HOW TO MAKE INVISIBLE AIRPLANES?
By using Stealth Technology which renders airplanes invisible to radar.Stealth technology relies on Maxwell's equations to create a series of tricks.A stealth fighter jet is perfectly visible to the human eye,but its radar image on an enemy radar screen is only the size of a large bird.
To make total invisible of airplanes by changing the materials within the jet fighter,reducing its steel content and using plastics and resins instead,changing the angles of its fuselage,rearranging its exhaust pipes,and so on,we can make enemy radars beams hitting the craft disperse in all directions,so they never get back to the enemy screen.Even with stealth technology,a jet fighter is not totally invisible;rather,it has deflected and dispersed as much radar as is technically possible.
The other solution is by using metamaterials in aircraft construction/materials.
Metamaterials are created by embedding tiny implants within a substance that force electromagnetic waves to bend in unorthodox ways.Metamaterials is already created in laboratory in 2006(Researchers at Duke University in Durham,North California,and Imperial College in London).If we could control the index of refraction inside a metamaterial so that light passed around an object,then the object would become invisible.
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