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Fuzzy images viewed with a microscope may be due to poor resolution. In microscopy, the resolution is defined as the smallest distance between two points on a specimen that can still be defined as two separate objects.
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Which imaging system combines tomography with radionuclide tracers to produce enhanced images of selceted body organs or areas?
The imaging system that combines tomography with radionuclide tracers to produce enhanced images of selected body organs or areas is call PET or positron emission tomography. These types of scans are most commonly used check for brain function, poor blood flow and cancer.
Who uses the microscope?
The first record of the use of lenses to manipulate images was in Greek and Roman writings of around 1000 A.D. As for the origins of someone using lenses to magnify a minute object, it is unclear. Most scientific instruments have a clear place in the historical records when they were formed and who created them, not the microscope though. The definition of the microscope makes it difficult to determine when it was first created. Since there were lenses dating back to ancient societies, how do we say when those lenses were used to look at minute objects? It is practically impossible to say when a single lens was used in that fashion. Credit for the first compound microscope (multiple lenses) is generally given to Zacharias Jansen and John Lippershey of the Netherlands, in 1590. It is likely that the microscope was a result of work made on the telescope. The telescope had much more practical uses in that time, because it could be used for maritime navigation.This idea is supported by the account of one of the first compound microscopes, which was six feet long and had a one inch barrel with a lens at either end. After the compound microscope the next major development was in lenses. Half a century after the compound microscope, both Anthony van Leeuwenhoek and Robert Hooke realized that lenses with very short focal lengths was the key to more magnification. This meant the use of extremely double convex or spherical lenses. They also used lenses made of pure quartz, creating a more pure glass instead of the poor quality, greenish glass of the day. The problem of making lenses in this fashion was that it created chromatic aberration. This aberration is because different wavelengths of light are refracted different amounts, resulting in a smeared image instead of a clear one. In 1758 John Dollard patented an achromatic lens. Even with this new lens, it was not until 1930 when Lister was able to use it to alleviate the problem of chromatic aberration. Much of the interim time was spent on telescope technology. Another form of the microscope, first proposed by Isaac newton in 1692, is the reflecting microscope. In this case the light would not pass through a lens, but would reflect off of a concave mirror. Since all light is reflected the same, there would be no problem with chromatic aberration. The first reflecting microscope was made by Barker in 1736. This model was developed directly from reflecting telescope designs. Reflecting microscopes are used today, but the transmission type are much more prevalent.
Why do we have poor peripheral vision in daylight?
why do we have poor peripheral vision in day light
What was Robert hooke poor?
No Robert Hooke wasnt Poor he was a famous scientist
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have poor vision to the front
Why do car speakers become fuzzy?
Car speakers can become fuzzy for several reasons, including the speaker being blow. Poor radio reception can also cause them to become fuzzy.
Why did Italy refuse to support its Germany?
It viewed the Schlieffen Plan as a poor strategy.
Is an armadillo blind?
Yes, I found a baby armadillo and have had it for 3 months - it is litter trained and loves baths and loves to play. it can see very well.
What are the advantages and disadvantages of compound microscope?
advantage: cheap, multiple lenses, can look at live specimens. disadvantage: poor resolution, poor magnification
What level of income is viewed as poverty for a family of nine?
it means having no money basically poor
How were theaters viewed in shakesspeares day?
rich people sat on the top level thing and the poor in the yard
Matlab coding for morphological background detection and enhancement of images with poor lighting?
Yes, I am intresting in this research.
What image file format usually stores images in the smallest storage space?
GIFs are small but poor quality.
Is Rite Aid a store for poor people?
Rite Aid (R) is actually a chain of pharmacies, or drugstores; owing to its offerings of inexpensive merchandise, it can be viewed as "a store for poor people." But so viewing it is not strictly correct.
What has the author A L Dexter written?
A. L. Dexter has written: 'Monitoring and control of information-poor systems' -- subject(s): Statistical methods, Control theory, Engineering, Uncertainty, Mathematical models, Fuzzy systems 'Monitoring and control of information-poor systems' -- subject(s): Statistical methods, Control theory, Engineering, Uncertainty, Mathematical models, Fuzzy systems 'Microcomputer bus structures and bus interface design' -- subject(s): Buses, Microcomputers
Can armadillos see?
Yes, armadillos can see light but have very poor vision and rely on their strong senses of smell and hearing to find food. Their sight world is a fuzzy black and white one.
Why are web pages loading with only hyperlinks Images fragmented and Videos don't buffer?
Web pages load with only hyperlinks, fragmented images, and non-buffering videos when the Internet connection is poor, low, and weak.
