Sentences with phrase «chemetrics photometers»

A monitor fitted with a photometer sits on the skin surface directly above the implant, measuring the light intensity, which in turn reflects the glucose concentration.

One finalist, the Spectro - Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx), will map galaxies across a large volume of the universe to find out what drove inflation, a pulse of impossibly fast expansion just after the big bang.

Widder and Case then built what they called a high - intake defined - excitation bathy - photometer — or Hidex - BP, for short.

People would come and discuss how to build a really precise photometer.

«The photometers that lamp manufacturers use for calibrating their devices have been produced and calibrated for incandescent lamps, which results in errors when measuring the efficacy of LEDs.

Kepler [NASA's Kepler photometer mission] is going to be launched early next year.

Using an instrument called a photometer, which measures brightness very accurately, researchers can detect those dips and — from their duration and frequency — can deduce the size of the exoplanet and its orbit.

The particle soot absorption photometer collects aerosol particles on a substrate and measures the change in light transmission relative to a reference filter.

Kepler uses a very wide field telescope and a photometer (light meter) to measure brightness variations in more than 156,000 stars simultaneously [source: Ames Research Center, NASA Finds Earth - size Planet Candidates].

The SRRL is the home of the world's largest collection of radiometers in continuous operation including pyranometers, pyrheliometers, pyrgeometers, photometers, and spectroradiometers that can provide the solar resource information necessary for characterizing the performance of solar hydrogen components.

A photometer and guidance system will capture information on the presence on clouds in the atmospheres of the exoplanets and will allow the spacecraft to point to the target star with high stability and precision.

These basic detector properties are essentially unchanged from ground - based tests, indicating that the photometer is working as expected.

To this end, the spacecraft and photometer underwent 67 days of commissioning, which included several data sets taken to characterize the photometer performance.

Ten of these reports were from observers using electronic equipment - video cameras and photoelectric photometers.

Each pixel on the Kepler photometer spans four times 4 arcs on the sky and each star is observed with an optimal aperture that consists of several pixels65.

The brightness depends on the luminosity of the object and on the distance that separates the object from the photometer, as well as the amount of matter between the two that can obscure the object.

Many improvements have been made to photographic photometers during the 20th century.

Herschel invented a photometer («astrometer» as he called it) that allowed the observer to visually compare the brightness of stars using a scale based on the reduced telescopic image of the Moon.

A photometer is an instrument that measures and quantifies the brightness of a celestial body (a galaxy, star, comet or planet, for example).

A photometer has several applications in astronomy.

In 1839, the French astronomer Dominique François Jean Arago proposed the design of a new photometer using photographic principles.

In the case of a star, for example, a photometer can be used to determine its temperature, its distance and even its age.

It was the first true photometer.

In each of the three bands, we have not detected a signature of the central excess component in contrast to the previous report on the det... ▽ More We have undertaken a search for the infrared emission from the intracluster dust in the Coma cluster of galaxies by the Multiband Imaging Photometer for Spitzer.

In 1844, the French physicists Jean Bernard Léon Foucault and Armand Hippolyte Louis Fizeau conducted a series of experiments for Arago in which a photometer was coupled with a daguerreotype.

Abstract: We report on mid - and far - IR Spitzer observations of 7 nearby dusty elliptical galaxies by using the Multiband Imaging Photometer (MIPS) and Infrared Spectrograph (IRS).

In order to study the origin and the propertie... ▽ More We report on mid - and far - IR Spitzer observations of 7 nearby dusty elliptical galaxies by using the Multiband Imaging Photometer (MIPS) and Infrared Spectrograph (IRS).

Astronomers (professional or amateur) can measure a star's brightness (the amount of light it puts out) by using a photometer or charge - coupled device (CCD) on the end of a telescope.

The Single Particle Soot Photometer (SP2) measures the soot (black carbon) mass of individual aerosol particles by laser - induced incandescence down to concentrations as low as ng / m ^ 3.

Arctic Black Carbon Loading and Profile Using the Single - Particle Soot Photometer (SP2) Field Campaign Report.

FIREX - Related Biomass Burning Research Using ARM Single - Particle Soot Photometer Field Campaign Report.

Measurements from ground - based sun photometer networks can be used both to provide a ground - truth validation of satellite aerosol retrieval sand to produce a land - based aerosol climatology which is complementary to satellite retrievals that currently are being performed mostly over ocean.

AAOD is derived by AERONET, a ground - based network of instruments called sun photometers that are used to calculate how much aerosols block the sun's energy as it passes through the atmosphere, and also from an Aura satellite instrument known as OMI.

«Evaluation of ground - based black carbon measurements by filter - based photometers at two Arctic sites.»

But by comparing the satellite photometry to ground - based observations, it was possible to «calibrate» the satellite photometers, finally yielding very high - quality results (I was part of that effort).

Single - Particle Soot Photometer (SP2) Instrument Handbook.

When you measure the incident solar energy upon the surface with a thermo - photometer, are you measuring the amount of energy exchanged during one year?

I told you I had measured the incident solar radiation on the surface with thermo - photometers.

you state you have measured the incident solar radiation with thermo - photometers.

* Operate and maintain calorimeters, computer - controlled analyzers, flame photometers, spectrophotometers, and other equipment used in qualitative or quantitative analysis.

• Well versed in using and maintaining medical technology tools such as chemistry analyzers, laboratory dilutors and photometers.