what is the use of a refractometer
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refractometer Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. refractometer. 1. an instrument for measuring the refractive power of the eye. 2. an instrument for determining the indexes of refraction of various substances, particularly for determining the strength of lenses for spectacles.
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refracting telescope One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the ...
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Instruments A windmill anemometer is a common instrument used at weather stations to obtain the wind speed. A wind vane is used as part of the anemometer to determine the wind's direction. As the wind flows over the windmill, the speed and direction of the wind can be measured with this instrument.
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- This procedure is most effective for stones in the kidney or upper ureter. Lithrotripsy uses an instrument, machine, or probe to break the stone into tiny particles that can pass naturally.
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Surgery For Presbyopia In a monovision technique called NearVision CK (Refractec), conductive keratoplasty is performed on one eye only  usually the non-dominant eye  to correct presbyopia in a person who can see well in the distance without glasses or contact lenses, but who needs help with near vision.
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pupillometer These instruments are based either on using the pupil centres (e.g. Reichert PD gauge) or the corneal reflections (e.g. Essilor Corneal Reflection Pupillometer; Seiko SP-100 Pupillometer), but the latter can be used on the basis of the pupil centres as well.
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What is a burette and how is it used? A burette, or buret, is a uniform-bore glass tube with fine gradations and a stopcock at the bottom, used especially in laboratory procedures for accurate fluid dispensing and measurement. The buret is commonly used in titrations to measure precisely how much liquid is used. (see related links)
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Cystoscopy and Ureteroscopy Cystoscopy and ureteroscopy are procedures used to view the inside of the bladder, urethra, and possibly the ureters. A cystoscope is an instrument used to examine the urethra and bladder. A ureteroscope is an instrument used to examine the ureters. Before a cystoscopy or ureteroscopy, patients should
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What Is Refractory Brick? Refractory brick, also known as fire brick, is a type of specialized brick which is designed for use in high heat environments such as kilns and furnaces.
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Mass Spectrometer Applications of Mass Spectrometers. Mass spectrometers are sensitive detectors of isotopes based on their masses. They are used in carbon dating and other radioactive dating processes. The combination of a mass spectrometer and a gas chromatograph makes a powerful tool for the detection of trace quantities of contaminants or toxins.
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What is a spectrometer? What is a spectrometer? A spectrometer is an tool commonly used by astronomers which splits the light collected by a telescope into its colors. This allows astronomers see the details in the light from space. Astronomers know how to get a lot of special information about a space object by studying its light.
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refracting telescope an optical instrument for making distant objects appear larger and brighter by use of a combination of lenses (refracting telescope) or lenses and curved mirrors (reflecting telescope) See also terrestrial telescope, astronomical telescope, Cassegrain telescope, Galilean telescope, Newtonian telescope
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Spirometry Spirometry is a simple test used to help diagnose and monitor certain lung conditions by measuring how much air you can breathe out in one forced breath.It's carried out using a device called a spirometer, which is a small machine attached by a cable to a mouthpiece.pirometry can be used to help diagnose a lung condition if you have symptoms of a problem, or your doctor feels you're at an increased risk of developing a particular lung condition.
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- The Potentiometer can determine both position and direction of rotation. This measurement can help to understand the position of robot arms or other mechanisms using programming software. Potentiometers are typically used for “limited rotation” applications, such as an arm or lever. Measure Angular Position.
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SYNCROMETER BASICS The SYNCROMETER is a diagnostic device. It is not used for therapy. It finds things in and out of the body. It is an audio oscillator circuit that detects resonance in much the same way a radio does. In your radio a distant frequency produced in a studio is matched to a frequency you produce in your set.
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Refracting Telescopes The rays will then appear to originate from a point in front of the lens. This point is also called the focal point, and its distance is measured in negative units. Refracting Telescopes The earliest telescopes, as well as many amateur telescopes today, use lenses to gather more light than the human eye could collect on its own. They focus the light and make distant objects appear brighter, clearer and magnified. This type of telescope is called a refracting telescope.
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- A spectrophotometer can be set to measure either the percent transmittance or the absorbance of a solution. In lab, you will be using a spectrophotometer called the Spectronic 20 or Spec 20 to measure absorbance. spectrophotometer can be set to measure either the percent transmittance or the absorbance of a solution. In lab, you will be using a spectrophotometer called the Spectronic 20 or Spec 20 to measure absorbance.
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Understanding Telescopes Refractors (also known as dioptrics) are what the public image is of a telescope, a long, thin tube where light passes in a straight line from the front objective lens directly to the eyepiece at the opposite end of the tube.
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Accelerometers: What They Are & How They Work Accelerometers are likewise used in cars as the industry method way of detecting car crashes and deploying airbags almost instantaneously. In another example, a dynamic accelerometer measures gravitational pull to determine the angle at which a device is tilted with respect to the Earth. By sensing the amount of acceleration, users analyze how the device is moving. Accelerometers allow the user to understand the surroundings of an item better.
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- The main difference between reflectors and refractors is that refractors help you see far away things by bending the light to magnify them. Reflectors also magnify, but they also help you see far away things by collecting more light, so you can see them better. For a beginner, a refractor is better.
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Eye Refraction View All. If you wear glasses, you've probably had your eyes refracted. Refraction is a process your eye care professional uses to measure your refractive error, or vision problem. It refers to a series of eye tests that an eye care professional uses to measure your best prescription for eyeglasses or contact lenses. What Is a Refractive Error?
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Brix Refractometer A brix refractometer is the instrument used to measure refractive index of an item's sucrose (Brix) level.Request Information. Although brix refractometers are best known for measuring liquids, they are also used to measure gases and solids.A Brix Refractometer is frequently used by grape growers, Kiwifruit growers, home brewers as well as food producers for Brix testing of sucrose levels in their fruit. brix refractometer is the instrument used to measure refractive index of an item's sucrose (Brix) level.
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Volumetric Flask: Uses & Calibration In order to do these investigations, scientists use several tools for experimentation. Basic research equipment includes tools that can be used for measuring lengths, mass, and volume. One of the most basic pieces of equipment used in the measuring of volume is the volumetric flask. Let's discuss the volumetric flask and its use in scientific experiments.
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- A spectrometer is a common tool used by various scientists to determine information about an object or substances through the analysis of its light properties.
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How does a phoropter work (mechanically)? , Optonetrist of >20 years nd PhD student in Biomedicine. A phoropter an instrument to refract or determine the refractive error of eyes. It holds a series of optically aligned prisms and lenses that can be turned in synchronous motion to create the right combination of lenses.
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Instruments A wind vane is used as part of the anemometer to determine the wind's direction. As the wind flows over the windmill, the speed and direction of the wind can be measured with this instrument. Some scientific anemometers use the speed of sound to measure the wind speed more precisely in three dimensions.