Search results
Results From The WOW.Com Content Network
A tip-up is a device used while ice fishing to suspend live or frozen bait at a set depth through a hole drilled in the ice with an auger, and detect when a fish strikes, without having to be in contact with this piece of gear. When a fish does take the bait, a flag "tips up" or the flag can "tip down" to signal the angler that a fish has taken ...
Polar-class icebreakers USCGC Polar Star (WAGB-10), USCGC Polar Sea (WAGB-11) are heavy icebreakers operated by the United States Coast Guard (USCG). These cutters, specifically designed for icebreaking, have reinforced hulls, special icebreaking bows, and a system that allows rapid shifting of ballast to increase the effectiveness of their icebreaking.
The curved bow allows Polar Star to ride up on the ice, using the ship's weight to break the ice. [4] The 13,000-ton (13,200-metric ton) Polar Star is able to break through ice up to 21 feet (6.4 m) thick by backing and ramming, and can steam continuously through 6 feet (1.8 m) of ice at 3 knots (5.6 km/h). [4]
Star trail image of the north polar region. A digital camera with a standard lens is mounted on the telescope and pointed at the celestial pole. Exposure is set at "B" (Bulb) and an image is taken while the camera is slowly turned around the polar axis. [7] This yields a kind of star-trail image.
A polar ice cap or polar cap is a high-latitude region of a planet, dwarf planet, or natural satellite that is covered in ice. [ 1 ] There are no requirements with respect to size or composition for a body of ice to be termed a polar ice cap, nor any geological requirement for it to be over land, but only that it must be a body of solid phase ...
Tip growth is an extreme form of polarised growth of living cells that results in an elongated cylindrical cell morphology with a rounded tip at which the growth activity takes place. Tip growth occurs in algae (e.g., Acetabularia acetabulum ), fungi ( hyphae ) and plants (e.g. root hairs and pollen tubes ).
Polar Star is the airplane used by polar explorer Lincoln Ellsworth, an early adaptor of airplanes for polar exploration and worked closely with Robert Peary. [1]Polar Star was an all-metal Northrop Gamma, which had a low-wing, reducing the effects of winds and wide skis that could be swapped with wheels or pontoons and a cruising range of 5,000 mi (4,300 nmi; 8,000 km).
The universal polar stereographic (UPS) coordinate system is used in conjunction with the universal transverse Mercator (UTM) coordinate system to locate positions on the surface of the Earth. Like the UTM coordinate system, the UPS coordinate system uses a metric-based cartesian grid laid out on a conformally projected surface.