Eureka (word) "Eureka! Eureka!" after he had stepped into a bath and noticed that the water level rose, whereupon he suddenly understood that the volume of water displaced must be equal to the volume of the part of his body he had submerged. (This relation is "not" what is known as Archimedes' principle—that deals with the "upthrust" experienced by a body immersed in a fluid.) He then realized that the volume of irregular objects could be measured with precision, a previously intractable problem. He is said to have been so eager to share his discovery that he leapt out of his bathtub
The Provoked Wife not long before in a dispute with management. The actors' cooperative boasted the established star performers of the age, and Vanbrugh tailored "The Provoked Wife" to their specialties. While "The Relapse" had been robustly phrased to be suitable for amateurs and minor acting talents, he could count on versatile professionals like Thomas Betterton, Elizabeth Barry, and the rising young star Anne Bracegirdle to do justice to characters of depth and nuance. "The Provoked Wife" is a comedy, but Elizabeth Barry who played the abused wife was especially famous as a tragic actress, and for her power of "moving the passions",