In a recent presentation at a San Francisco conference on optics and photonics, researchers presented papers describing their successful tests of optical data transmission tools, which soon may replace current data centers’ thousands of miles of fiber-optic cables with overhead layer of infrared laser beams, lenses and mirrors.
In today’s world of readily available aerial imagery from satellites and drones, the future of high-resolution aerial imagery taken from manned, fixed-wing aircraft might be questioned, but consumers of all three types of images say there is still a big role for manned-aircraft imaging services.
The rise of cloud services, vendor partnerships and software refinement is supporting increasing multi-vendor interoperability of project data for the design, construction and management of roads and bridges.
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.