elevation angle
81Solar tracker — A solar tracker is a device for orienting a solar photovoltaic panel or concentrating solar reflector or lens toward the sun. The sun s position in the sky varies both with the seasons (elevation) and time of day as the sun moves across the sky.… …
82Angular mil — An angular mil, also mil, is a unit of angle. All versions of the angular mil are approximately the same size as a trigonometric milliradian. Contents 1 History 2 Mathematical principle 3 Use …
83Ordnance QF 25 pounder — Gun shown mounted on its firing platform, King Street West, Dundas, Hamilton, Canada. Type Field gun/Howitzer …
84ZSU-57-2 — Infobox Weapon name=ZSU 57 2 (Ob yekt 500) caption=ZSU 57 2 in Lubuskie Military Museum in Drzonów, Poland, 1 July 2007. origin=flagcountry|Soviet Union type=Self propelled anti aircraft gun is vehicle=yes designer=Design Bureaus of Omsk Works No …
85Geodesy — (pronEng|dʒiːˈɒdɪsi [OED] ), also called geodetics, a branch of earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three dimensional time varying… …
86Field artillery — [ Union Army gun squad at drill, c. 1860.] Field artillery is a category of mobile artillery used to support armies in the field. These weapons are specialized for mobility and tactical efficiency, and not for long range nor sheer destructive… …
8776 mm divisional gun M1902/30 — Infobox Weapon name=76 mm divisional gun M1902/30 caption=76 mm divisional gun M1902/30 in Hämeenlinna artillery Museum, Finland. origin=USSR type=field gun is ranged= is bladed= is explosive= is artillery=yes is vehicle= is UK= service= used by …
88152 mm gun M1910/34 — Infobox Weapon name=152 mm gun model 1910/34 caption=152 mm gun M1910/34 in the Artillery Museum, St Petersburg, Russia. origin=USSR type=field gun is ranged= is bladed= is explosive= is artillery=yes is vehicle= is UK= service= used by= wars=… …
89Lobe Secondaire — Les lobes secondaires sont les pics secondaires dans le diagramme d émission ou de réception d une antenne autre que le lobe principal ou le lobe arrière de celle ci. En effet, selon la configuration de l antenne, elle peut être directionnelle en …
90Lobe secondaire — Les lobes secondaires sont les pics secondaires dans le diagramme d émission ou de réception d une antenne autre que le lobe principal ou le lobe arrière de celle ci. En effet, selon la configuration de l antenne, elle peut être directionnelle en …
