Cool light

Bassam Z. Shakhashiri, Lloyd ) G. Williams, Glen E. Dirreen, and Ann Francis, "Cool-Light Chemiluminescence," /. Chem. Educ., Vol. 58,1981,70-72. Cyalume lightstick chemiluminescence reactions. 

The morning taste was the best. Chip of diamond in the spoon, stream of cool light, leap out of bed. Holmes in the kitchen, Morning gorgeous traffic rushed past to the shower, on her way back to her bedroom hugging him from behind. Holmes twisted away. Your hair s wet. 

I believe not, I said in a cool, light voice. Next week, my husband and I will set sail for France. We expect work to begin during our absence. ... 

ASTM D 2565-89 Standard Practice for Operating Xenon Arc-Type (Water-Cooled) Light-Exposure Apparatus With and Without Water For Exposure of Plastics, 4 pp (Comm D-20)... 

Science Is Fun in the Lab of Shakhashiri. Home Experiments Chemiluminescence— Cool Light. AvaUable from . 

Following each application the volunteer s hands were individually rinsed with 200 ml ethanol containing 0.03% NaOH. Each hand was put Into a plastic bag containing the solution and shaken 20 times. A 20 ml aliquot of the extraction mixture was then transferred from the bag to a glass sample tube, which was capped, and placed into a cooled, light-excluding container. 

Practice for operating an accelerated lightfastness xenon-arc type (water-cooled) light-exposure apparatus for the exposure of plastics for indoor applications. 

Actually, the chemistry of the phosphines is more complex. The first member of the series (PH3) of b. p.—87.4°C is spontaneously flammable in air only when completely dry, but the moist gas can become self ignitlble under diminished air pressure. It shares this curious behavior with elemental white phosphorus, whose emission of cool light in prevented by the increase of oxygen pressure (e.g. in pure oxygen), and which is more readily spontaneously ignitible when access in air is diminished. These phenomena point toward a complex reaction mechanism involving intermediary oxidation products. 

A particular processes of interest is radio-frequency heating, the transfer of energy from the trap field to the ion ensemble. In an important early study [51], it was shown that for a crystallized ensemble, even containing many particles, radio-frequency heating is very small. This was confirmed in experiments on Mg ions in a ring trap [57], where the Coulomb crystals did not melt even if the cooling light was intermpted for seconds. 

Availability of large body of cool light water around the calandria (reactor vessel) in its vault. 

Cyalume lightsticks are used to demonstrate the effect of temperature on reaction rates. Bassam Z. Shakhashiri, "Lightsticks," Chemical Demonstrations A Handbook for Teachers of Chemistry, Vol. 1 (The University of Wisconsin Press, Madison, 1983) pp. 146-152 Bassam Z Shakhashiri, Lloyd C. Williams, Glen E. Dirreen, and Ann Francis, "Cool-Light Chemiluminescence," ]. Chem. Educ., Vol. 58, 1981, 70-72. 

The samples are suspended in jars and inoculated with a suspension of the alga Oscillatoria sp. The jars are filled with a diluted salts solution and illuminated by four 20-watt cool light fluorescent bulbs for 12 hours each day. At three-day intervals, a fresh inoculum of algae is added to each sample jar. After 14 days at room temperature, the samples are removed and examined for adherent algal growth. 

In ID laser cooling the force on the atoms is Fiaser = —Ev, where the velocity dependence arises from the Doppler shift of the atom and the laser detuning, such that the faster the atom moves the more resonant the cooling light, the more photons the atom scatters, the larger the force is on the atom. Metcalf shows that in this system the phase space density evolves according to dp(p,r,t)/dt = rp p,r,t). This result shows that the phase space density of this system increases in time, thereby cooling the system. 

Such liners usually have a shelf-life of 2—3 weeks, while liners for UV curing can be stored in cool, light-excluded containers for up to 6 months. 

Shakhashiri BZ, Williams LG, Dirreen GE, Francis A (1981) Cool-light chemiluminescence. J Chem Educ 58 70-72... 

Plastics—Methods of exposure to laboratory light sources D 1499-84 D 2565-89 Practice for operating light-and water-exposure apparatus (carbon-arc type) for exposure of plastics Practice for operating xenon-arc type (water-cooled) light-exposure apparatus with and without water for exposure of plastics... 

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