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What are sections thin slices of specimens used for in science laboratories?
Biological thin specimens may be flash frozen using dry ice or liquid nitrogen and the sample is then embedded in paraffin wax or some similar material. From this block, thin sections are shaved off; often tens of samples; and these then may be transferred to a suitable mount for microscopic inspection.The shaving is usually done with the sharp edge of a specially prepared glass blade, and the the whole assembly is known as a microtome.This technique is used for plant or other bio tissue samples. For example, one could thus make a serial sections of a worm, allowing one to follow the location and shape of various organs in the body. Such as hearts or nephridia.Geological thin specimens are also prepared for microscope inspection. The rock sample is mounted on a suitable carrier, and a smooth face is prepared using fine grinding techniques. The smooth face is then adhered to the smooth face of a carrier, and the remainder of the rock is then ground away until only a thin section remains. Using a transparent carrier allows the progress of the grinding to be monitored.This is inspected under polarized light, and is an informative way of determining the minerals present.
Is a aluminum foil a compound mixture or element?
an element. its made entirely out of aluminum
Is lead pipe a compound or element?
It would be an alloy with some compounds (lead oxides) in a thin layer on its surface.
A compound has a very high Rf value in a polar solvent what can you say about its molecular structure?
Rf Value - It tells you the affinity that the compound has to the solvent...High Rf = little or no polar groups and low Rf = more polar groups. Question: In TLC (thin-layer chromatography) when the compound has a high Rf the solvent is: a. less polar b. Is more polar Answer: a. less polar
Why can liquids be thick or thin?
Water is thin. Is soap thin? NOSo why can liquids be thick or thin? Because the Quantum Elements of them are made with different stuff.-Christine, 12
A thin stained slice of tissue mounted on a microscope is called?
stains
What are the Kinds of microscopes and their uses?
There there are many. Simple microscope, compound microscope, light microscope, scanning electron microscope, TEMicroscope, Dissection microscope, etc and most of them are used to see small cells that cannot be seen by the naked eye.
What does the microscope rest on?
In compound microscopes for use for viewing thin sections at high power, specimens are mounted on a microscope slide and covered with a coverslip and are placed on the microscope stage or base plate. In stereomicroscopes the same is done however for large objects such as rocks or minerals no microscope slide is required the object to be observed is placed directly on the stage.
What is the difference between compound microscope and dissecting microscope?
In compound microscope are usually able to magnify an object by 400 times.while dissecting microscope usually only magnify an object by 40 times or less. In compound microscope are used to view very small, relatively thin things, such as cells. In dissecting microscope are used to look at larger objects that have a greater degree of depth such as grains of pollen. In compound microscope is always made with 1 eyepiece. On the other hand dissecting microscope is always made with 2 eyepiece.
What scientist named cells after viewing thin slices of cork through a simple Compound light microscope?
Robert Hook
How are biopsy specimens handled?
Biopsy specimens are often sliced into thin slices, stained, mounted on a glass slide, and examined using a light microscope. Newer sample preparation techniques involve the rapid freezing of the sample and slicing of the still-frozen material.
Is the TEM one of the types of a compound microscope?
No, the TEM is a transmission electron microsope which passes a beam of electron particles through an ultra thin specimen in a vacuum producing high magnification. A compound microscope uses ordinary light passed through a series of convex glass lenses with limited magnification.
What is the slide on a microscope placed on?
A coverslip is a thin glass placed on the microscope slide.
What are thin sections?
are thin slides of rock or mineral mounted to a microscope slide.
Comparision between metallurgical and biological microscope?
A metallurgical microscope is used to view opaque items and measure thin film, electroplating coatings, inclusions, grain size, and surface defects. A biological microscope, on the other hand, is used to view crystals, computer chips, cells, and tissues. It is also known as a high power compound microscope.
What did Robert Hooke observe in the discovery of cells?
Robert Hooke was looking down a microscope at a piece of cork.What he saw were the non-living cell walls that are characteristic of phellum (cork) when mature.
Why are specimens usually very thin slices of material?
so they can see it better
