“Each piece generates its own set of shadow and penumbra.”

“We, her husband and child, hide in the penumbra, partially seen and partially not.”

“These firms or businesses are not illegal in the strict sense, but there is a shadowy penumbra within which they live.”

“This unexpected finding could be of critical importance, particularly if the hyper C-2-DG uptake regions represent probable ischemic penumbrae.”

“The fact that he could see the sunspots with the naked eye and that he could make out the umbrae and penumbrae of the spots suggest that they must have been extremely large.”

“However, this planning study was performed with a treatment planning system that does not correctly account for the increased lateral secondary electron transport in lung tissue, resulting in too steep beam penumbrae.”

“Investigate umbras and penumbras produced in a solar eclipse and explain their differences and similarities.”

“Shadows and penumbras were instantaneously formed from the myriad of trees and hills that he surveyed through the window, and just as quickly vanished.”