This boundary is known as the Bullen discontinuity, or sometimes as the Lehmann discontinuity. A few years later, in 1940, it was hypothesized that this inner core was made of solid iron; its rigidity was confirmed in 1971. The outer core was determined to be liquid from observations showing that compressional waves pass through it, but elastic shear waves do not â or do so only very weakly.
Flannery Literary is a Chicago area literary agency representing writers of books for children and young adults because the most interesting, well-written, and time-honored books are written with young people in mind.
Publishing Invented a Brand New Literary Genre for 18-25 Year Olds. Critics may not believe the hype, but millions of readers do. New Adult(NA) fiction is one of publishing's newest and most controversial genres. It's a little like Young Adult fiction, but for people who are actually young adults. Yet, far from being the repackaged chick lit and sexed-up young adult (YA) it is often dismissed as, the emerging genre is full of strong writers and stories who clearly address the issues so many 20-somethings face.