Today scientists who deal with various materials make experiments in tensions and pressures, stresses and strains. Many of the products with which we are familiar are graded according to tests that indicate degrees of strength and endurance under use.
Log in to view this page
Not a subscriber to JSH-Online? Subscribe today and receive online access to The Christian Science Journal, Sentinel, and Herald including digital editions of the print periodicals, Web original articles, blogs, and podcasts, over 30,000 minutes of Sentinel Radio and audio chats, searchable archive going back to 1883! Learn More.