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National Curriculum and Textbook Board traces its origins to the East Pakistan School Textbook Board which was established in 1954. In 1971, the Bangladesh School Textbook Board was established. In 1976 it was constituted as the National Curriculum and Syllabus Committee and the National Curriculum Development Centre was established in 1981.
The Bangladesh National Scientific and Technical Documentation Centre is the national scientific research archive and provides support to research and development projects in Bangladesh and is located in Dhaka, Bangladesh.
The book is still considered influential in the physics community, with generally positive reviews, but with some criticism of the book's length and presentation style. To quote Ed Ehrlich: [4] 'Gravitation' is such a prominent book on relativity that the initials of its authors MTW can be used by other books on relativity without explanation.
The second major reason for the difference in gravity at different latitudes is that the Earth's equatorial bulge (itself also caused by centrifugal force from rotation) causes objects at the Equator to be further from the planet's center than objects at the poles. The force due to gravitational attraction between two masses (a piece of the ...
Now even national curriculum books from class 5 to class 12 are distributed freely among all students and schools. The educational system of Bangladesh faces several problems. In the past, Bangladesh education was primarily a British modelled upper-class affair with all courses given in English and very little being done for the common people.
In physics, gravity (from Latin gravitas 'weight' [1]) is a fundamental interaction primarily observed as mutual attraction between all things that have mass.Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force and 10 29 times weaker than the weak interaction.
A common misconception occurs between centre of mass and centre of gravity.They are defined in similar ways but are not exactly the same quantity. Centre of mass is the mathematical description of placing all the mass in the region considered to one position, centre of gravity is a real physical quantity, the point of a body where the gravitational force acts.
The first test of Newton's law of gravitation between masses in the laboratory was the Cavendish experiment conducted by the British scientist Henry Cavendish in 1798. [5] It took place 111 years after the publication of Newton's Principia and approximately 71 years after his death.