Friday, September 4, 2009

PROPAGATION OF EM WAVES PPT FILE

The ppt file contains the basic description about the generation, characteristics, overview and reception of the different effects and terminologies associated with the propagation of EM waves through space and the earth.
Propagation of Em Waves

MATHEMATICAL CORRELATION..

Somebody asked me about the association of electric and magnetic field inside a conductor.Well, the correlation between the two is shown mathematically by the help of the laws of electromagnetics in the pdf below.
EM Relations in a Conductor

MOSQUITO REPELLENT’-------A LITTLE ‘BIG’ THING.

Recently, I went to Guwahati to appear for an exam.
On my voyage, I came in contact with personal sellers of a certain type of repellant. She was neatly, officially dressed up, grin across her face, quite inspirational at the first look. She approached me and asked for a few minutes of my time. I was awaiting the due Network night-super schedule, so I agreed.
The next few minutes she took up all the efforts of explaining to me about the ‘mosquito repellent’ product she was selling. From our conversation, I came to know that she was not from the technical background, so she couldn’t explain about the internal principles of generation of the special ultrasonic wave which keeps the mosquitoes at bay.
I decided to carry the research myself and what I found out is a real simple laboratory principle…a basic electronics application. To know more about the working of these simple selling devices, download the pdf attached to this document. So that the next time you meet them, you should be explaining to them what they fail to explain to you.

Mosquito Repellent

SOLDERING PRACTICE THEORY

Soldering practice is the oldest mathod of making connections in a general purpose veroboard or even in the Printed Circuit Board. The description of the important components and materials used in general soldering practice in your laboratories is detailed in the pdf.
Soldering

NUMERICAL SHEET 3

Numerical Sheet3

NUMERICAL SHEET 2

Numerical Sheet2

Thursday, September 3, 2009