To make this standing pen you need a used CD or DVD, a ball point pen, two ring magnets and a bicycle spoke. First make a V shaped bend, 1 finger in length, on the spoke. If you have problem bending uses pliers. Then from where the V shape ends bend the spoke perpendicular to the bend.
Now mark the length of the ball pen without the cap and bend it perpendicular such that it is perpendicular to V bend also.
Now in the last leg of the spoke bend it in half along the direction of the V bend. This makes a perfect stand. Last bend is required to make sure the stand is stable.
Now place this stand on the used CD and stick a tape at both the bends on the base. Now the stand is secure on the CD.Take two ring magnets and keeps it in such a position that they are attracting. Insert one of the magnets on the pen. If the magnets are loose insert a piece of paper to make it fit tightly.
Place the other magnet on the V bend in such position that it attracts the magnet on the pen.
Now place the pen gently beneath the V bend the pen magically stands in air. This is due to magnetic attraction of ring magnets. You can gently spin the pen and it spins for a long time because the friction between the ball point pen and CD is very little. This is because there is a small ball at the end of the pen and contact area with CD is very little, reducing friction.
You can decorate it with a tape gift it to your friends or keep it on your table and enjoy this standing magnetic pen.
This work is supported by IUCAA (www.iucaa.in) and TATA Trust (http://www.tatatrusts.org/) and (www.tata.com/aboutus/sub_index/Tata-trusts)
Credits:,Ashok Rupner, Manish Jain, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org