Sentences with phrase «slao phosphor»

Once more trouble was stewing» you could taste it» what with old Shermans phosphoring into ash across the desert, and all those blackened corpses on the road to Tripoli and Hell.

Actually, TV acts more as a filter than as a window — a filter selecting images, extracting unpleasant (and pleasant) elements, coloring others, and making a whole world seem real to us when it is in fact nothing more than thousands of bright phosphors dancing on a piece of glass.

We somehow feel that what we can see with our own eyes is true, even when what we are seeing is mediated through the lens of a camera, thousands of transistors, miles of wire, and millions of phosphors projected on the back of a picture tube.

It includes a three - piece brass rod, four slotted ends, and five phosphor bronze brushes for calibers including.22,.30, and.38 calibers, as well as 20 and 12 - gauge shotguns.

You also get nine phosphor brushes, five swabs, and four slotted ends for different gun barrel diameters.

The phosphor brushes are made from bronze, while the 100 % cotton swabs.

As a maverick chemical engineering researcher in the early 1950s, Ogawa managed to make better phosphors than his competitors.

Nakamura, the newest addition to the engineering faculty at the University of California at Santa Barbara, stunned the semiconductor world late in 1999 when he revealed that was leaving Nichia Corporation, a once small and obscure Japanese maker of phosphors for cathode - ray tubes and fluorescent lights.

For starters, the bandage's not - so - secret key ingredient is phosphors — molecules that absorb light and then emit it via a process known as phosphorescence.

Thanks to the computational approach developed by Ong's team, discovery of the phosphor took just three months — a short time frame compared to the years of trial - and - error experiments it typically takes to discover a new material.

In this study, Ong's team first compiled a list of the most frequently occurring elements in known phosphor materials.

«LED phosphors: Better red makes brighter white.»

They colour our liquid crystal displays, darken our sunglasses and provide phosphors for low - energy light bulbs and LEDs.

Chemists at Ludwig - Maximilians - Universitaet (LMU) in Munich have developed a novel type of red phosphor material, which significantly enhances the performance of white - emitting LEDs.

To the researchers» surprise, they found that there are no known materials containing a combination of strontium, lithium, aluminum and oxygen, which are four common phosphor elements.

Researchers at UC San Diego and Chonnam National University in Korea discovered and developed a new phosphor that avoids these issues.

Researchers built prototype white LED light bulbs using the new phosphor.

Under UV light, the SLAO phosphor emits either green - yellow or blue light depending on the chemical activator mixed in.

A team led by engineers at the University of California San Diego has used data mining and computational tools to discover a new phosphor material for white LEDs that is inexpensive and easy to make.

«With its unique luminescence properties the new material surpasses all red - emitting phosphors yet employed in LEDs and has great potential for industrial applications» Schnick concludes.

Researchers from KU Leuven (Belgium), the University of Strasbourg, and CNRS have discovered a new phosphor that could make next - generation fluorescent and LED lighting even cheaper and more efficient.

Dr. Peter Schmidt and his associates at the Lumileds Development Center Aachen (Philips Technologie GmbH) are currently modifying the synthesis of the new red phosphor to optimize it for large - scale manufacture.

The phosphors used in many commercial white LEDs have several disadvantages, however.

The red - emitting phosphor materials so far used are the principal factor responsible for this, because they have a particularly significant influence on the so - called color rendering index.

They also confirmed the phosphor's predicted light absorption and emission properties in the lab.

Once absorbed, the radioactive nitrogen emitted bursts of antimatter particles that were detected by phosphor plates, which behave like photosensitive film.

Calculations also predicted this material would be stable and perform well as an LED phosphor.

However, Schnick and his team had previously achieved a notable technological breakthrough by synthesizing innovative phosphor materials that allowed the blue light produced by conventional LEDs to be converted into all the colors of the visible spectrum — in particular, those at the red end.

«It's not only remarkable that we were able to predict a new phosphor compound, but one that's stable and can actually be synthesized in the lab,» said Zhenbin Wang, a nanoengineering Ph.D. candidate in Ong's research group and co-first author of the study.

The new phosphor — made of the elements strontium, lithium, aluminum and oxygen (a combination dubbed «SLAO»)-- was discovered using a systematic, high - throughput computational approach developed in the lab of Shyue Ping Ong, a nanoengineering professor at the UC San Diego Jacobs School of Engineering and lead principal investigator of the study.

The lamps are similar to fluorescent bulbs, but without the phosphor coating designed to protect people from prolonged exposure to UV rays.

The electrons then fly through the vacuum in the cavity, and hit the phosphor screen into glowing.

Much like in an old tube television where a beam of electrons moves over a phosphor screen to create images, the new microscopy technique works by scanning a beam of electrons over a sample that has been coated with specially engineered quantum dots.

Their method recycles the red lamp phosphor as a whole to reuse the powder in lamps.

In environmental biotechnology, new concepts are currently being developed to employ microalgae to recover phosphor and nitrogen from sewage and reintroduce them into the nutrient cycle by means of organic fertilizers.

Europium and yttrium can be recovered from red lamp phosphor, a powder that is used in fluorescent lamps such as neon tubes.

Thick phosphors cause the light to diverge, severely limiting the image resolution.

«To efficiently separate and recycle all components of a LED lamp, an entirely different approach is necessary — one that produces large quantities of semiconductor and phosphor materials,» says Zimmermann.

They are indium and gallium inside the semiconductor diode and rare earths like europium or terbium in the phosphor.

Much like in an old tube television where a beam of electrons moves over a phosphor screen to create images, the new technique works by scanning a beam of electrons over a sample that has been coated with the quantum dots.

In AIP Publishing's journal APL - Materials, the Japanese team describes how this solid - state phosphor promises to make future, low - power vacuum UV lamps that will be more flexible in design as well as being smaller, longer lasting and relatively heat - free — all traits that are typical advantages of solid state lighting in general.

One of the hurdles they faced was to safely fabricate the phosphor using a compound containing fluoride, which is itself a toxic, corrosive and potentially dangerous chemical to handle.

For artificial lighting throughout the museum, conservators chose novel bulbs that use ultraviolet LEDs rather than the standard blue ones, and different blends of light - emitting phosphors that better approximate natural light when operated at the low intensity needed to avoid damaging fragile pigments.

The increased oxygen levels could now attack the rocks on land and in the process release nutrients such as phosphor and iron that ended up in the oceans as nutrients for microorganisms.

Part of the blue light is absorbed by the phosphor and re-emitted at a different color.

When the power was turned down, the coating reorganized into a scattering material that bounced back more of the blue light into the phosphor, generating a warmer glow.

It is used in the phosphors of display screens, where it emits red and blue light.

The researchers hope that these engineered phosphors can be continually tweaked to meet the requirements for sensors and light - sensitive switches.

This has allowed us to tailor very precisely the properties of the silver clusters to meet our needs — in this case an efficient phosphor.

Other groups looking at the problem had focused more on blocking the phosphors» nonradiative decays.