Masonite is made with wood fibers from pressing wood chips. The wood fibers are steam cooked and molded under pressure to form the shape. It was patented in 1924 by William H. Mason, a friend and student of Thomas Edison, in Laurel, Mississippi.
There are many different uses for Masonite throughout the world, particularly for protecting floors and walls. A floor can be lined with rosin paper and then topped with Masonite. Masonite has been used in the past for house siding; however, when used externally, the product can swell and rot. A similar product called hardboard, made in the United Kingdom, was made by pressing waste paper and dates back to 1898.Learn More
Marble is a metamorphic rock. This means that it was formed out of another rock after eons of heat and pressure. Marble is formed out of pure limestone.Full Answer >
Lithium was discovered when Swedish chemist Johan August Arfvedson was analyzing petalite in 1817. He discovered that the alkali metal in the petalite had properties unlike the other known elements. One year later, William Brande and Humphry Davy were both able to isolate a pure sample of lithium.Full Answer >
As of 2014, geologists contend that granite is a plutonic rock resulting from deeply buried shale and sandstone that melted, partially melted or metamorphosed, depending on the category of granite in question. Igneous granite forcefully ripped through the Earth's crust, while metamorphic has no evidence of fluidity.Full Answer >
Magma rises to the surface because it is less dense than the surrounding rocks and a structural zone in the Earth's crust enables movement. When it reaches the surface, magma is referred to as lava. Magma may collect under the surface in an area called a magma chamber until it cools and forms igneous rock, or it may escape through the surface in a volcanic eruption.Full Answer >