Jalousie window interior of the house from jealous peering eyes. A patent for a basic louvered window was applied for in the US by a Joseph W. Walker, of Malden, Massachusetts, in 1900 and issued November 26, 1901, as patent no. 687705. A popular hand-cranked glass, aluminum, and screen window combination was later designed by American engineer Van Ellis Huff and found widespread use in temperate climates before the advent of air-conditioning. Jalousie windows were a popular feature in Mid-century modern houses, especially those built in warm and humid climates. Jalousie windows maximize natural ventilation by allowing airflow through the entire window
Types of volcanic eruptions Types of volcanic eruptions Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three different types of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that