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Wyszukujesz frazę "Das, M." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    A Classical Approach of Unified Field
    Autorzy:
    Das, M. CH.
    Misra, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/411543.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    electromagnetic field
    gravitational field
    photon
    unified field
    Opis:
    Photons contribute electromagnetic field that accompanies the gravitational field. These two fields may be, mutually, transformed through a kind of transformation matrix dependent upon the boundary conditions of the system. In this work trial would be made to find the nature of this transformation matrix considering a super system of photon in which both fields are unified. The unification of electromagnetic and gravitational fields leads to the concept of fundamental charge.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 7, 2; 73-84
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lorentz Transformation in Super System and in Super System of Photon
    Autorzy:
    Das, M. C.
    Misra, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/412190.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Lorentz transformation
    electromagnetic field
    gravitational field
    photon
    Opis:
    Lorentz transformation considers that relative velocity of the frame of references in inertial system is less than the velocity of light. If it be such that a frame is moving with velocity same as that of light with respect to a frame of observer then, Lorentz transformation in it will not be same as done in inertial system. Again photon is not only a particle or wave but it is a complex system due to the fact that it possesses spin and linear motion simultaneously. So, it will have some complex characteristics. In this work first, trial would be made to find out the process of Lorentz transformation in between two frames having relative velocity same as that of light and then, this concept, would be applied in the system of photon.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 19, 1; 8-14
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Three Simultaneous Superimposed Rotating System
    Autorzy:
    Das, M. CH.
    Misra, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/412349.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    non-inertial system
    coordinate transformation
    space-time geometry
    Opis:
    In inertial system, co-ordinate transformation from one frame to another is possible by using Lorentz transformation matrix. But in non-inertial or rotating system it is not applicable by using Lorentz transformation matrix. In this paper, co-ordinate transformation from one frame to another in three simultaneous superimposed rotating systems has been introduced. This also leads to assume a picture of space-time geometry of same system.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 8, 3; 215-219
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Space-Time Geometry of Electromagnetic Field in the System of Photon
    Autorzy:
    Das, M. CH.
    Misra, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/412284.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    space-time geometry
    unified field
    electromagnetic field
    Opis:
    In the concept of general relativity gravity is the space-time geometry. Again, a relation between electromagnetic field and gravitational field is expected. In this paper, space-time geometry of electromagnetic field in the system of photon has been introduced to unify electromagnetic field and gravitational field in flat and curvature space-time.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 9, 1; 13-16
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Properties of Carbon Nanotube (CNT) Reinforced Polyvinyl Alcohol (PVA) Composites
    Autorzy:
    Hasan, M.
    Das, S. K.
    Islam, J. M. M.
    Gafur, Md. A.
    Hoque, E
    Khan, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411675.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CNT
    PVA
    composite
    Thermal properties
    Gum acacia
    Opis:
    Homogeneous Polyvinyl alcohol (PVA)/Carbon nanotube (CNT) composite has been prepared by solution casting method using gum acacia as a surfactant. CNT content in the composite was varied from 5-10 % by weight. The thermal properties of PVA/CNT composites were investigated by Thermo Gravimetric/Differential Thermal Analyzer (TG/DTA) and Thermo Mechanical Analyzer (TMA). TG/DTA results showed that higher thermal stability in higher percentage of CNT in the composites. The 10 % CNT containing PVA composite exhibit highest onset of melting, glass transition point and offset of melting temperature and the recoded values are 330.4K, 379K and 421.3K respectively. All of the result indicates that the developed PVA/CNT composite might be promising for use in solar cell application.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 12; 59-66
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of Electrically Conductive Nanocrystalline Thin Film for Optoelectronic Applications
    Autorzy:
    Das, S K.
    Islam, J. M. M.
    Hasan, M.
    Kabir, H.
    Gafur, Md. A.
    Hoque, E.
    Khan, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/412543.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Conductive thin film
    Composite
    TiO2
    Solar cell
    Optoelectronics
    Sodium alginate
    Opis:
    Sodium alginate (TiO2) sand composites were prepared by solution casting. Purified sand was added in the composite films to increase electrical conductivity. Electrical properties such as conductivity, capacitance, dielectric constant, and loss tangent of the composites were investigated. The current voltage characteristics for all the composites showed ohmic behavior. All the electrical properties have been found to improve with the incorporation of sand (SiO2) but 6 % sand containing composite exhibits the best electrical properties. The mechanical properties tensile strength (TS), elongation at break (Eb) and Young modulus for 6 % sand containing composite film are found to be 4.445 MPa, 9.76 %, and 72.8 MPa respectively. The experimental results reveal that the blended films exhibit higher stability and improved mechanical properties of both tensile strength and elongation at break in dry state. Water absorption properties of the composites are found to decrease with the increase of sand content. Lowest water uptake properties and highest stability were demonstrated by 6 % sand containing sample. Electrically conductive composite films have useful applications for solar cells and optoelectronics. Thus, this study is very much expected to aid in the design and selection of proper composite for the potential application of solar cell and optoelectronics.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 10, 1; 90-101
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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