Definition of mast (Entry 1 of 3) 1 : a long pole or spar rising from the keel or deck of a ship and supporting the yards, booms, and rigging. 2 : a slender vertical or nearly vertical structure (such as an upright post in various cranes)
Why is mast used on a ship?
Its purposes include carrying sails, spars, and derricks, and giving necessary height to a navigation light, look-out position, signal yard, control position, radio aerial or signal lamp. Large ships have several masts, with the size and configuration depending on the style of ship. Nearly all sailing masts are guyed.
Why is it called a mast?
Mast is the fruit of forest trees and shrubs, such as acorns and other nuts. The term derives from the Old English mæst, meaning the nuts of forest trees that have accumulated on the ground, especially those used historically for fattening domestic pigs, and as food resources for wildlife.
How do masts work?
Masts, antennae and base stations
The mast itself simply lifts the antennae to the height where they can transmit and receive radio waves. When you make a call your phone converts voice or data into radio waves that are transmitted to the nearest base station.
What are the 3 masts called?
Barque
Barque: A vessel that has at least three masts with the fore and main masts being square. Today many “sailing school” ships are barques.
What language is mast?
French Translation of “mast” | Collins English-French Dictionary.
What is mast cell?
Mast cells are immune cells of the myeloid lineage and are present in connective tissues throughout the body. The activation and degranulation of mast cells significantly modulates many aspects of physiological and pathological conditions in various settings.
What’s a mast year?
A mast year denotes a season in which various species of trees synchronize their reproduction and drop large amounts of fruit and/or nuts – in this case, acorns. Mast years for oak trees occur periodically when weather, genetics, and available resources converge to encourage reproduction.
What is a mast season?
What the heck is a mast season? It is when the weather conditions over the summer are perfect for our native forests to flower heavily and produce a bumper crop of seed. This is most noted in the beech forests of the South Island but seems to have a similar impact on many of our native trees.
Are mobile masts safe?
The Department of Health and the Mobile Operators Association insist that British masts conform to international safety standards. In fact Ofcom found they were using just a tiny fraction of thier permitted output.
How many masts does a ship have?
A full-rigged ship or fully rigged ship is a sailing vessel’s sail plan with three or more masts, all of them square-rigged. A full-rigged ship is said to have a ship rig or be ship-rigged. Such vessels also have each mast stepped in three segments: lower mast, top mast, and topgallant mast.
Do 5G masts need planning permission?
The same general rules for installing telecoms equipment apply to both broadband infrastructure (such as cables and cabinets) and mobile infrastructure (3G, 4G and 5G masts and antennae). To install infrastructure, telecoms operators may require: planning permission; and.
What is a boat with 2 masts called?
Schooner: A schooner is a sailboat with at least two masts, with the forward mast (foremast) being a bit shorter than the main mast. Although a schooner can have more than two masts, most were just two.
What is a two-masted ship?
A brigantine is a two-masted sailing vessel with a fully square-rigged foremast and at least two sails on the main mast: a square topsail and a gaff sail mainsail (behind the mast). The main mast is the second and taller of the two masts.
What are ships with sails called?
A sailing ship is a sea-going vessel that uses sails mounted on masts to harness the power of wind and propel the vessel.
Is a mast cell a WBC?
What are mast cells? Mast cells are a type of white blood cell – together, our white blood cells play a major role in our immune system, helping us fight off infection and other invaders. Mast cells are packed with histamine, a chemical released when you have an allergic reaction.
What are examples of mast cells?
Mast cells are located at the boundaries between tissues and the external environment, for example, at mucosal surfaces of the gut and lungs, in the skin and around blood vessels.
Is mast cell a leukocyte?
What Are Mast Cells? Mast cells are leukocytes that are derived from haematopoietic progenitor cells.
Is 2021 a mast year?
This is because 2021 is a “mast year,” when the trees have had a bumper crop of nuts. Mast is an old word referring to all of the nuts in the forest including acorns, beechnuts, butternuts and walnuts.
What is mast fruiting?
Mast fruiting is the synchronous heavy fruiting of a plant species at intervals greater than 1 year (Kelly & Sork, 2002). Mast fruiting is exhibited primarily by iteroparous perennial woody plants and is best known to occur in plants from temperate ecosystems (e.g. many Fagaceae, Pinaceae; Sork et al.
Why do trees have mast years?
In subsequent low to no yield years, wildlife populations decrease as food becomes scarce. Then in a mast year, the overflowing harvest will more than feed the forest critters and ensure some seeds left to grow into future oak trees.
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