There are 81 names in this directory beginning with the letter N.
In contrast to a roti or chapati, naan bread is a yeast-leavened bread. A kulcha in Indian cuisine is a bread-like accompaniment, made of processed flour (maida) leavened with yeast.
The tendency to believe that we see the world around us objectively, and that people who disagree with us must be uninformed, irrational, or biased.
NATO Phonetic Alphabet
The International Radiotelephony Spelling Alphabet or the more commonly known NATO Phonetic Alphabet is the most widely used radiotelephonic spelling alphabet. It assigns specific code words to each alphabet and numeral so that words, phrases and sentences can be pronounced and understood as intended without scope of misunderstanding or misinterpretation.
A Natural Disaster can be labelled an Act of God, like floods, earthquakes, landslides, avalanches, mudslides, tsunamis, etc, though many such Acts of God do seem to be a result of human intervention.
A Nautical Almanac comprises a series of charts describing the position of celestial bodies to help navigators know their exact geographical position at sea. The charts are detailed for each hour of every year, the positions of celestial bodies.
Graphic representation of a maritime area and adjacent coastal regions. Depending on scale it may show depths of water and topographic map of land, natural seabed features, coastline details, navigational hazards, locations of natural and aids to navigation, information on tides and currents, harbours, buildings and bridges. They are essential tools for marine navigation.
Each degree of latitude is divided into 60 minutes (distance, not time). The distance between two minutes is one nautical mile (1,852m or 6,076ft).
An acronym for Navigation with Indian Constellation, it is India’s Regional Navigation Satellite System offering terrestrial and marine navigation, disaster management, vehicle tracking and fleet management, navigation aid for hikers, visual and voice navigation for drivers, etc. The system comprises nine satellites - seven in orbit and two on the ground as stand-by.
Navigation is the science of determining geographical position from where one is to another known location, including distance travelled, route taken, etc.
An international, automated system for instantly distributing maritime safety information to ships. The frequency of transmission is 518 kHz in English, while 490 kHz is sometime used to broadcast in a local language.
National Disaster Response Force. The nodal agency responsible for disaster relief and evacuation in India.
During the Moon’s first and third quarter phases, the Sun and Moon are at 90° to each other as seen from the Earth. At this time the high water mark is at its lowest and the low water mark is at its highest, and the tidal range is at its minimum.
Near Earth Asteroids
Also called NEAs are asteroids that orbit close to Earth or cross the orbit itself. The latter are called Earth Crossers and are estimated at about 1,000 with diameters of more than a kilometre.
A small fixed-blade knife suspended from around one’s neck carried by means of a cord, either handle up - mountain man style - or handle down. They are usually single-edged, with blade lengths typically around three inches.
It means “No” in radio communications and can be abbreviated to NEGAT. In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. This contrasts with amplitude modulation, in which the amplitude of the carrier wave varies, while the frequency remains constant.
Kind of synthetic rubber that maintains stability over a wide temperature range. Used in wading suits and wet suits for insulation from the cold waters for fishermen, white water adventurers and divers.
A cup in which a drinking water bottle ‘nests’ in. This reduces the need of carrying two items since both form one piece of equipment. Nesting cups can be used for boiling water and cooking food.
The Moon has no light of its own, we see reflected sunlight. On its 29-day orbit of the Earth, the shape of the reflected light varies. When it is new Moon it is on the same side of the Earth from the Sun.
Nickel-Cadmium (NiCd / NiCad) Battery
A type of rechargeable battery. They are made in a wide range of sizes and capacities. Sealed Ni-Cd cells were widely used in portable power tools, cameras, torches, emergency lights, etc. They have since lost market share to Nickel-metal hydride batteries.
Nickel-Metal Hydride (NiMH) Battery
A type of rechargeable battery similar to Nickel-Cadmium but with two to three times the capacity.
The ability of the human eye to adjust to seeing in darkness. In the darkness, peripheral vision is better than direct vision. Depending on how dark it is, it takes about 30 minutes for the eyes to adjust and activate night vision capabilities.
Night Vision Device (NVD)
A device allows typically monochrome images to be produced in light close to total darkness. The image may be a conversion to visible light of both visible light and near-infrared. An NVD may have an infrared illuminator, making it an active as opposed to passive night vision device.
Plant nutrient and fertiliser that enters water supply sources from fertilizers, animal feed lots, manures, sewage, septic systems, industrial wastewaters, sanitary landfills and garbage dumps.
A reversible alteration in consciousness, similar to alcohol intoxication in divers who breathe high-pressure gas at depth impairing judgment, make diving dangerous. Narcosis starts to affect some at 66 feet and the effect increases with depth. Almost all divers notice the effects by 132 feet with a feeling of euphoria, anxiety, loss of coordination and lack of concentration. At extreme depths, hallucinogenic reaction and tunnel vision can occur. Symptoms typically disappear during the ascent.
National Oceanic and Atmospheric Administration, a US agency focused on the conditions of oceans and the atmosphere. It provides weather warnings, charts seas, protects ocean and coastal resources, and conducts research on the environment.
Historic time signal in Cape Town, South Africa since 1806. The gun situated on Signal Hill, fires a round exactly at 12 noon every day except Sundays and public holidays to allow ships in port to check the accuracy of their chronometers.
A mental state when facing a disaster. It causes people to underestimate the possibility of a disaster and its possible effects.
It is the point in the Northern Hemisphere where the Earth’s axis of rotation meets the surface. It is the northernmost point and lies at latitude 90°N. All longitudes converge here and all directions point South.
Also called aurora, aurora borealis, polar light, it is naturally occurring light display in the sky due to disturbance caused by solar winds to the magnetosphere.
Rupturing of a capillary of the nose. Dry air, nose picking, hot temperatures, hypertension, trauma, etc can cause a nose to bleed. Most nose bleeds are safe unless it is due to a head or neck injury. Most nose bleeds will stop if one leans forward and allows the blood to flow out while pinching the fleshy part of the nose.
Noseeum netting has 625 holes per inch compared to mosquito netting that has 200 holes per inch.
Defined by the International Atomic Energy Agency as “an event that has led to significant consequences to people, the environment or the facility.” A nuclear disaster can be precipitated by bomb attacks.
Numerical Weather Prediction
Uses mathematical models of the atmosphere and oceans to predict the weather based on current weather conditions relayed from radiosondes, weather satellites and other systems.
Elements in food needed to survive and grow. Macronutrients provide energy while micronutrients build and repair tissues and regulate body processes. Nutrients comprise fats, carbohydrates, vitamins and proteins and can be either essential or non essential.
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