Electromagnetic Disruptor?

Question

They have destructive interference right? So I've been thinking about building a machine that you can set to a lights electromagnetic frequency have it destroy the waves and then have it create a field of darkness. Do you think this is possible? If it is has anybody ever thought of this before? please let me know

oh and if you build one at least leave a based on Drake Saratoga's Idea's in the instruction manual

if you can kill the light you can create a cloaking device THE FIRST ONE EVER MADE!!!!
I want to be the greatest inventor on the earth I want my name to be known everywhere as the man who changed the world

and that is why I do this and why this important to me

Answer 1

Light does exhibit interference effects--the phenomenon you describe can be accomplished when you have a monochromatic, coherent light source. Doing it with just regular light sounds pretty darn tough. They've accomplished similar feats for sound (those earmuff things that null sound waves), but light frequencies are so much higher and light travels much faster than sound. At least with sound, you have the advantage of being able to easily send a signal ahead of the sound in order to have your nulling signal ready to go at the right time (as the original signal passes through). For light you'd have to slow the light down in a very optically dense medium somehow to let the nulling signal catch up. The technical challenges seem very imposing, so if it's not impossible, it would be pretty damn tough.

What do you suppose the advantage would be of nulling out light in this way. Light (unlike sound) is very easy to just block. So what's the point really.

If you want to cloak something, then just cloak it--block out the light. Of course, to make it really invisible, you have to transmit the light from stuff behind it to the front side so it looks like it's not really there. This is easier accomplished by taking cameras on the backside and just broadcasting whatever they see onto the front side. I don't see right offhand how nulling gives you better performance than that.

If you want to get started with inventing cool stuff--study nulling antennas and phased arrays--those things put the concept of electromagnetic interference to great effect. Once you understand them, expand on the concepts.

Answer 2

Hmmmm: very interesting notion. The idea of using destructive interference has been used with sound and in fact BOSE has used a noise canceling scheme to quiet the interior of a car and the US Navy uses a similar scheme to defeat sonar.

However, such techniques are limited to narrow band noise and are next to impossible to do with broadband sound or light.

I wish you luck, Bye Mike R

Answer 3

Normal electromagnetic frequency means radio frequency and I have worked with frequencies up to 35 ghz. Nothing there,