Jalousie window of the house to increase security and prevent the slats from falling out. They are currently the only jalousie window in the United States certified to withstand a Category 5 Hurricane. Many companies manufactured jalousie windows during the 20th century, and there are multiple surviving examples of advertisements from this period which demonstrate how the windows were marketed to consumers. The advertisements tended to stress how jalousie windows provide ventilation, privacy, rain-proofing, and an extra room in winter. Companies like StormMaster claimed their jalousies provided "winter warmth and summer comfort." Others, like Ludman WindoTite, promoted their product by declaring how
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