Browsing by Author "Singh, Shyam"

Now showing 1 - 6 of 6
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    Diffraction grating and a plano convex lens refractometer
    (University of Namibia, 2017) Singh, Shyam
    This paper describes a method of finding the refractive index of liquids using a thin plano-convex lens and a transmission diffraction grating. Light from a low power helium- neon laser is diffracted by a transmission diffraction grating and the diffracted light is received by the thin plano-convex lens L and focuses it at the image distance v. A formula is derived to calculate the refractive index of experimental liquid at a particular temperature.
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    An inexpensive new multipurpose refrectometer
    (University of Namibia, 2014) Shafudah, Natangue H.; Singh, Shyam
    A new yet very inexpensive refrectometer for the determination of refractive index and impurity in liquids at instant has been proposed. This refrectometer requires a high resolution grating, a low power laser and a position detector. The position detector analyses and determines the impurity in a liquid directly based on its refractive index. The use of a plane mirror enhances the accuracy of the refractive indices as the measurements of required parameters are greatly increased.
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    Science: An all encompassing field
    (University of Namibia, 2013) Kazembe, Lawrence N.; Archibong, Edet F.; Chimwamurombe, Percy M.; Singh, Shyam; Chinsembu, Kazhila C.
    What unites science, as Sir David Cox mentioned, is not the subject matter we all work in, but the methodology and the thought process that help solve the problems that arise [1]. Put differently, it is the replicability of its methods, the validity of its findings and reliability of its instruments and techniques. The diversity in science now emphasizes that not a single subject matter will work alone in isolation - especially if you are working in applied sciences, but has to learn from others. Even so, contemporary applied sciences have extended this collaboration to the social sciences [2]. For instance, in implementation science they have learnt to involve social sciences to inform human behaviour if scaling-up of interventions is to be a success.
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    Self-checking impurity method in liquids
    (University of Namibia, 2013) Singh, Shyam
    We propose a very simple technique for the determination of impurity in liquids based on the refractive index. This technique requires two similar gratings, two similar low power lasers emitting same wavelength and a position detector. The change in refractive index of liquid determines the impurity in a liquid.
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    A study on cost analysis and implementation of solar power systems for rural development in Namibia: Case study - Onaushe village, Oshana Region in northern Namibia
    (University of Namibia, 2019) Katanga, Lusia; Shilongo, Elise; Shafudah, Natangue H.; Singh, Shyam
    In most developing countries, especially in rural and remote communities, lack of access to light energy is an obstacle to development. This paper presents a cost analysis study for the implementation of solar power systems in rural Namibia. The study mainly focuses on the contemporary cost for different lighting sources currently employed and compares it with the possible cost of a basic solar system being utilized. The data collected was obtained through a field survey with structured interview questions in Onaushe village, Oshana Region, northern Namibia. The results revealed that 87% of the sampled homesteads had no access to electricity and relied on traditional energy sources such as torches, candles, cellphones and firewood to meet their lighting needs. The study further found that solar power system has high initial cost compared to the lighting sources being used in rural areas. Recommendation for some relevant strategies that may enable the implementation of solar power systems are discussed.
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    Two reference beam method for recording transmission or reflection holograms of two different objects with single exposure using three similar transmission gratings
    (University of Namibia, 2015) Singh, Shyam
    A new technique of recording holograms of two objects at the same time with single exposure has been proposed. Two similar gratings have been utilized for both transmission and reflection holograms. This technique will increase the storage capacity of holograms by a factor of two. Another feature of this technique is in its simplicity.