Eighteen or 18 may refer to:
- 18 (number)
- One of the years 18 BC, AD 18, 1918, 2018
2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number.
Because it forms the basis of a duality, it has religious and spiritual significance in many cultures.
Blast or The Blast may refer to:
- Explosion, a rapid increase in volume and release of energy in an extreme manner
- Detonation, an exothermic front accelerating through a medium that eventually drives a shock front
- A planned explosion in a mine, quarry or other situation in order to fragment rock
In physics, a fluid is a liquid, gas, or other material that may continuously move and deform (flow) under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied to them.
Although the term fluid generally includes both the liquid and gas phases, its definition varies among branches of science. Definitions of solid vary as well, and depending on field, some substances can have both fluid and solid properties. Non-Newtonian fluids like Silly Putty appear to behave similar to a solid when a sudden force is applied. Substances with a very high viscosity such as pitch appear to behave like a solid (see pitch drop experiment) as well. In particle physics, the concept is extended to include fluidic matters other than liquids or gases. A fluid in medicine or biology refers to any liquid constituent of the body (body fluid), whereas "liquid" is not used in this sense. Sometimes liquids given for fluid replacement, either by drinking or by injection, are also called fluids (e.g. "drink plenty of fluids"). In hydraulics, fluid is a term which refers to liquids with certain properties, and is broader than (hydraulic) oils.
Irish commonly refers to:
- Someone or something of, from, or related to:
- Ireland, an island situated off the north-western coast of continental Europe
- Éire, Irish language name for the island and the sovereign state
- Erse (disambiguation), Scots language name for the Irish language or Irish people
- Republic of Ireland, a sovereign state
- Northern Ireland, a constituent unit of the United Kingdom of Great Britain and Northern Ireland
- Irish language, a Celtic Goidelic language of the Indo-European language family spoken in Ireland
- Irish English, set of dialects of the English language native to Ireland
- Irish people, people of Irish ethnicity
Irish may also refer to:
Moisture is the presence of a liquid, especially water, often in trace amounts. Moisture is defined as water in the adsorbed or absorbed phase. Small amounts of water may be found, for example, in the air (humidity), in foods, and in some commercial products. Moisture also refers to the amount of water vapor present in the air. The soil also includes moisture.
The ounce () is any of several different units of mass, weight, or volume and is derived almost unchanged from the uncia, an Ancient Roman unit of measurement.
The avoirdupois ounce (exactly 28.349523125 g) is 1⁄16 avoirdupois pound; this is the United States customary and British imperial ounce. It is primarily used in the United States.
Although the avoirdupois ounce is the mass measure used for most purposes, the 'troy ounce' of exactly 31.1034768 g is used instead for the mass of precious metals such as gold, silver, platinum, palladium, rhodium, etc.
The term 'ounce' is also used in other contexts:
- The ounce-force is a measure of force (see below).
- The fluid ounce is a measure of volume.
Historically, a variety of different ounces measuring mass or volume were used in different jurisdictions by different trades and at different times in history.
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