Pen
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BALL PEN Working of Ball Pen Hungarian brothers George and Ladislao Biro invent ballpoint pen. The basic idea to make a ballpoint pen is to use an ink that flows smoothly and faster drying. In ball pen a special ink is used that gets dry immediately after writing. Fluid ink is filled in the riffle. One end of the riffle is open and on the other end of the riffle a ball bearing is attached.
Ball Pen
Air pressure on the open end forces the ink to flows down and on the other end, the ball comes in contact with the ball and paste ink on the paper. Pen works on the paper on the principal of FRICTION. The advantage of the ballpoint pen is this that you can write on any type of surface and the ink is water proof and no erasable and ballpoint pen is much easier to use than fountain pen
GOVT SEN. SEC.SCHOOL GHAGGA (PATIALA) SUBMITTED BY:
AMANDEEP SINGH-9THA
UNDER THE GUIDENCE:
DEEPAK
PAREEK
(CF) GURJEET SINGH-9THA JASPAL SINGH-9THA
NISHU ARORA(CF)
Ball Pen
Air pressure on the open end forces the ink to flows down and on the other end, the ball comes in contact with the ball and paste ink on the paper. Pen works on the paper on the principal of FRICTION. The advantage of the ballpoint pen is this that you can write on any type of surface and the ink is water proof and no erasable and ballpoint pen is much easier to use than fountain pen
GOVT SEN. SEC.SCHOOL GHAGGA (PATIALA) SUBMITTED BY:
AMANDEEP SINGH-9THA
UNDER THE GUIDENCE:
DEEPAK
PAREEK
(CF) GURJEET SINGH-9THA JASPAL SINGH-9THA
NISHU ARORA(CF)
