the same kind of glass they use for large glasss insulations in city's as when they pour the hot reflective metal normal glass would shatter this glass is known as fermats glass as this was the name if the inventor. There is another kind of glass where they use standard glass but user forgers glue to attach the glass over the metal when the drying process is complete
Lines of Latitude and Longitude are imaginary lines that straddle the World. They enable any position on the globe to be recorded or found. They are particularly important in the navigation of shipping using charts, to which is added satellite navigation.
latitude?
lines of latitude
Each 'meridian' is a line of constant longitude.
Every meridian of longitude is perpendicular to every parallel of latitude, and every parallel of latitude is perpendicular to every meridian of longitude.
Latitude.
The lines that intercept latitude lines are lines of longitude.
Latitude and longitude
Lines of Longitude
Longitude lines go vertically and latitude lines go horizontally.
Every parallel of latitude crosses every meridian of longitude.
Lines of latitude and longitude allows any position on the Earth to be plotted.
Latitude is side to side and longitude is up and down.