Coupling & transmission

Well there is a great difference between these two words but may feel same
practically! Once my friend Manu thomas was completing his excel project
,perhaps violated some ckt connections .Anyway a "man" call for me had
been made .At that time we were completing our project on robotics .
Stunned looking at the result!
The project included a laser based voice transmitter and receiver .
When he had removed the laser somewhat due to some power
supply problems related to the laser ,becoz he used the laser torch
which is available in market for just 30.00RS at marine drive ,
and instead of battery ,he used the 3v from the transmitter ,
connected only for the demonstration .Anyway demonstration
completed successfully.The transmission quality was great with
the help of laser .When the wire connecting the laser to the transmitter
broken it was found that there was a slight change in quality of the sound
transmitted,instead of vanishing of received signal.(he used mobile phone
music as sound source).
Astonished!proving nothing in theories!sound had been transmitted
without modulation without antenna which requires large height!
Is it possible?
what happened next

what makes a human different from a robot?

what makes a human different from a robot?
The answer is simple his cpu the gr8 "brain",with stable processor
,world had ever seen .why human beings are different from other
things in this world ?what makes u feel so?my opinion is that he
is not different from the real world ! he is a part of it just as an
electronic robot he has sensors ,cpu ,and a learning programme
which makes him different from the other things in the world .
Besides there will be some database exsisting.
For a comparison please visit toggle.
Any body intereseted please comment..

Three laws of robotics

In science fiction, the Three Laws of Robotics are a set of three rules written by Isaac Asimov, which almost all positronic robots appearing in his fiction must obey. Introduced in his 1942 short story "Runaround", although foreshadowed in a few earlier stories, the Laws state the following:

1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey orders given it by human beings except where such orders would conflict with the First Law.
3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

Later, Asimov added the Zeroth Law: "A robot may not harm humanity, or, by inaction, allow humanity to come to harm"; the rest of the laws are modified sequentially to acknowledge this.These laws are becoming essential for the design of intelligent robots.