This page discusses the formation and characteristics of metamorphic rocks created through metamorphism, influenced by heat and pressure. It distinguishes between foliated and non-foliated types and e...This page discusses the formation and characteristics of metamorphic rocks created through metamorphism, influenced by heat and pressure. It distinguishes between foliated and non-foliated types and explores contact and regional metamorphism. Common examples like slate, schist, quartzite, and marble are highlighted, along with their applications in construction and art. Key concepts related to metamorphic rocks and their uses are emphasized throughout the lesson.
In 1820, the French polymath Jean Baptiste Fourier calculated how warm the earth’s surface had to be to emit as much radiation as it receives from the sun, so that the temperature of the planet could ...In 1820, the French polymath Jean Baptiste Fourier calculated how warm the earth’s surface had to be to emit as much radiation as it receives from the sun, so that the temperature of the planet could remain constant. Thus by the time of the American Civil War, it was well known that the absorption and emission of radiation in our atmosphere is due to a handful of gases that make up less than 1% of air.
