Filter “A.A. Cruz The University of Alabama in Huntsville Physics Department‚ 137 Madison Hall Huntsville‚ Al 35899‚ US April 2009.” Abstract In this study‚ a novel design of a Fabry-Perot band pass filter using as low and high index coating materials silicon dioxide (SiO2) and titanium dioxide (TiO2) is presented. Two high reflectance dielectric materials separated by a half wavelength “cavity” which is made up of SiO2 that allows light surrounding the central wavelength (550
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Yachts‚ the Bledsoe S&P 500 Index Fund‚ the Bledsoe Small-Cap Fund‚ the Bledsoe Large-Company Stock Fund‚ the Bledsoe Bond Fund‚ and the Bledsoe Money Market Fund. You have decided that you should invest in a diversified portfolio‚ with 70 percent of your investment in equity‚ 25 percent in bonds‚ and 5 percent in the money market fund. You have also decided to focus your equity investment on large-cap stocks‚ but you are debating whether to select the S&P 500 Index Fund or the Large-Company Stock
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Case for Index Fund Portfolios Investors holding only index funds have a better chance for success Authors RICHARD A. FERRI‚ CFA Portfolio Solutions®‚ LLC ALEX C. BENKE‚ CFP ® Betterment June 2013 A Case for Index Fund Portfolios EXECUTIVE SUMMARY The success of index investing in individual asset class categories has been widely documented. However‚ surprisingly little research is available that compares the performance of diversified portfolios of index funds with
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purpose is to test the sensory threshold of a human body. To say it in terms that are easier to understand‚ we are testing how accurate certain points are on a body with response to touch. We are using three points on the body‚ the forearm‚ palm‚ and index finger. With these three points we will be testing to see how sensitive each point on the body is by measuring the distance of which we can feel one or two points. The part of the brain that allows us to feel‚ the somatosensory cortex‚ is mapped out
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experiment we will be proving that: sinⅈsinr=n2n1 or n1sinⅈ=n2sinr where n1 and i are the index of refraction and angle with the normal to the surface for the incident ray‚ respectively‚ and n2 and r are for the refracted ray. Aim: The aim of this investigation is to prove determine the relative refractive index of perspects. Hypothesis: Sin i / Sin r will produce a constant ratio – the refractive index for perspects Variables: Independent Variable: Sine of the angle of incidence (Sin
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refractive index is determined by the formula – R = Sin i Sin r Where i = angle of incidence of the ray of light r = angle of refraction of the ray of light The refractive index of a medium gives the light bending ability of the material. When light passes from one medium to another it is bent‚ the extent to which it is bent depends on the value of the refractive index of the material. When light passes from one material into a material with greater refractive index (optically
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dot line). Extend the refracted ray. 11. Measure the angles of incidence and the angles of refraction. 12. Use your practical results to verify Snell’s Law. Results: *Refractive index for Perspex is 1.5. Experiment 1 n1 sinθ1 = n2 sinθ2 1 sin30° = n2 sin19.5° ∴n2 =1.497 (Refractive Index) Experiment 1 check 1.497 sin 19.5 = 1.5 sin19.5° 0.4997 ≈ 0.5 Experiment 2 n1 sinθ1 = n2 sinθ2 1 sin60° = n2 sin35°
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------------------------------------------------- Refractive index From Wikipedia‚ the free encyclopedia In optics the refractive index (or index of refraction) n of a substance (optical medium) is a dimensionless number that describes how light‚ or any other radiation‚ propagates through that medium. Its most elementary occurrence (and historically the first one) is in Snell’s law of refraction‚ n1sinθ1= n2sinθ2‚ where θ1 and θ2 are the angles of incidence of a ray crossing the interface between
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The Pros and Cons of Passive Management Ever since the introduction of passive index funds in the mid-1970s‚ there has been an ongoing debate over the merits of active versus passive management of pension fund assets. Each year articles chronicle the relative rise and fall in popularity of each approach to portfolio management. The advantages and disadvantages of each approach vary with the size of the portfolio as well as with the characteristics of the asset classes. In fact‚ there may be a place
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explained to me and did this project with me in group. INTRODUCTION TO INDEX NUMBERS An index number is an economic data figure reflecting price or quantity compared with a standard or base value. The base usually equals 100 and the index number is usually expressed as 100 times the ratio to the base value. For example‚ if a commodity costs twice as much in 1970 as it did in 1960‚ its index number would be 200 relative to 1960. Index numbers are used especially to compare business activity‚ the cost
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