34 relations: Absorption (electromagnetic radiation), Accretion disk, Advanced microwave sounding unit, Aqua (satellite), Area, Atmospheric physics, Body mass index, Bone density, Chemical substance, Density, Differential optical absorption spectroscopy, Grammage, Hard disk drive, Integral, International System of Units, Kilogram, Linear density, Liquid water path, Mass, Microwave, Nadir, Number density, Optical depth, Optical disc, Ounce, Paper density, Radiometer, Remote sensing, Sightline, Snow science, Tape drive, Total electron content, Total Ozone Mapping Spectrometer, Units of paper quantity.
In physics, absorption of electromagnetic radiation is the way in which the energy of a photon is taken up by matter, typically the electrons of an atom.
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
The advanced microwave sounding unit (AMSU) is a multi-channel microwave radiometer installed on meteorological satellites.
Aqua (EOS PM-1) is a multi-national NASA scientific research satellite in orbit around the Earth, studying the precipitation, evaporation, and cycling of water.
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane.
Atmospheric physics is the application of physics to the study of the atmosphere.
The body mass index (BMI) or Quetelet index is a value derived from the mass (weight) and height of an individual.
Bone density, or bone mineral density (BMD), is the amount of bone mineral in bone tissue.
A chemical substance, also known as a pure substance, is a form of matter that consists of molecules of the same composition and structure.
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
In atmospheric chemistry, differential optical absorption spectroscopy (DOAS) is used to measure concentrations of trace gases.
Grammage and basis weight, in the pulp and paper and the fabric industries, are the areal density of a paper or fabric product, that is, its mass per unit of area.
A hard disk drive (HDD), hard disk, hard drive or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.
In mathematics, an integral assigns numbers to functions in a way that can describe displacement, area, volume, and other concepts that arise by combining infinitesimal data.
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
The kilogram or kilogramme (symbol: kg) is the base unit of mass in the International System of Units (SI), and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "Le Grand K" or "Big K"), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France.
Linear density is the measure of a quantity of any characteristic value per unit of length.
Liquid water path - in units of is a measure of the total amount of liquid water present between two points in the atmosphere.
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.
The nadir (from نظير / ALA-LC: naẓīr, meaning "counterpart") is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there.
In physics, astronomy, chemistry, biology and geography, number density (symbol: n or ρN) is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: three-dimensional volumetric number density, two-dimensional areal number density, or one-dimensional line number density.
In physics, optical depth or optical thickness, is the natural logarithm of the ratio of incident to transmitted radiant power through a material, and spectral optical depth or spectral optical thickness is the natural logarithm of the ratio of incident to transmitted spectral radiant power through a material.
In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc which encodes binary data (bits) in the form of pits (binary value of 0 or off, due to lack of reflection when read) and lands (binary value of 1 or on, due to a reflection when read) on a special material (often aluminium) on one of its flat surfaces.
The ounce (abbreviated oz; apothecary symbol: ℥) is a unit of mass, weight, or volume used in most British derived customary systems of measurement.
Paper density is its mass per unit volume.
A radiometer or roentgenometer is a device for measuring the radiant flux (power) of electromagnetic radiation.
Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation.
A sightline (also sight line) or visual axis is a normally unobstructed line of sight between an intended observer (or spectator) and a subject of interest, such as a stage, arena, or monument.
Snow science addresses how snow forms, its distribution, and processes affecting how snowpacks change over time.
A tape drive is a data storage device that reads and writes data on a magnetic tape.
Total electron content (or TEC) is an important descriptive quantity for the ionosphere of the Earth.
The Total Ozone Mapping Spectrometer (TOMS) is a NASA satellite instrument for measuring ozone values.
Various measures of paper quantity have been and are in use.