Dementia Is a Terminal Illness, But Palliative Care Often Poor. October 16, 2009 â A new study looking at the natural history of dementia into its end stages finds high rates of complications, high 6-month mortality rates, and a high number of distressing symptoms and aggressive interventions of questionable benefit.
Measuring Earthquakes. The vibrations produced by earthquakes are detected, recorded, and measured by instruments call seismographs. The zig-zag line made by a seismograph, called a seismogram, reflects the changing intensity of the vibrations by responding to the motion of the ground surface beneath the instrument.
A network of geological monitoring stations, each with instruments that measure how much the ground shakes over time called seismographs allow scientists to calculate an earthquake's time, location and magnitude. Seismographs record a zigzag trace that shows how the ground shakes beneath the instrument.