In Europe, the highest grades of transparent fused silica glass are made from rock crystal known as geyserite which is found in Iceland, Germany, Sweden and elsewhere.

When you change the resolution of an image, you are saying how many pixels you want to live in each inch of the image. For example, an image that has a resolution of 600 ppi will contain 600 pixels within each in of the image. 600 is a lot of pixels to live in just one inch, which is why 600ppi images will look very crisp and detailed. Now, compare that to an image with 72ppi, which has a lot fewer pixels per inch. As you've probably guessed, it won't look nearly as sharp as the 600ppi image. Resolution rule of thumb: When scanning or photographing, always try and capture the image at the largest resolution/quality.

It's better to have more information than not enough! It's much easier for image editing applications, like Photoshop, to discard any unwanted image information (reducing the size of an image) than it is to create new pixel information (enlarge an image).

The term “fused silica” is often used interchangeably with the term “fused quartz”. However, fused silica exhibits superior optical and thermal properties which are distinct from fused quartz (and other types of glass) due to its very high level of purity (99.9999%). This is because of its manufacture from one single ingredient.

Images with lower resolutions have fewer pixels, and if those few pixels are too large (usually when an image is stretched), they can become visible like the image below.

Screen images are different than images for printing because we must think about the pixel dimensions of monitors, TVs, projectors, or display, rather than PPI. Use PPI for printed images, but use pixel dimensions of the image are what really determine the size of the image and quality of how it will display on the web or devices.

Fused silica transmissionspectrum

Because of its low coefficient of thermal expansion, fused silica is also used in the production of precision mirror substrates, semiconductors and laboratory equipment.

Quartztransmissionspectrum

Small differences in purity can affect the transmission characteristics of the final product, which, for instance are superior in the UV range for fused silica compared to fused quartz.

Some professional, high-end printers may require images to be up to 600 ppi for printing. Always check with your printer/publisher about required image resolution before submitting images.

The idea has been for many years that images should be saved with a resolution of 72 PPI. . But the common misconception is that this resolution or PPI value is the deciding factor of image quality for web images, where it is actually about pixel dimensions (http://medialoot.com/blog/high-resolution-web/).

Linear diffraction grating makes learning about light and color fun for all ages! Shop Rainbow Symphony diffraction grating in your choice of 3 wavelengths.

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IRFused Silica

Non-professional printers such as inkjet, laser, and other common printers can best print images that are at least 200 to 300 ppi and higher. For images that just need to "look good", 200 ppi will work. Photographic prints are recommended to be at least 300 ppi. Images for large format poster printing can be around 150-300ppi depending on how close the image will be viewed.* *Viewing Distance Factor

Each monitor is different and has a different resolution, so it makes it difficult to design a website that contains images that will display perfectly on every type of display. Over the years, technology has improved and so has the quality of our displays. Most popular are Apple's new retina displays that are on the most recent Macbooks, iPhones, and iPads.

It is a non-crystalline glass form of silicon dioxide which is manufactured by melting crystalline silica such as sand or rock crystal.

Helium-Neon Lasers, Description Part Number / Wavelength (nm) / Emission Color Type, Price. He-Ne Lab Laser, 0.5 mW / Class II IF HN05 / 632.8 nm / Red

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Many basic properties of fused silica are the same as fused quartz, yet there are some differences that determine which material should be used for certain applications.

Fused Silicadisc

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The physical size of an image refers to the dimensions in which it would print (ex: 8.5" x 11") or the pixels dimensions of an image displayed on the web (ex: 600 pixels x 800 pixels).

For web images, we must focus on the pixel dimensions. Look at the two images below - one is 300ppi and the other is 72ppi.

Fused silica was use to fabricate some of the windows on the International Space Station and, because of its high temperature resistance, it was also used on the space shuttles.

Sapphiretransmission

Figure 3.10 shows the dependence of refractive indices of the core and cladding on the frequency for an optical fiber with relative refractive-index difference ...

This application note describes how to use the CALIPER for fast OCT imaging systems. Figure 1 shows an eye examination at an ophthalmologist. Page 2 ...

Higher resolutions mean that there more pixels per inch (PPI), resulting in more pixel information and creating a high-quality, crisp image.

The memory size is how much memory an image file takes up on a hard drive. For example, a JPG image saved on a computer may be 2 MB (megabytes), meaning that it will require 2MB of space on a drive to store that image.

Generally for using the material in the UV ultraviolet below 250nm, Fused Silica would be more suitable material for greater transmission in this wavelength.

Mar 18, 2005 — ... knife edge to cut into the returning beam of light on a moving carriage. In testing for a parabola it is necessary to measure the exact ...

Fused silicarefractive index

Fused silica offers extremely efficient wave transmission on the ultraviolet spectrum, so is commonly used in the manufacture of UV windows, UV lenses and optics.

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Quartz UVtransmission

Fused Silica is part of a family of optical materials (along with quartz and fused quartz) which share properties including a high working temperature, high melting temperature and low expansion coefficient.

A collimator is used to collimate light from a divergent source (here: an optical fiber's end face) into an approximately parallel light beam with a desired ...

Silica in its basic form – SiO2 – is the most common constituent of the earth’s crust, estimated at 60% of the material up to the first 10 miles of depth.

Because fused silica is stable for short periods at temperatures of up to 1200 degrees Celsius, it can be used in a variety of applications such as solar cells and batteries where operating temperatures are extreme.

UVFused Silica

Compare car values and prices between Edmunds and Kelley Blue Book. Learn more about the different pricing models, and discover why Kelley Blue Book is the ...

To find out more about fused silica windows from UQG Optics, or any of our optical windows call us on 01223 420329 or email our sales team at info@uqgoptics.com

Euclid discovered the law of reflection. This states that light travels in straight lines and will reflect from a smooth surface at the same angle it hit ...

Because of its strength, fused silica has been used in various extreme conditions such as in deep sea submersible craft and space craft.

Older objectives often have the focal length (lens-to-image distance) engraved on the barrel, which is a measure of the magnification. In modern microscopes, ...

Web images work differently than printed images. With printed images, we must pay close attention to resolution to ensure we get a high-quality print.

Just like web images, images for projectors should match the pixel dimensions of the projector. As with computer monitors, projectors also have their own display dimensions. For example, most 4:3 aspect projectors have a display of 1024 x 768 pixels, so an image that is 1024 x768 pixels with a 72 PPI resolution would be an ideal image size to be displayed from a projector.

BLISTER translate: die Blase, die Blase, Blasen hervorrufen. Learn more in the Cambridge English-German Dictionary.

Both of these images display at the exact same size even though their resolution varies. This is because the pixel dimensions are what really matter when working with web images. Notice that the pixel dimensions of each image are the same and therefore both images will display at the same size even though they have differing resolutions.

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