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For light microscopy, a steel knife mounted in a microtome is used to cut 10-micrometer-thick tissue sections which are mounted on a glass microscope slide.
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For and light
For the young child this may be no more than providing food, light or movement.
For those who put their trust in Him He still says every day again: `` Let there be light ''!!
For if I knew the secret of letting this power in my body change directly into electricity, I could rent myself out to the electric companies and with just the power in my body I could light all the lights and run all the factories in the entire United States for some days.
For instance, a local society in the middle of a large city may have regular meetings with speakers, focusing less on observing the night sky if the membership is less able to observe due to factors such as light pollution.
For example, changes in signal strength may be used to specify the sounds to be reproduced by a loudspeaker, or the light intensity of television pixels.
For instance, 202 obsolete Panzer I light tanks were modified by removing the turret and were rebuilt as the Panzerjäger I self-propelled Skoda anti-tank gun.
For example, PAC expression in certain neurons has been shown to alter the grooming behavior in fruit flies exposed to blue light.
For the simple case where the direction of the light beam along the line SE is perpendicular to the motion of the observer then only light emitted at an angle equal to the arc cosine of the ratio of the observer's speed to the speed of light will reach the telescope.
For its time, the game was considered " light years " ahead of the Original Dungeons & Dragons.
For Satan himself transforms himself into an angel of light.
* For some reactions, the presence of electromagnetic radiation, most notably ultraviolet light, is needed to promote the breaking of bonds to start the reaction.
For example, the Diels-Alder reactions can be assisted by heat whereas the cycloaddition is selectively induced by light.
For example, the thermite reaction is used to generate light and heat in pyrotechnics and welding.
For identification by light microscopy, a scraping or swab of the affected area is placed on a microscope slide.
For example, diodes are used to regulate voltage ( Zener diodes ), to protect circuits from high voltage surges ( avalanche diodes ), to electronically tune radio and TV receivers ( varactor diodes ), to generate radio frequency oscillations ( tunnel diodes, Gunn diodes, IMPATT diodes ), and to produce light ( light emitting diodes ).
For light, we can often neglect one direction if the diffracting object extends in that direction over a distance far greater than the wavelength.
For waves which do not require a medium, such as light or gravity in general relativity, only the relative difference in velocity between the observer and the source needs to be considered.
For example, if a triangle is constructed out of three rays of light, then in general the interior angles do not add up to 180 degrees due to gravity.
For lower frequencies of EMR up to those of visible light ( i. e., radio, microwave, infrared ), the damage done to cells and also to many ordinary materials under such conditions is determined mainly by heating effects, and thus by the radiation power.
For instance, dark bands in the light emitted by a distant star are due to the atoms in the star's atmosphere.
For low-frequency radiation ( radio waves to visible light ) the best-understood effects are those due to radiation power alone, acting through the effect of simple heating when the radiation is absorbed by the cell.
For example, the sentence " The coat is red " has no observer, the sentence " We see the coat as red " ( where " we " indicates observers ) appears more specific in context as regards light waves and colour as determined by modern science, that is, colour results from a reaction in the human brain.
For and microscopy
For field ion microscopy a gas is introduced, known as the imaging gas, into the chamber at very low pressures.
For electron microscopy, the most commonly used fixative is glutaraldehyde, usually as a 2. 5 % solution in phosphate buffered saline.
For light microscopy, paraffin wax is most frequently used.
For transmission electron microscopy, a diamond knife mounted in an ultramicrotome is used to cut 50-nanometer-thick tissue sections which are mounted on a 3-millimeter-diameter copper grid.
For instance, laser microscopy focused on biological applications uses ultrashort pulse lasers, or femtosecond lasers, in a number of techniques labeled as nonlinear microscopy, saturation microscopy, and multiphoton fluorescence microscopy.
For interior imaging, the quality of the image is greatly enhanced over simple microscopy because image information from multiple depths in the specimen is not superimposed.
For illumination techniques like dark field, phase contrast and differential interference contrast microscopy additional optical components must be precisely aligned in the light path.
For specialist purposes glass knives are still made and used today, particularly for cutting thin sections for electron microscopy in a technique known as microtomy.
For a different type of microscopy that also leverages light scattering against a dark background see dark field microscopy.
For example, the first application of serial block-face scanning electron microscopy was on rodent cortical tissue.
For a given numerical aperture ( NA ), the resolution of microscopy for flat objects under coherent illumination can be improved using interferometric microscopy.
For fluorescence microscopy a smear of washed sperm cells are made, airdried, permealized and then stained.
For a while microscopy suffered in its reputation, but by 1840 histology was a recognised discipline, and in time the view of Hodgkin and Lister that " globules " were optical artefacts became accepted.
For more than thirty years he edited and published The Microscope, an international quarterly journal of microscopy.
For example, rhombomeres are detectable by light microscopy in Swiss / Webster strain of mice for up to embryonic day ( E ) 10. 5, but they disappear at E11. 5.
For example observing a tissue sample prepared with a fluorescent DNA stain by fluorescent microscopy only reveals the organisation of the DNA within the cells and reveals nothing else about the cell morphologies.
For more detailed analysis of much smaller areas in a thin section, FTIR microscopy can be used for sample inspection.
For example, by creating a fusion gene of a protein of interest and green fluorescent protein, the protein of interest may be observed in cells or tissue using fluorescence microscopy.
For and steel
For mounting to corrugated plastic backgrounds, very small holes may be drilled in the sides of the letters and stainless steel wire threaded through the openings, its ends twisted behind the panels.
For example, steel is stronger than iron, its primary element.
For this reason it is usually reinforced with materials that are strong in tension ( often steel ).
For example, the Jin Mao Tower in China uses tubular steel piles about 1m ( 3. 3 feet ) driven to a depth of 83. 5m ( 274 feet ) to support its weight.
For local detail surveys, tacheometers are commonly employed although the old-fashioned rectangular technique using angle prism and steel tape is still an inexpensive alternative.
For these applications, more expensive stainless steel is preferred.
For high energy gamma, this relies on interaction of the photon radiation with the tube wall material, usually 1-2mm of chrome steel to produce electrons which can enter and ionise the fill gas.
For example, a harder, more brittle steel may be sandwiched between an outer layer of softer, tougher, stainless steel to reduce vulnerability to corrosion.
For the steels, the hardness and tensile strength of the steel is related to the amount of carbon present, with increasing carbon levels also leading to lower ductility and toughness.
For example, the target for the annual output of steel has been reduced by a third, from 15 million tons to 10 million tons.
For example, steel is very elastic and has a high speed of sound.
For instance, Patton required all personnel to wear steel helmets ( even physicians in the operating wards ) and required his troops to wear the unpopular lace-up canvas leggings and neckties since the leggings prevented injury from scorpions, spiders, and rats which would climb up under soldiers ' trousers.
For instance, in 1902, steel cables supporting the Brooklyn Bridge were first covered in linseed oil then wrapped in duck tape before being laid in place.
For example, plumbers use video cameras for inspections of hidden leaks or problems, they use hydro jets, and high pressure hydraulic pumps connected to steel cables for trench-less sewer line replacement.
For example, if the recipe time is calculated using a stainless steel container and a plastic container is used instead, the food at the bottom of the container may be under-cooked.
For some decorative purposes, multi-nibbed pens — steel brushes — can be used.
For example, the steel industry is assumed to be selling in a competitive market – before pollution-control laws were imposed and enforced ( e. g. under laissez-faire ).
For example, with a steel factory that trespasses on the lungs of a large number of individuals with pollution, it is difficult if not impossible for any one person to negotiate with the producer, and there are large transaction costs.
For 1974, the previous flat steel bumper mounting brackets were replaced with tubular " self restoring energy absorbing " attachments, effectively shock absorbers for the bumpers, on North American market Beetles.
For example, when a firm is producing steel, it absorbs labor, capital and other inputs, it must pay for these in the appropriate markets, and these costs will be reflected in the market price for steel.
For many years, one of Ormond-By-The-Sea's most distinguishing landmarks was the Ormond Pier, a steel structure constructed in 1959 near the intersection of Laurie Drive and AIA.
For example, sintered stainless steel elements are used for filtering steam in food and pharmaceutical applications.
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