They are building a cloaking device... O_o
- Thread starter locutus12
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mctrials23 said:
IT IS TREKKERS not Trekkies.
from Wilipedia - The term "Trekkie" is sometimes considered derogatory, perhaps because of a perceived parallel to the term "groupie". Star Trek enthusiasts prefer the term "Trekker".
Anyway, I read this about two weeks ago and the scientists never mentioned Star Trek once but instead kept harking on about Harry Potters invisibility cloak.
Deleted member 651465
Deleted member 651465
If I remember they invented this about a year or so (body suit variant a lá predator).. it was in a national newspaper iirc
I remember seeing that invisibility rain coat, wasn't it fake?
metamaterials are mainly composite media's with not so usual electromagnetic & optical properties. These composites can involve the embedding of sub-wavelength inclusions, these inclusions act as replacement molecules. Change the bandwidth, frequency or channel basis and you receive different functions from the composite.
A more current use for these, although not cost effective at this time, is the transverse of mid-high frequency RF(900-2200mhz). Currently the standards for the industry is to use Copper Based waveguide, there are a few restrictions to it use's, ie bending radis, increases in attenuation & return frequency loss. Some of these new compsites will allow the RF to directly pass through the media with farless loss & may enable signals to be passed through a direct 90° or even 180° direction change and still maintain the integrity.
But I digress, the optic's of it all. Now that I would see as being wayyyy off.
A hugh issue will be multiple light source's and their direction of contact. With their current research they are working on a basis of "channeling" light, building the composite material like using many lines of waveguide. But the basis for waveguide from an RF prospective is based upon single source power, boucning down the guide, exiting the end of guide in a direction based upon its power, wave lenght, lengh & width of waveguide, and even composite density....so really really hard to determine...I do mean really difficult.
This invisability business via metamaterials will not be seen in our life time.. they will however use it well on stealthing against radar...
I think I only wanted to say the last 2 lines, but the rest just started & I cant stop it
so there 
.
metamaterials are mainly composite media's with not so usual electromagnetic & optical properties. These composites can involve the embedding of sub-wavelength inclusions, these inclusions act as replacement molecules. Change the bandwidth, frequency or channel basis and you receive different functions from the composite.
A more current use for these, although not cost effective at this time, is the transverse of mid-high frequency RF(900-2200mhz). Currently the standards for the industry is to use Copper Based waveguide, there are a few restrictions to it use's, ie bending radis, increases in attenuation & return frequency loss. Some of these new compsites will allow the RF to directly pass through the media with farless loss & may enable signals to be passed through a direct 90° or even 180° direction change and still maintain the integrity.
But I digress, the optic's of it all. Now that I would see as being wayyyy off.
A hugh issue will be multiple light source's and their direction of contact. With their current research they are working on a basis of "channeling" light, building the composite material like using many lines of waveguide. But the basis for waveguide from an RF prospective is based upon single source power, boucning down the guide, exiting the end of guide in a direction based upon its power, wave lenght, lengh & width of waveguide, and even composite density....so really really hard to determine...I do mean really difficult.
This invisability business via metamaterials will not be seen in our life time.. they will however use it well on stealthing against radar...
I think I only wanted to say the last 2 lines, but the rest just started & I cant stop it
so there .
Unfortunately they neglected to cloak your keyboard.Berserker said:Are we sure it's not cloak and dagger, especially if the Americans are involved?
Mind you, it seems someone cloaked this thread from my viewscreen - until now.
