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Showing posts from 2014

Science behind LED

LED or light-emitting diode is a semiconductor device that emits light on certain wavelength. Semiconductor device is an electronic component that uses the electronic properties of semiconductor material and organic semiconductors . An electronic component is any physical entity in an electronic system used to affect electrons or their associated fields. Semiconductors are the invention of modern electronic. It has an electronic conductivity (mutual of electrical resistivity and measures the capability of a material to conduct electrical current) value between conductor (type of material that allows electric current to flow in one or more directions) and insulator ( a material whose internal electric charges do not flow freely and thus creates an obstruction to conduct electric current in an electric field) . LED is consisting of a chip of semiconducting material doped (with a dopant [a mark of impurity element within a substance to alter the electrical properties] w

Can I Hug You?

I wanted to see you grow, believe me, always. I wanted to notice each and every reactions and facial expressions of yours. I dreamt about you before you stepped into my life. I gave you my heart, my concern. I thought I will also grow up with you. As I wanted to be a kid like you. I wanted to hold you tight next to my heart. I wanted to experience your first step. I wanted to feed you every day by my hand. I wanted to listen to your snore. I wanted to see you play, to run all over. I wanted to see you being naughty. I wanted to.................wanted to....................... I even don’t have enough time to hug you.

What I do when I saw a crime?

Some days back I was returning home from my work-place. The day was as usual very normal. I was engrossed in listening song and was mentally preparing myself for next day’s seminar. After decades I was supposed to participate in a seminar.  Whatever, after leaving office premises I went directly to metro station to catch a metro. Metro is the most comfortable, time saving and easily available communication transport in Delhi. I entered metro station, clear all formalities and step in to the station to board the train. While I was climbing the stairs towards platform I noticed some girls were harshly talking to a man. As I was listening to the music via head-phone I was not able to hear their conversation hence can observe the irritating faces of the girls and the man was trying to tell them something. I also noticed a cute baby wondering there. I off the music station to know the matter, but the time the girls left the place. While leaving a girl shouted atleast take your chil