lib

lib:phScience

Project Haystack scientific definitions

meta

terms

air

The mixture of gases which surrounds the earth

air-temp

Dry bulb temperature

airQuality

Measurement of contaminants in the air

angle

Measurement of the relative difference in direction between two vectors or phasors

apparent

Perceived quantity

atmospheric

Related to the atmosphere of the earth

atmospheric-pressure

Barometric pressure exerted by the weight of the atmosphere

avg

Average

cloudage

Percentage of sky obscurred by clouds

co

Carbon monoxide level

co2

Carbon dioxide level

current

Movement of fluid or electricity

daytime

Time between sunrise and sunset

dewPoint

Dew point temperature at which water vapor will form dew

direction

Compass direction measured in degrees

elec

Associated with electricity, electric charge

elec-current

Electrical current

elec-energy

Electrical energy consumed

elec-power

Electrical energy consumed per unit time

elec-volt

Electrical voltage, potential difference

energy

Measure of ability to do work

feelsLike

Apparent temperature perceived when considering humidity, wind chill, and heat index

flow

Measure of volumetric flow of fluid

fluid

Liquid or gas

flux

Measurement through a given surface

freq

Occurrences per unit time

gas

Substance with neither definite volume nor shape

humidity

Percent relative humidity

ice

Water in its solid form

illuminance

Luminous flux hitting the inside of the sphere at a specific point

intensity

Measure of an electromagnetic field

irradiance

Energy received at a surface by area

level

Range from 0% to 100%

light

Electromagnetic radiation in the visibile spectrum

light-level

Sensed or controlled dimming level of electrical lighting

liquid

Substance with definite volume but takes the shape of its container

luminance

Energy of light in a given direction

luminous

Relating to light as perceived by the eye

luminous-flux

Total perceived light in all directions

luminous-intensity

Perceived light in a particular direction per unit solid angle

magnitude

Size or extent

phenomenon

Aspect of scientific interest with measurable quantities

pm10

Particulate Matter 10

pm25

Particulate Matter 2.5

power

Energy consumed per unit time

precipitation

Amount of atmospheric water vapor fallen including rain, sleet, snow, and hail

prefUnit

Defines a preferred unit to be used with a quantity

pressure

Measure of force applied

quality

Quantity measured against standard metric

quantities

Quantities used to measure this phenomenon

quantity

Measurable property of a substance or phenomenon

quantityOf

Associates quantity as measurement of a phenomenon

solar

Relating to energy from the sun

solar-irradiance

Energy received on surface of the earth from the sun

solid

Substance with definite shape and volume

speed

Distance per unit time

steam

Water in its gas form

substance

Matter in one the three states solid, liquid, or gas

temp

Temperature - measure of hot and cold

total

Complete or absolute

tvoc

Total volatile organic compound (TVOC)

visibility

Distance at which light can be clearly discerned

volt

Electrical voltage, potential difference

volume

Three dimensional space occupied by a substance

water

Water in its liquid form

weather

Associated with atmospheric air or phenomenon

weatherCond

Enumeration of weather conditions

wetBulb

Wet bulb air temperature

wind

Flow of air on surface of the Earth

wind-direction

Compass direction from which wind originates

wind-speed

Wind flow speed