DIGITAL BANDPASS FILTER - UNDER COUNTER WATER FILTER SYSTEMS - NELSON HYDRAULIC FILTERS.
Digital Bandpass Filter
- A band-pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. An example of an analogue electronic band-pass filter is an RLC circuit (a resistor–inductor–capacitor circuit).
- A filter that attenuates signals both below and above the desired passband.
- An electric circuit designed to pass only middle frequencies.
- Involving or relating to the use of computer technology
- of a circuit or device that represents magnitudes in digits; "digital computer"
- Relating to or using signals or information represented by discrete values (digits) of a physical quantity, such as voltage or magnetic polarization, to represent arithmetic numbers or approximations to numbers from a continuum or logical expressions and variables
- (of a clock or watch) Showing the time by means of displayed digits rather than hands or a pointer
Spectral filtering of light-emitting diodes for fluorescence detection [An article from: Analytica Chimica Acta]
This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
The use of light-emitting diodes (LEDs) for fluorescence detection has recently gained much interest. The broad wavelength emission of LEDs requires spectral filtering that is not necessary when using a laser. For instance, filtering the LED light using a bandpass filter improves the signal-to-background ratio for riboflavin by a factor of 70. The bandwidth of the necessary bandpass filters affects both the signal and the background in these measurements. Fluorescence signal can be maximized with wider-bandpass high-transmittance filters. Background is governed by scattering of the LED emission light transmitted by two bandpass filters. When there is large crosstalk between the filters, the LED intensity is linearly related to the background. By estimating and optimizing the crosstalk between excitation and emission filters with a method presented here, the signal-to-background can be optimized. Bandpass filters should be selected with sharp on-off transition, strong blocking outside their transmitting region and the widest bandwidth with minimal crosstalk. Using optimized spectral filtering and capillary electrophoresis analysis, LODs of 50, 3 and 20nM are obtained for riboflavin, fluorescein and eosin Y, respectively. These results are superior to those reported in the literature for 5mW LEDs.
Test digitalnog foto-aparata modifikovanog na prosirenu registraciju spektra i UV/IC delove. Ovo je preliminarni test. Predstoje probni snimci sa filterima od 330 do 1000nm, za sta su mi potrebni suncani dani (i slobodno vreme ;-))...
This is a quick test-shot taken with a digital camera modified for "full spectrum" imaging. When I get more sunny days (and free time ;-)), I`ll make some more shots using filters from 330 to 1000nm bandpass. ("Vidljivi spektar" refers to visible spectrum, and "Posle obrade" means processed image.)
Modified Yashica F521 Tests
Photo taken with a Yashica EZ Digital F521 that i have removed the lens from and replaced it with a lens with an 85 degree FOV and no infrared filter. Macro mode cleary still works and you can get a lot closer. My plan is to get an infrared filter to filter out the IR light, you can see under fluro light the colour is pretty good. I also want to try cutting up some exposed 35mm and make a bandpass filter and take some real infrared shots.
digital bandpass filter
Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow). The new ultra high contrast (UHC) LPR filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites. In addition to it's optimum spectral and optical characteristics, the UHC/LPR filter offers important features that set it apart and result in the highest quality celestial views:
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- Category: None
GREEN FILTERS USA - FUEL FILTER REMOVAL - FM BANDPASS FILTER.
Green Filters Usa
- A porous device for removing impurities or solid particles from a liquid or gas passed through it
- (filter) an electrical device that alters the frequency spectrum of signals passing through it
- (filter) device that removes something from whatever passes through it
- A screen, plate, or layer of a substance that absorbs light or other radiation or selectively absorbs some of its components
- A device for suppressing electrical or sound waves of frequencies not required
- concerned with or supporting or in conformity with the political principles of the Green Party
- Green color or pigment
- Green foliage or growing plants
- Green clothes or material
- of the color between blue and yellow in the color spectrum; similar to the color of fresh grass; "a green tree"; "green fields"; "green paint"
- United States Army
- United States Army: the army of the United States of America; the agency that organizes and trains soldiers for land warfare
- "U.S.A. (Aiight Then)" is the fourth and final single from Mobb Deep's Murda Muzik album. The b-side features the song "Spread Love". The song was originally titled "Street Kingz" and featured a short verse by fellow rapper Nas.
- United States of America
- United States: North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
Kindle Lighted Leather Cover, Green
Amazon's Kindle Lighted Leather Cover
Protect and Illuminate Your Kindle
Our sleek, form-fitted leather cover was designed to be the perfect companion for Kindle. The premium leather exterior looks and feels great, while the soft microfiber interior protects your device from scuffs and scratches. No matter where you take your Kindle, you'll never be without illumination thanks to the integrated reading light. Our innovative design allows the built-in LED light to draw its power from Kindle, so no batteries are required.
Never Be Without a Light
An integrated LED reading light lets you read comfortably anytime, anywhere. The high-quality LED light is designed specifically for Kindle's paper-like display, adding brightness without adding glare.
A permanent part of the cover, the reading light is located just above your Kindle and is optimally positioned to provide an even light across the screen. When needed, simply flip the light out and it automatically illuminates, eliminating the need for a separate power switch. To turn the light off, just snap it back into place or close the cover. Since the light draws its power from Kindle, no batteries are needed.
How It Works
Our innovative cover interfaces seamlessly with your Kindle, securing your device while providing easy access to all controls and connections. Two small connectors draw power from the device to power the attached light.
Our cover is designed specifically for the latest generation Kindle and secures your device without any hinges or straps. Simply place your Kindle into the form-fitted interior of the cover and then gently press the device into place.
Read Comfortably with One Hand
Reading with the cover on, you can easily access Kindle's navigation features and buttons, while the rounded edges offer a perfect fit in your hands. The reading light is easily accessible when the cover is open and the cover is designed to fold back, so you can read comfortably with just one hand.
On the Go
Thin, lightweight, and durable, this cover is perfect for taking Kindle wherever you go. The stylish, genuine leather exterior and form-fitting interior provide ultimate fit and protection. You'll also never be without a reading light, and since the light draws its power from Kindle, no batteries are needed.
Read Kindle easily in the dark with Amazon's revolutionary, all-new lighted leather cover.
The reading light flips out to provide an even light across your Kindle screen, adding brightness without adding glare.
Thomas Green Clemson, IV (1807-1888)
A statue of the founder of "The Clemson Agriculture College of South Carolina" (now Clemson University), as part of his will. The statue is located in front of Tillman Hall. Clemson was an American politician/statesman and also the son-in-law of Senator/Vice President John C. Calhoun.
Thomas Green Clemson statue - Clemson, SC, USA
Single handheld RAW image taken with Nikon D300s and NIKKOR 18-200mm f/3.5-5.6G ED VR II lens.
Processing in Paint Shop Pro:
* Cropped image.
* Minor retouching.
* Brightened statue using masked Curves adjustment layer.
* Applied Hard Light, High Pass Filter layer to sharpen statue, and adjusted opacity.
* Multiply-blended three copies of the sky to increase contrast.
* Applied orange Color (Legacy) blending layer to change color of the clouds.
* Further darkened clouds using Brightness/Contrast adjustment layer.
700-year-old live oak duotone
First experiment with duotone.
1) Converted in DPP to monochrome, b+w, green filter.
2) Converted in DPP to monochrome, sepia, red filter.
3) In PSE, overlaid b+w with sepia layer, using the b+w layer as the layer mask.
4) Local contrast enhancement and sharpening.
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- Category: None