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NCERT had announced its decision to erase certain chapters on the Mughal Empire from class 12 history textbooks to which the BJP party and many of its politicians like Kapil Mishra have welcomed the move to eliminate part of the Mughal history from course books. This move of erasing Mughal history from syllabus attracted severe criticism from ...
Dr. Dinesh Prasad Saklani is the director of NCERT since 2022. [2] In 2023, NCERT constituted a 19-member committee, including author and Infosys Foundation chair Sudha Murthy, singer Shankar Mahadevan, and Manjul Bhargava to finalize the curriculum, textbooks and learning material for classes 3 to 12. [4]
Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other. Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism .
[9] A current is induced in a loop of wire when it is moved toward or away from a magnetic field, or a magnet is moved towards or away from it; the direction of current depends on that of the movement. [9] In April 1820, Hans Christian Ørsted observed that an electrical current in a wire caused a nearby compass needle to move. At the time of ...
The study of the past magnetic field of the Earth is known as paleomagnetism. [8] The polarity of the Earth's magnetic field is recorded in igneous rocks , and reversals of the field are thus detectable as "stripes" centered on mid-ocean ridges where the sea floor is spreading, while the stability of the geomagnetic poles between reversals has ...
The second of Maxwell's equations is known as Gauss's law for magnetism and, similarly to the first Gauss's law, it describes flux, but instead of electric flux, it describes magnetic flux. According to Gauss's law for magnetism, the flow of magnetic field through a closed surface is always zero.
primary, and secondary schooling levels (pre-K through 12). We bring together a team of public policy practitioners, education professionals, volunteers and technical officials with experience in the analysis of educational needs and in the implementation of projects at the local, provincial, national, and regional levels.
The study of electromagnetism in higher education, as a fundamental part of both physics and electrical engineering, [1] [2] [3] is typically accompanied by textbooks devoted to the subject. The American Physical Society and the American Association of Physics Teachers recommend a full year of graduate study in electromagnetism for all physics ...