Emergency vehicle lighting is one or more visual warning lights fitted to a vehicle for use when the driver wishes to convey to other road users the urgency of their journey, to provide additional warning of a hazard when stationary, or in the case of law enforcement as a means of signalling another driver to stop for interaction with an officer.
Grossular dodecahedron, .7 cm across, from Coahuila, Mexico. Grossular is a calcium-aluminium species of the garnet group of minerals. It has the chemical formula of Ca3Al2(SiO4)3 but the calcium may, in part, be replaced by ferrous iron and the aluminium by ferric iron.
Granularity is the level of depth represented by the data in a fact or dimension table in a data warehouse. High granularity means a minute, sometimes atomic grade of detail, often at the level of the transaction. Low granularity zooms out into a summary view of data and transactions. https://en.wikipedia.org/wiki/Granularity#Data_granularity http://www.information-management.com/news/5460-1.html.