Classical unified field theories accepted by physicists. Classical unified field theories Since the 19th century, some physicists, notably Albert Einstein, have attempted to develop a single theoretical framework that can account for all the fundamental forces of nature – a unified field theory. Classical unified field theories are attempts to create a unified field theory based on classical physics. In particular, unification of gravitation and electromagnetism was actively pursued by several physicists and mathematicians in the years between the two World Wars. This work spurred the purely mathematical development of differential geometry. This article describes various attempts at formulating a classical (non-quantum), relativistic unified
Unified Fire Authority contract cities in addition to the Unincorporated Salt Lake County. These cities wanted to play a more active role in the fire administration. In 2004, the department ceased operation as a County government entity and became the Unified Fire Authority. The Unified Fire Authority is the sponsoring agency of Urban Search and Rescue Utah Task Force 1, one of the 28 FEMA Urban Search and Rescue Task Forces in the United States. Managed daily by full-time staff of Unified Fire under the direction of the Federal Emergency Management Agency - Urban Search & Rescue, Response Directorate/Operations Division. Adopted Budget 2017