EditorialApparatus for treating horse glanders and William Hyde Wollaston's reflective goniometer, to measure the angles of minute crystals with precision. Copperplate engraving after a drawing by J. Farey from Abraham Rees' Cyclopedia or Universal Dictionary o...
EditorialA tractor plow passes a sun halo, caused by refraction of light through ice crystals, at sunrise in Sioux Falls, S.D., Dec. 22, 2022. (Alyssa Schukar/The New York Times)