- How Water Towers Work (practical.engineering)
Clean water is one of humanity’s most fundamental needs, and those of us who live in urban areas usually get our water from some kind of centralized public system. Operating a water system is a major responsibility that has implications for public health and safety. In dense urban areas, a clean and abundant supply of water is an absolute necessity, not just for drinking, but also for sanitation and firefighting.
- Book of Revelation (Wikipedia)
The Book of Revelation, also erroneously called the Book of Revelations, is the final book of the New Testament (and therefore the final book of the Christian Bible). Written in Koine Greek, its title is derived from the first word of the text: apokalypsis, meaning ‘unveiling’ or ‘revelation’. The Book of Revelation is the only apocalyptic book in the New Testament canon. It occupies a central place in Christian eschatology.