Did you know that Colonial Americans used large sheets of mica as glass for windows?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
xShadow zone : The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being b
Created in the first three minutes after the Big Bang, hydrogen and helium gave rise to all other elements in the universe. Stars made this possible. Through nuclear fusion, stars generated elements such...Read more