[ad_1] A cupola is a cylindrical furnace used to melt metals like iron and bronze. It is filled with alternating layers of metal and coke, and fluxing materials may also be added. Cupolas were used in China during the 3rd century BC and in Europe from the 17th century onwards. When in use, it is […]
[ad_1] Vredefort Dome is a UNESCO World Heritage Site and the largest confirmed impact crater on Earth, over 185 miles in diameter. It is the second oldest known crater, formed by an asteroid during Earth’s Paleoproterozoic era, and may have released enough oxygen to lead to the evolution of cyanobacteria. The asteroid was likely 6 […]
[ad_1] Radar domes protect radar equipment from the elements and people from rotating antennas. Radar devices use radio waves to identify objects and often require large dishes. Radar domes also protect dishes and electronics from dirt, rain, and ice. They keep people away from moving dishes and optimize surfaces exposed to air friction. Aircraft use […]
