Silver reflectivity

And then the boy understood. He loosened the reins on his horse, who galloped forward over the rocks and sand. The alchemist followed as the boy s horse ran for almost half an hour. They could no longer see the palms of the oasis—only the gigantic moon above them, and its silver reflections from the stones of the desert. Suddenly, for no apparent reason, the boy s horse began to slow. 

Limelight, Specular silver reflective film, Courtaulds Performance Films LinelR, Electric infrared Une heater. Research Inc. 

PIP S new EZ Cool one-of-a-kind hard hat visor features an extended brim and drape at the back to shield the eyes and neck from the sun. An elastic back ensures a secure fit for most hard hats. The visor also features high visibility fabric and silver reflective tape for added safety. Find out more at Protective Industrial Products, www.pipusa.com or sales pipusa.com, (800) 262-5755. Circle 326... 

Schematic illustration of flexible metal mirror design. Sol-gel coatings serve several protective roles the planarization layer prevents galvanic corrosion of the Fe-Ag couple in humid environments the protective film prevents abrasion or corrosion of the underlying silver reflective surface. From Ashley and Reed (71,72).

Partial reflections at the iimer optical interfaces of the interferometer lead to so-called secondary and tertiary fringe patterns as can be seen from figure B 1.20.4. These additional FECO patterns become clearly visible if the reflectivity of the silver mirrors is reduced. Methods for analysis of such secondary and tertiary FECO patterns were developed to extract infonnation about the topography of non-unifonn substrates [54]. 

The preparation of the reflecting silver layers for MBI deserves special attention, since it affects the optical properties of the mirrors. Another important issue is the optical phase change [ ] at the mica/silver interface, which is responsible for a wavelength-dependent shift of all FECOs. The phase change is a fimction of silver layer thickness, T, especially for T < 40 mn [54]. The roughness of the silver layers can also have an effect on the resolution of the distance measurement [59, 60]. 

Monolayers can be transferred onto many different substrates. Most LB depositions have been perfonned onto hydrophilic substrates, where monolayers are transferred when pulling tire substrate out from tire subphase. Transparent hydrophilic substrates such as glass [18,19] or quartz [20] allow spectra to be recorded in transmission mode. Examples of otlier hydrophilic substrates are aluminium [21, 22, 23 and 24], cliromium [9, 25] or tin [26], all in their oxidized state. The substrate most often used today is silicon wafer. Gold does not establish an oxide layer and is tlierefore used chiefly for reflection studies. Also used are silver [27], gallium arsenide [27, 28] or cadmium telluride wafer [28] following special treatment. 

These alloys are of vital importance in the construction of modern aircraft and rockets. Aluminum, evaporated in a vacuum, forms a highly reflective coating for both visible light and radiant heat. These coatings soon form a thin layer of the protective oxide and do not deteriorate as do silver coatings. They are used to coat telescope mirrors and to make decorative paper, packages, toys. 

The attenuated total reflectance (ATR) technique is used commonly in the near-infrared for obtaining absorption spectra of thin Aims and opaque materials. The sample, of refractive index i, is placed in direct contact with a material which is transparent in the region of interest, such as thallium bromide/thallium iodide (known as KRS-5), silver chloride or germanium, of relatively high refractive index so that Then, as Figure 3.f8... 

Laser stimulation of a silver surface results in a reflected signal over a million times stronger than that of other metals. Called laser-enhanced Raman spectroscopy, this procedure is useful in catalysis. The large neutron cross section of silver (see Fig. 2), makes this element useful as a thermal neutron flux monitor for reactor surveillance programs (see Nuclearreactors). 

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