A ball point pen is a writing instrument which features a tip that is automatically refreshed with ink. It consists of a precisely formed metal ball seated in a socket below a reservoir of ink. By: Parul Gupta! Created By Read More …
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A ball point pen is a writing instrument which features a tip that is automatically refreshed with ink. It consists of a precisely formed metal ball seated in a socket below a reservoir of ink. By: Parul Gupta! Created By Read More …
Hungarian journalist Laszlo Biro was well aware of the problems with normal pens. To avoid clogging his pen up with thick ink, he proposed a tiny metal ball that rotated at the end of a tube of this quick drying Read More …
The rise and spread of Christianity increased the demand for permanent written religious documents. As the size of writing became smaller, both writing tools and surfaces changed. By: ashok kumar! Created By School Address Email Class Santhipuram, Andhra Pradesh Click Read More …
The presentation is about Indian sub-continent, with whom India share her boundaries, it’s location which would enrich your knowledge about India. By: ashok kumar! Created By School Address Email Class Suvransu, Manoj, Anil Govt. Boy’s High School Bhuwaneswar, Orissa Click Read More …