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Technology
The application of science, especially to industrial or commercial objectives
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The Very Large Array
The VLA is a radio astronomy observatory located on the Plains of San Agustin, between the towns of Magdalena and Datil, some 50 miles (80 km) west of Socorro, New Mexico.
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Threatened Species
Threatened species are any species which are vulnerable to endangerment in the near future.
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Torque of a couple
The torque of a couple is the product of one of the forces with the perpendicular separation between the couple.
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Toxic
Describes something that can be poisonous or deadly if it is eaten touched, or inhaled in large enough amounts.
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Toxicity
The quality or degree of being poisonous or harmful to plant or animal life.
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Toxins
A poisonous substance, especially a protein, that is produced by living cells or organisms and is capable of causing disease when introduced into the body tissues but is often also capable of inducing neutralizing antibodies or antitoxins
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True Value
This is the value that would be obtained in an ideal measurement.
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Uncertainty
The interval within which the true value can be expected to lie, with a given level of confidence or probability, eg “the speed is 20 m/s ± 1 m/s , at a level of confidence of 90 %.
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Upthrust
It is the upward force acting on an object that is partially or fully immersed in a fluid.
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Utilities
Companies (usually power distributors) permitted to provide important public services (such as energy or water) to a region.
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Valid conclusion
A conclusion supported by valid data, obtained from an appropriate experimental design and based on sound reasoning.
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Validity
Suitability of the investigative procedure to answer the question being asked. For example, an investigation to find out if the acceleration of an object depended upon the mass of the object would not be a valid procedure if the applied force was not controlled.
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Variables
These are physical, chemical or biological quantities or characteristics.
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Vector
A vector is a quantity which has direction as well as magnitude.
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Vector quantities
Vectors are quantities that are fully described by both a magnitude and a direction
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Velocity
The rate of change of displacement with respect to time.
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venomous
capable of injecting venom by means of a bite or sting
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Virus
A microorganism that is smaller than a bacterium that cannot grow or reproduce apart from a living cell. A virus invades living cells and uses their chemical machinery to keep itself alive and to replicate itself.
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Viruses
Infective agents that typically consist of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.
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Visual Pollution
An aesthetic issue and refers to the impacts of pollution that impair one's ability to enjoy a vista or view. Visual pollution disturbs the visual areas of people by creating negative changes in the natural environment. Examples could include: the presence of overhead power lines, motorway billboards, scarred landforms , open storage of trash, and municipal solid waste .
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Waste
Garbage, trash, rubbish
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Water Pollution
Water pollution is the contamination of water bodies such as lakes, rivers, and oceans.
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Watt
A unit of power . Rate of working of 1 Joule per second.
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Western Diamondback
A venomous rattlesnake species found in the United States and Mexico.
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Wilderness
Land remaining in an undisturbed condition, with few if any traces of human activities.
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Wildlife
Animals living in the wilderness without human intervention
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Wind Power
Power (energy per second) derived from the wind .
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Zero Error
Any indication that a measuring system gives a false reading when the true value of a measured quantity is zero, eg the needle on an ammeter failing to return to zero when no current flows.
A zero error may result in a systematic uncertainty.
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Zygote
A cell that is the result of the combination of two gametes (e.g., a sperm and an egg) and which contains a full set of chromosomes.