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Digital blackboard or electronic board for teaching has numerous benefits to both teachers and the students. pros incorporate smooth controls, enhanced pupil inspiration and engagement, teach much larger groups of students with relieve, an eco-pleasant supply of teaching, easy accessibility to notes, increase students’ participation, personalised

Tungsten carbide is a tough, brittle material built up of tungsten and carbon atoms. It’s categorised as being a metalloid, which means it has characteristics of the two metals and non-metals. Boron Carbide (B4C), often known as black diamond, would be the 3rd toughest material immediately after diamond and cubic boron nitride. it is actually a