Revelation 8 in the context of "Seven trumpets"

In the Book of Revelation, seven trumpets are sounded, one at a time, to cue apocalyptic events seen by John of Patmos (Revelation 1:9) in his vision (Revelation 1:1). The seven trumpets are sounded by seven angels and the events that follow are described in detail in Revelation 8–11. However, there are also many other messages, events and signs that occur before and after the trumpets that are described in the Book of Revelation, as this is only one section. According to Revelation 8:1–2 the angels sound these trumpets after the breaking of the seventh seal. These seals secured the apocalyptic document held in the right hand of Him who sits on the throne. The trumpets are referred to in Koine Greek as σάλπιγξ (sálpinx, salpinx); this was a straight, narrow bronze tube with a mouthpiece of bone and a bell; they do not closely resemble modern valve trumpets. The final three trumpets are sometimes called the "woe trumpets".