until the IR illumination conditions of that region nearly constant. For example‚ if the potentiometer is tuned inside room/building for maximum sensitivity and then taken out in open sunlight‚ it will require retuning‚ since sun’s rays also contain Infrared (IR) frequencies‚ thus acting as a IR source (transmitter). This will disturb the receiver’s sensing capacity. Hence it needs to be returned to work perfectly in the new
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among other things. By looking at the shape of the spectrum of light emitted by a star‚ we can tell something about its average surface temperature. i) If we observe a star’s spectrum and find that the peak power occurs at the border between red and infrared light‚ what is the approximate surface temperature of the star? (in degrees C) 3767 C ii) If we observe a stars spectrum and find that the peak power occurs at the border between blue and ultraviolet light‚ what is the surface temperature of
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their father’s differences in child rearing dramatically affect their respective senses of security and happiness. Danny and Reuven‚ an Unbelievable Friendship On one side of the visible light spectrum is ultra-violet rays‚ and on the other‚ infrared rays. If two people were to stand on a visible light spectrum and represent their personalities based on where each other stand‚ David Malter would stand on one side‚ and miles away‚ possibly not even on the spectrum would be Isaac Saunders. The
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___________? a. Humble b. Arrogant c. Auspicious d. Joyful 8. What is the missing number? 1 4 9 ? 25 a. 15 b. 16 c. 18 d. None of these The rate of interest obtained is a. 12.5% b. 13.5% c. 15% d. 16 2/3% 10. The ozone layer restricts a. Visible light b. Infrared radiation c. X-rays and gamma rays d. Ultra violet radiation Ans: ( d ) Ans: ( c ) Ans: ( b ) 9. A man bought 20 shares of Rs 50 at 5 discount‚ the rate of dividend being 13 ½ . Ans: ( b ) Ans: ( b ) Part II: Descriptive type: Duration 45 Minutes
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term ‘T-rays’ was coined in the early 1990’s by Bell Labs to describe the spectrum in the Terahertz range (1 THz = 1012). [1] The terahertz region of the spectrum lies on the border of where electronics and optics meet between the mm-wave and infrared bands (100 GHz-10 THz). THz wave could handle ultra broad band signals ‚ have very large absorption due to water or water vapours and are transparent through many materials (e.g. plastics ‚ papers‚ cloth and oil) that are opaque in visible and
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2.9 Erbium Doped Fiber Laser The EDFLs can operate in several wave-length regions‚ ranging from visible to far infrared. The 1.55 region has attracted the most attention because it coincides with the low-loss region of silica fibers used for optical-communications [14]. The erbium absorption line that best matches with available high power pump diodes is in the 980 regime. At this wave-length‚ the absorption cross section of erbium is so low that an excessive amount of fiber would be required for
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means it’s the usage of ultra-light to measure the absorbance of the copper sulpate. The regions of the electromagnetic spectrum immediately adjacent to the high- and low- energy extremes of the visible region are known as the ultraviolet (UV) and infrared (IR) regions respectively. Thus a quantum of UV radiation possesses more energy than one in the visible region whilst the reverse is true for quantum of IR radiation. All spectrophotometric methods depends on the application of two basic laws which
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| Analysis About 30 percent of the sunlight that beams toward Earth is deflected by the outer atmosphere and scattered back into space. The rest reaches the planet’s surface and is reflected upward again as a type of slow-moving energy called infrared radiation. Heat travels due to radiation and hetas up both the thermometers. But the one inside the testtube gets heated more consistently. This happens because there is air trapped inside the testtube which acts as a heat store. As the air molecules
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with an organic base purine derivative‚ such as inosine has great biological significance.1 For instance‚ many cofactors in various enzymatic reactions are both metal ions and nucleosides‚ such as organic base purine derivatives.1 By studying the infrared data for the boinding of insoine to the metal atom‚ the interactions between the purine derivative and metal can be studied. Experimental: All reagents and solvents used were purchased from commercial suppliers. All solvents and reagents used
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