to lose redness.

Wer nahm das Rosa an? Wer wußte auch, daß es sich sammelte in diesen Dolden? Wie Dinge unter Gold, die sich entgolden, entröten sie sich sanft, wie im Gebrauch.

She was saying good-bye to her boy, her sad dark eyes pouring out tears as she clutched at me with her small hands, her Italian features showing all the hurt a mother feels when she fears for what is about to happen to her son in his quest for his own life. It made me cry, and I was ashamed of it. How could I go to West Point, the school of military leaders, with tears in my eyes? That was a place for men, not mama’s boys. Thank God, I had thirty miles for my eyes to unredden.