Technically speaking, the K-Horn's folded bass " corner horn " can be described as a bifurcated trihedral ( floor and two walls to form the trihedral corner ) exponential wave transmission line.
12.
Technically speaking, the K-Horn's folded bass " corner horn " can be described as a bifurcated trihedral ( floor and two walls to form the trihedral corner ) exponential wave transmission line.
13.
The most efficient way to reflect radar waves back to the emitting radar is with orthogonal metal plates, forming a corner reflector consisting of either a dihedral ( two plates ) or a trihedral ( three orthogonal plates ).
14.
Trihedral's customers are in industries including fresh water / wastewater, subsea oil production, air traffic management monitoring systems, fire station and 911 emergency alerting systems, national broadcast networks, marine systems, manufacturing, and food & beverage.
15.
They are particularly important in open air archaeological sites ( Keelley suggested that they are less common in cave sites . ) Hand axes, chopping tools and trihedral picks are considered " core " utensils, which were commonly manufactured out of stones, blocks or rock nodules.
16.
The ends are trihedral ( i . e ., composed of three planes ) sections of rhombic dodecahedra, with the dihedral angles of all adjacent surfaces measuring 120? the angle that minimizes surface area for a given volume . ( The angle formed by the edges at the pyramidal apex, known as the tetrahedral angle, is approximately 109?28'16 " ( arccos ( " 1 / 3 ) } } ) .)
17.
Finally, the suture between the premaxilla and parietal bone is located around orbital midlength . " P . westburyensis " also possesses a unique combination of characters, including : low dentary alveolar count including only 18 postsymphysial alveoli; teeth fully trihedral in cross-section, possessing a flat, anteroposteriorly broad labial surface lacking enamel ridges; relatively slight mediolateral expansion of premaxilla and maxillary caniniform region; six premaxillary alveoli; lack of anisodont premaxillary dentition; lack of diastema between maxillary and premaxillary alveolar rows; and cervical centra lacking ventral ridge.
18.
They diagnosed " P . carpenteri " based on a single autapomorphy-unlike all other thalassophoneans other than the proposed neotype of " P . brachyspondylus ", the dorsal surface of the surangular lacks any fossa, and in contrast to all other specimens of " Pliosaurus " faces dorsally, not inclined to face dorsolaterally . " P . carpenteri " also possesses a unique combination of characters, including : low dentary alveolar count including only 18 postsymphysial alveoli, and a total count of 27; intermediate low count of syphysial alveoli including only 9; teeth fully trihedral, possessing a flat, anteroposteriorly broad labial surface lacking enamel ridges; mediolateral expansion of caniniform regions of the premaxilla and maxilla relatively pronounced, although this might be due to crushing; six closely spaced premaxillary alveoli; anisodont premaxillary dentition; diastema present between maxillary and premaxillary alveolar rows; premaxilla parietal suture located level with the anterior region of the orbit; cervical centra lacking ventral ridge; and epipodials with highly convex proximal surfaces.
