31. But there is something more at work, something that may shed light upon both men _ and even on America. 32. Let the sun shine in : Exposure to bright light upon awakening will help your child's sleep rhythms adjust. 33. So if one shines a little low-frequency light upon a metal, a few low energy electrons are ejected. 34. However, it can cause emission of visible light upon interaction with matter, such as in Cherenkov radiation and radioluminescence. 35. The great poets of this age were viewed as a source of revelation and light upon the Christian mysteries to come. 36. Merck's letters are particularly interesting and instructive, and throw much light upon the literary conditions of his time. 37. Thus, these nicknames throw light upon Ze'era's ascetic piety ( B . M . 85a ). 38. The two parallel narratives, linked by Almasy's mind, unfold simultaneously, and each sheds light upon the other. 39. Luciferins typically undergo an enzyme-catalysed oxidation and the resulting excited state intermediate emits light upon decaying to its ground state. 40. When its Egyptian hieroglyphs were compared with those of the Rosetta Stone, it threw great light upon the Egyptian consonantal alphabet.