The two photocells are linked to the Tree: the Pre-Stage, and the Stage lights. When the car inches forward and blocks the first photocell, the Pre-Stage light comes on, indicating that the driver is close to the starting line. Most tracks have a rollout, or distance between the Pre-Stage and Stage beams of 6-8.
Batten disease is named after the British pediatrician Frederick Batten, who first described it in 1903. Also known as Spielmeyer-Vogt-SjÃ¶gren-Batten disease, it is the most common form of a group of disorders called neuronal ceroid lipofuscinosis (or NCLs).
Diseases named after people are capitalized. Some disease names are capitalized because they are named after the person who discovered them. For example, Alzheimerâs disease is named after a German doctor named Alois Alzheimer, and Downâs syndrome is named after a British doctor named John Langdon Down.eturning to capitalization, most disease names arenât capitalized. They are often named based on some hallmark of the condition. Diabetes, for example, was named because of what happens to people who have the disease.