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Making a concrete base for shed,portable storage device for iphone,storage shelves ikea hacker,sheds for sale near bristol - Plans Download

Please Select Username to appear on public areas of the site like community and recipe comments. Create a polished concrete table with a solid wood base, with inlays of glass, leaves, tile or other materials.
1-6 inch automatic concrete nail making machine-Nail making machine manufacture base in central China! Wire drawinga€”low temperature annealing a€“nails makinga€”quenchinga€”galvanzationa€”packaging. Like in any building, reinforced steel strips are installed in the concrete footings to provide grounding for power, static and lightning. After you’re done excavating the footer, start compacting 6” of gravel or pour a 1’ of concrete base (for walls higher than 4’) at the lowest spot.
Some stone will need to be cut to create curves and it is recommend to use a dry brick saw that has a diamond tip blade. Below you will find my guide to the process I used to customize one of theA many Don Post Boba Fett helmets I've worked on both for myself and others as well.
Due to the design of the Dremel, it was too difficult to cleanly cut the far corners of the T-Visor area.
Take an electric drill fitted with a very small drill bit and drill holes into the depressions of the key slots. Soak up some paper towels with acetone and scrub the helmet down until all of the exterior paint is wiped away leaving only the nasty green finish of the vinyl plastic. RLM 73 can be a very difficult color to find - and Tower Hobbies was the only place I found to carry it. Tip: If you have a VERY fine point paint brush, you can apply (by hand) the symbols found on the ear pieces. I downloaded the kill stripe template from The Dented Helmet and printed it out on paper that wasn't too flimsy. Mask the rest of your helmet so that paint will not get on it during the upcoming painting process. Trouble Shooting: If you opt to use a paint brush as opposed to an air brush, you will likely encounter paint that drips behind the mask you applied.
Take very fine grit sand paper and gently wipe down the yellow paint residue between your masked areasA so that your surface is once again smooth.
The purpose of scratching is to give the illusion of battle damage by revealing the chrome silver undercoat. I next worked on the headband area around the helmet - following a bit of the MR helmet as well as using personal discretion. I next worked on the sides of the helmet, around and on the Panzer Olive Green ear-piece.a€?a€?Finally, I tackled the back of the helmet which was a nightmare. Here is the Mystery Helmet I did in 2008 that features a much more elaborate damage pattern. I used 3M adhesive spray to affix the material to the visible side of the foam (the part that would be touching your head), and then sprayed the other side so that it would stick to the inside of the helmet. Additionally, I would recommend using a Dremel to cut out your visor for the simple reason that scissors are challenging to cut with and not scratch the underside of the visor (i.e. Unlike the Mystery Helmet which has a rigid body to it, the DP helmets are reasonably flexible, and that can create all sorts of problems if you are trying to hold a lens in place and glue it at the same time without making a mess.
For the lower cheeks, you can use regular masking tape since the chrome color won't peel off when the tape is removed. If you are using PRR Brunswick Green for the first time, you may be freaked out by it's extremely dark color. What's not shown in this picture is that I tucked a few paper towels into the top of the masking tape to protect the dome from overspray.A  The more you paint you apply in previous steps, the more effort you must take to protect it. During my Mystery Helmet project last year (2008) I had three separate shipments of coagulated RLM 73 paint that were completely un-useable. G+ #Read of the Day: The Daguerreotype - The daguerreotype, an early form of photograph, was invented by Louis Daguerre in the early 19th c. The first photograph (1826) - Joseph Niepce, a French inventor and pioneer in photography, is generally credited with producing the first photograph.
Easy Peasy Fact:Following Niepcea€™s experiments, in 1829 Louis Daguerre stepped up to make some improvements on a novel idea. Adafruit: The oldest street scene photos of New York City - Check out these incredible (and incredibly old) photos of NYC, via Ephemeral New York. The oldest street scene photos of New York CityCheck out these incredible (and incredibly old) photos of NYC, via Ephemeral New York. I still remember reading about Louis Daguerre's invention, the daguerreotype, in high school.
The Making of the American Museum of Natural Historya€™s Wildlife DioramasFossil shark-jaw restoration, 1909.
Very old portrait of three men identified as (from left to right) Henry, George, and Stephen Childs, November 25, 1842.
In 1840, Hippolyte Bayard, a pioneer of early photography, created an image called Self-Portrait as a Drowned Man. 10 Times History Was Captured in Living ColorColor photographs go back to before you might think.
Louis Daguerrea€™s view of the Boulevard du Temple in the French capital was captured in 1938, using a method a€“ the daguerreotype a€“ that took around seven minutes to develop a single image.Such a long exposure meant that anything moving around was not picked up. In the middle of the slab, we left a channel where Hauraton drainage elements will be installed. This is the most important step, as you must have a solid base for your wall to last, and not collapse. Build one section of wall at a time, beginning with the first course until you need to step up the wall. A Before each chapter, I noted the tools and supplies needed, and the approximate amount of time you'll need to invest. The curvature of the lens is too extreme and hardly pliable to accommodate a Don Post Helmet without excessive force (e.g. A As a result, I got as far as I could and literally pulled out the remaining tab with a pair of needle-nosed pliers.
A This will remove all of the slick paint Don Post used, and allow your primer and base coats to adhere better.a€?a€?Let dry for about 20 or 30 minutes and then sand it down with a fine sandpaper.
A A I let this sit in the hot summer sun for about four hours, and then stored the helmet inside overnight without any more work done to it.
A The visible textures are due to the molding process of the helmet - not inconsistencies in the paint layers. A I would suggest applying two coats, one hour apart from each othera€?a€?I should also note that some people have difficulty masking the T-visor due to the curvature. A Masking this area can be very tricky due to the curvature both above (where it meets the T-visor) and below (where the lower cheeks are).
A That being said, if you do order it through Tower Hobbies, make sure you speak with a customer service rep and explain that you want the bottles checked for freshness prior to them being shipped. A Here, I would advise painting by hand, letting the area dry, and then lightly dusted the area using an airbrush to remove any brush strokes that might have been showing. Because of the curvature of the pieces, focused spraying will result in pooling or excessive dripping. A It is recommended that you start off with just a dusting and let dry, then follow up with a more thorough coat. A If that's the case, use a sharp pointed steak knife and just scratch out the excess Concrete color to reveal the Panzer Olive underneath.
A If you find that your brush is too soft despite being a fine point, dip your brush into the Flat Black paint and let it dry. A Before the paint was fully dry, I placed a piece of purple painters tape OVER my new paint work, and pulled it off almost immediately. A To erase these, simply mask the top portions of the stripes with a little bit of tape, and dust the area with Panzer Olive Green from a distance of about 14" inches. A For the most part, I identified the major scratches and locations and started with those. If you've seen the movie production helmet, or the MR helmet, it's an un-patterned mess of four colors: Concrete, Light Gray, Lark Dark Gray, and Green RLM 25.
A Some of the target areas have a similar outline to the Master Replicas Fett helmet, but just not as elaborate. A With double-epoxy, small globs of it can be applied with relative ease, and with much less chance of making a mess as compared to using a caulking gun with Liquid Nails.
Two more pieces can be used at each corner of the T-visora€™s eye line too provided you have enough overlap on the inside of the helmet. A He suggests mixing the washer fluid and black paint in a regular sprayer bottle, lightly spraying the helmetA and immediately wiping off with a clean rag. A This will remove all of the slick paint Don Post used, and allow your primer and base coats to adhere better.Let dry for about 20 or 30 minutes and then sand it down with a fine sandpaper.
A I would suggest applying two coats, one hour apart from each otherI should also note that some people have difficulty masking the T-visor due to the curvature. Talbot was active from the mid-1830s, and sits alongside Louis Daguerre as one of the fathers of the medium.
Niepcea€™s photograph shows a view from the Window at Le Gras, and it only took eight hours of exposure time!The history of photography has roots in remote antiquity with the discovery of the principle of the camera obscura and the observation that some substances are visibly altered by exposure to light.
Again employing the use of solvents and metal plates as a canvas, Daguerre utilized a combination of silver and iodine to make a surface more sensitive to light, thereby taking less time to develop. Half of the Limburg province of Belgium is added to the Netherlands, giving rise to a Belgian Limburg and Dutch Limburg (the latter being from September 5 joined to the German Confederation).June 3 a€“ Destruction of opium at Humen begins, casus belli for Britain to open the 3-year First Opium War against Qing dynasty China.
Bayard had just perfected the process of printing on to paper, which would come to define photography in the following century, but the French government had decided to invest instead in the daguerrotype, a process invented by his rival, Louis Daguerre.


The only figure to stay still long enough was a man, on the corner of the street, who had stopped to have his shoes shined.Created using a chemically-treated silver plate, it only shows anyone at all because the man stopped long enough to make history.
It will be connected later to the lightning protection system and the electric installation.
Concrete is poured from the mixer truck into the pump and the pump delivers it on the slab through a long hose. On sunday, we will start drilling the boreholes for the geothermal system on the other part of the land. Keep in mind, if using Unilock pre-cast concrete units, it is not recommended to go higher than 4'. The fabric lets water through, but prevents soil from mixing with gravel, which will be used as backfill. You can use tapered block, half blocks, and corner blocks which allow you not to have to cut, and still get curves and desired look from your wall. A The experience I gained from customizing numerous DP helmets over the years gave me the confidence to finish my Mystery Helmet last year - that of which I am very proud of. A Generally, I prefer to cut them out and add a screen on the inside to improve air-flow to the interior of the helmet, but in the case of this particular helmet, I chose not to. A The purpose of this is to weaken the plastic, and to make cutting with an X-Acto knife much easier.a€?a€?When finished with the drilling, use an X-Acto knife to cut the key slot impressions exactly way they are molded. A Wipe down the helmet with a dry paper towel to remove any sanding dust, and proceed to coat it with primer.a€?a€?If you use Duracoat filler primer, only one coat is needed.
A The painters tape has less adhesive making it less likely that you'll pull the chrome off when removed. A I was not charged for the previous three shipments, and the customer service department was trying to be helpful throughout the ordeal. A Just use light coats each time until you have full coverage on the outer surfaces.a€?a€?With regard to the right ear-piece (range finder side, #1 below), I'd recommend applying the Earth color first and allowing to dry for a few days before masking off for application of the metallic color if you need to do some touch-up work. A Let the second coat dry for several hours before applying a third or fourth coat as necessary. Please note that Don Post helmets have varied in size from one production run to the next - - and the model yearA of a DP helmet will also affect the sizing for these. A I'd recommend using an X-Acto knife which makes this task much easier than a typical razor. A If you feel that your exposed chrome undercoats are a bit too dull, simply use a fine paint brush and apply a fresh layer of chrome silver over the chrome base. A I began with the Reefer Gray, applying it to areas of importance, and then letting it dry before applying the Lark Dark Gray.
A The purpose of this is to weaken the plastic, and to make cutting with an X-Acto knife much easier.When finished with the drilling, use an X-Acto knife to cut the key slot impressions exactly way they are molded. A Wipe down the helmet with a dry paper towel to remove any sanding dust, and proceed to coat it with primer.If you use Duracoat filler primer, only one coat is needed. A Just use light coats each time until you have full coverage on the outer surfaces.With regard to the right ear-piece (range finder side, #1 below), I'd recommend applying the Earth color first and allowing to dry for a few days before masking off for application of the metallic color if you need to do some touch-up work.
As far as is known, nobody thought of bringing these two phenomena together to capture camera images in permanent form until around 1800, when Thomas Wedgwood made the first reliably documented although unsuccessful attempt.
It didna€™t take long for others to seize the new technology and create daguerreotypes of New York City street scenes. Daguerreotypes are sharply defined, highly reflective, one-of-a-kind photographs on silver-coated copper plates, usually packaged behind glass and kept in protective cases. Use a torpedo level to check to make sure each block is level, and a 4' level to make sure the last 2 or 3 blocks are level. After the fabric is in place, lay a 4” drainage tile in the bottom of the pit between the fabric and the wall for drainage. A After completion of my project, I realized that I had aA considerable amount of paint left over, and could possibly customize a few more helmets with what remained. A If you still have a bit of roughness there, fold a piece of rough grit sandpaper tight enough to fit in the corners, and pull it back and forth quickly to smooth out the three areas that make up the corner. A a€?a€?If you make any errors with regard to making them uniform, you can use Bondo glazing putty (since it's easier to sand) to re-mold them, provided you didn't screw up too much. A Regular masking tape needs to be affixed for the areas surrounding your paint-work because it will stay tight to the helmet thus reducing the likelihood of paint running behind it to parts you don't want colored.
A This may take a few more coats of paint than what I've described, and may even take a day or two to verify that you have perfectly uniform coats on the helmet. A Much unlike the Mystery Helmet, the vinyl plastic of a Don Post helmet doesn't absorb paint very well. A I've found Earth to be more challenging in terms of mess and adhesionA than the other paint colors. A Unfortunately for me, I had misplaced my X-Acto knife and had to use the knife pictured below. A Please note that the lighting situation in the two images above were considerably different at the time the photos were taken. A If you make any errors with regard to making them uniform, you can use Bondo glazing putty (since it's easier to sand) to re-mold them, provided you didn't screw up too much. A If you can't check the bottles yourself, askA  someone to do it for you.A  Trust me when I say that it will save you a considerable amount of time.
A daguerreotype, produced on a silver-plated copper sheet, produces a mirror image photograph of the exposed scene. The Government, which has been only too generous to Monsieur Daguerre, has said it can do nothing for Monsieur Bayard, and the poor wretch has drowned himself. Coping can be rock faced, which gives it a rough finish or left smooth which is nice if it will be sat on.
A If it looks filled in and completely smooth, verify this by spraying a light coat of primer over this area.
A a€?a€?After the first coat, let dry for several hours in the sun (if possible), then re-apply.a€?a€?When finished, carefully remove the painters tape so that you don't tear the previously painted areas.
A a€?a€?If you opt to have brush strokes visible, be certain that they are consistent in direction.
A The exact same colors were used on both helmets even though they appear to be quite different above. A So, earlier this year (2009), I decided to take on yet another DP helmet but doing so in similar fashion to the process used forA my Mystery Helmet.
A After the first coat, let dry for several hours in the sun (if possible), then re-apply.When finished, carefully remove the painters tape so that you don't tear the previously painted areas.
Chemistry student Robert Cornelius was so fascinated by the chemical process involved in Daguerrea€™s work that he sought to make some improvements himself. When the drainage tile is completed and properly exiting from behind the wall; begin backfilling with stone such as 57’ limestone.
Additionally, you will need to sand down the back side of the T-Visor (from inside) to have a reasonably consistent depth all around so that the new visor will be flush to the plastic when installed.
A I would recommend waiting a full day (whether you used one coat or two) before moving on to the next step. A The kill stripes also appear thicker on the DP helmet due to it being a smaller sizeA to the Mystery Helmet which is a 1:1 scale.
A Some of the spray may bleed through your cover material once you apply it to the foam padding,A and you don't want the adhesive to touch your skin.
It was commercially introduced in 1839, a date generally accepted as the birth year of practical photography.The metal-based daguerreotype process soon had some competition from the paper-based calotype negative and salt print processes invented by Henry Fox Talbot. And in 1839 Cornelius shot a self-portrait daguerrotype that some historians believe was the first modern photograph of a man ever produced. For over two weeks in the summer of 2002, scientists and conservators at this prestigious facility subjected the artifact, its frame, and support materials to extensive and rigorous non-destructive testing.
Leave a few inches on top of the gravel for soil for a top layer, while leaving enough room so mulch will not wash over the wall. A Depending on how the helmet was manufactured, there may be inconsistencies with the plastic's thickness in certain areas. A If needed, re-sand and re-apply a thin coat of Bondo glazing putty, let dry, and re-sand once again. A If you live in a warm climate or are doing this in the summer months, leave your helmet out in the hot sunlight for a few hours so that it quickly bakes on.a€?a€?I cannot emphasize enough that you don't need to prime the helmet all in one step. A Just be sure that it is secure to the area you want masked because with light pressure, it will lift off. A Now, take a piece of tape and cover up one stripe so that you are perfectly aligning it to one side.
A Once you have some green covering the yellow, stop and wait about 10-15 minutes for it to dry. A If you find that you are having problems removing the paint, use a very dull butter knife and try to get the scratching started, and go back to using a fingernail if you want. A This will create an illusion of impacted metal traveling in a constant direction to the upper left of your Fett helmet. A Re-mark the visor again and trim as needed.a€?a€?You will likely be close, but still off the mark by just a bit. A It may be easier to do earlier on, but I figured I'd do last minute touch-ups when I had finally had everything installed and looking good.a€?a€?I'd recommend using a clear coat semi-gloss or flat.
A If you live in a warm climate or are doing this in the summer months, leave your helmet out in the hot sunlight for a few hours so that it quickly bakes on.I cannot emphasize enough that you don't need to prime the helmet all in one step. A I literally used 5 coats, each time having very little paint on the brush, and giving a minimum of 10-15 minutes to dry between coats.
The result was a very complete scientific and technical analysis of the object, which in turn provided better criteria for its secure and permanent case design and presentation in the lobby of the newly-renovated Harry Ransom Center.The plate also received extensive attention from the photographic technicians at the Institute, who spent a day and a half with the original heliograph in their photographic studios in order to record photographically and digitally all aspects of the plate.
A If this is the case with your helmet, use the Dremel sanding cone (it's safer to use than the sanding cylinders in terms of how much plastic will wear away).


A If you over spray, you will get paint runs which will cost A you more time and effort to correct (with sanding). Additionally, I would recommend using many small strips in order to follow the curvature of the area you want masked off.
A There should be a small amount of space between the bottom of the horseshoe graphic and the mini-chrome platform of the range finder assembly. A Take another piece and put it on the nearest stripe aligning it perfectly the side facing the other masked stripe. A The last thing you want to do is get that sticky residue on the outer part of your helmet!a€?a€?You should now have a nicely padded helmet, though fairly smelly due to all the glue. Because I am unfamiliar with the hobby versions of clear coats by manufacturers such as Floquil or Testors, I would go with something like Krylon (in the new adjustable nozzle spray cans).
The object was documented under all manner of scientific lights, including infrared and ultraviolet spectra. A Follow up with the rough grit sandpaper to get everything uniform, and then use a fine grit sandpaper to get that perfect smoothness.a€?a€?Now, looking at the front of the helmet, be sure that the front part of the T-Visor is squared off. A Unlike regular masking tape, you can't bend the Duck Tape because the adhesive doesn't bond as well. A I used a VERY light coat the first time around (because again, that chrome under-coat is slick!) and let dry for 15 minutes.
A The Light Gray is no good over the Panzer Olive Green so stick exclusively with the Lark Dark Gray. A a€?a€?When you can get a good fit, determine which method of affixing the visor would be best for your situation.
At the time of me writing this, I have not sealed my helmet, but would assume only a light, uniform coat would be sufficient to help protect your helmet against any unwanted paint removal from accidental scrapes or bumps.a€?a€?a€?The Finished Product:a€?a€?Once again, another Fett-project that I am very proud of! A Follow up with the rough grit sandpaper to get everything uniform, and then use a fine grit sandpaper to get that perfect smoothness.Now, looking at the front of the helmet, be sure that the front part of the T-Visor is squared off. A Assuming that it is, take a popsicle stick and place it to the interior sides of the T-Visor and see how straight your cuts were. A I then applied a second coat that provided nearly 100% coverage and let dry for a half hour.
Repeat this process across the rest of the kill stripes (though be aware that because of your tape placement, some stripes will have to be corrected later on). A As bad as this interior work smells after being completed, the MR Boba Fett helmet was as bad if not worse upon delivery due to the glues they used.
A IfA you want something permanent, I'd suggest you consider double-epoxy or Liquid Nails - particularly double-epoxy. Long before the first photographs were made, Chinese philosopher Mo Ti and Greek mathematicians Aristotle and Euclid described a pinhole camera in the 5th and 4th centuries BCE. A If you see any gaps between the popsicle stick and the helmet, fill the gaps with LocTite Liquid Metal paste.
A Just let it dry fully, and then apply a second coat which should completely cover the helmet.
A Your final coat should effectively cover any of the residual yellow between your kill stripes. A When those dried, I finished my work with the smaller scratches on the dome of the helmet.
In the 6th century CE, Byzantine mathematician Anthemius of Tralles used a type of camera obscura in his experimentsIbn al-Haytham (Alhazen) (965 in Basra a€“ c. A Let it sit for about 20-30 minutes and use a fine grit sandpaper to smooth the paste out, and re-test the area with a popsicle stick.
A Patience will certainly save you time and effort in the long run with this sort of project. A I left this to set overnight, and revisited it the next day using some chrome paint and a paintbrush to do some minor touch up work around the masking lines.
A Let dry for a full 30 minutes before removing the tape.a€?a€?Now, repeat this process for the other areas of yellow between the kill stripes that you couldn't get the first time around.
A If not, then re-apply the LocTite Liquid Metal and repeat the process until you are satisfied. Wilhelm Homberg described how light darkened some chemicals (photochemical effect) in 1694. The novel Giphantie (by the French Tiphaigne de la Roche, 1729a€“74) described what could be interpreted as photography.Around the year 1800, Thomas Wedgwood made the first known attempt to capture the image in a camera obscura by means of a light-sensitive substance. A If you use extra long strips of tape, you will show paint lines on the dome making it obvious that you did repair work. A Due to the extensive supply needed, I purchased some of mine through Hobbylinc, others through Tower Hobbies. A For a color listing, please look further down this column.A  All paint recommendations are by Rogue Studios of The Dented Helmet. A Please note though that sanding of Loctite Liquid Metal should be done within 25-30 minutes of the initial application. A If you wait longer than 6 hours, it becomes extremely durable and quite difficult to sand down. As with the bitumen process, the result appeared as a positive when it was suitably lit and viewed. A strong hot solution of common salt served to stabilize or fix the image by removing the remaining silver iodide. On 7 January 1839, this first complete practical photographic process was announced at a meeting of the French Academy of Sciences, and the news quickly spread. At first, all details of the process were withheld and specimens were shown only at Daguerre's studio, under his close supervision, to Academy members and other distinguished guests. Paper with a coating of silver iodide was exposed in the camera and developed into a translucent negative image. Unlike a daguerreotype, which could only be copied by rephotographing it with a camera, a calotype negative could be used to make a large number of positive prints by simple contact printing. The calotype had yet another distinction compared to other early photographic processes, in that the finished product lacked fine clarity due to its translucent paper negative. This was seen as a positive attribute for portraits because it softened the appearance of the human face. Talbot patented this process,[20] which greatly limited its adoption, and spent many years pressing lawsuits against alleged infringers. He attempted to enforce a very broad interpretation of his patent, earning himself the ill will of photographers who were using the related glass-based processes later introduced by other inventors, but he was eventually defeated. Nonetheless, Talbot's developed-out silver halide negative process is the basic technology used by chemical film cameras today. Hippolyte Bayard had also developed a method of photography but delayed announcing it, and so was not recognized as its inventor.In 1839, John Herschel made the first glass negative, but his process was difficult to reproduce. The new formula was sold by the Platinotype Company in London as Sulpho-Pyrogallol Developer.Nineteenth-century experimentation with photographic processes frequently became proprietary.
This adaptation influenced the design of cameras for decades and is still found in use today in some professional cameras. Petersburg, Russia studio Levitsky would first propose the idea to artificially light subjects in a studio setting using electric lighting along with daylight.
In 1884 George Eastman, of Rochester, New York, developed dry gel on paper, or film, to replace the photographic plate so that a photographer no longer needed to carry boxes of plates and toxic chemicals around. Now anyone could take a photograph and leave the complex parts of the process to others, and photography became available for the mass-market in 1901 with the introduction of the Kodak Brownie.A practical means of color photography was sought from the very beginning.
Results were demonstrated by Edmond Becquerel as early as 1848, but exposures lasting for hours or days were required and the captured colors were so light-sensitive they would only bear very brief inspection in dim light.The first durable color photograph was a set of three black-and-white photographs taken through red, green and blue color filters and shown superimposed by using three projectors with similar filters. It was taken by Thomas Sutton in 1861 for use in a lecture by the Scottish physicist James Clerk Maxwell, who had proposed the method in 1855.[27] The photographic emulsions then in use were insensitive to most of the spectrum, so the result was very imperfect and the demonstration was soon forgotten.
Maxwell's method is now most widely known through the early 20th century work of Sergei Prokudin-Gorskii. Included were methods for viewing a set of three color-filtered black-and-white photographs in color without having to project them, and for using them to make full-color prints on paper.[28]The first widely used method of color photography was the Autochrome plate, commercially introduced in 1907. If the individual filter elements were small enough, the three primary colors would blend together in the eye and produce the same additive color synthesis as the filtered projection of three separate photographs. Autochrome plates had an integral mosaic filter layer composed of millions of dyed potato starch grains.
Reversal processing was used to develop each plate into a transparent positive that could be viewed directly or projected with an ordinary projector. The mosaic filter layer absorbed about 90 percent of the light passing through, so a long exposure was required and a bright projection or viewing light was desirable. Competing screen plate products soon appeared and film-based versions were eventually made. A complex processing operation produced complementary cyan, magenta and yellow dye images in those layers, resulting in a subtractive color image.
Kirsch at the National Institute of Standards and Technology developed a binary digital version of an existing technology, the wirephoto drum scanner, so that alphanumeric characters, diagrams, photographs and other graphics could be transferred into digital computer memory. The lab was working on the Picturephone and on the development of semiconductor bubble memory. The essence of the design was the ability to transfer charge along the surface of a semiconductor. Michael Tompsett from Bell Labs however, who discovered that the CCD could be used as an imaging sensor.



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Author: admin | 20.03.2014 | Category: Simple Shed Plans


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