Classical unified field theories 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 field theory. For
Operation Unified Resolve Peshawar. Anti-coalition forces, led by former Afghan prime minister Gulbuddin Hekmatyar, have attacked coalition forces with their usual retinue of rockets, mines, and bobby traps. Hekmatyar has been organizing alliances between the remaining anti-coalition forces in the area and increasing their coordination. In addition to hunting the Taliban and al-Qaeda fighters, Operation Unified Resolve also distributes humanitarian assistance to the Afghan people in the nearby valleys. Operation Unified Resolve Operation Unified Resolve is an air and ground operation to flush out and trap al-Qaeda fighters hiding in the eastern Afghanistan provinces. Launched on 23 June 2003, Operation Unified Resolve is