Is invisibility possible?

Question

http://video.stumbleupon.com/#p=sznfj12n12

This video takes about 10 min. Very interesting.

Answer 1

It can happen if you can get everyone to close their eyes!

Answer 2

Yes, if you can get everyone else to close their eye's.

Answer 3

thanks its truly interesting some scientists says that every thing in the world is from atoms and Einstein said that the mass is a kind of energy so if abody moves in the light speed it atoms will become an energy so it will disappear



An example of how an object could appear to be invisible through the use of mirrorsInvisibility is the state of an object which cannot be seen. An object in

Invisible" redirects here. For other uses, see Invisible (disambiguation).



An example of how an object could appear to be invisible through the use of mirrorsInvisibility is the state of an object which cannot be seen. An object in this state is said to be invisible (literally, "not visible"). The term is usually used as a fantasy/science fiction term, where objects are literally made unseeable by magical or technological means; however, its effects can also be seen in the real world, particularly in physics and perceptional psychology.

Since objects can be seen by light in the visible spectrum from a source reflecting off their surfaces and hitting the viewer's eye, the most natural form of invisibility (whether real or fictional) is an object which neither reflects nor absorbs light (that is, it allows light to pass through it). In nature, this is known as transparency, and is seen in many naturally occurring materials (although no naturally occurring material is 100% transparent).

Visibility also depends on the eyes of the

Answer 4

The first time I had heard about the Philadelphia Experiment was a year and a half ago, never learned too much about it to make a vaild opinion. On the other hand, I read that there is a mathematical equation of some sort that proves a cloaking invisibility is obtainable, though not sure. Although I am a huge military supporter I am sure of two things. No one in their right mind would ever jump ship. Nothing can scare me enough to give up solid ground for an open ocean even though it is only a ship. Second, I would never trust a supposedly fellow teammate that abandoned their fellow brother. They gave up all accountability.

Answer 5

yeh i think its possible to maybe be invisible like on the movie predator where u can still see a blur but being completely invisible is not possible.

i think the ship in the philadelphia experiment went back in time or an another dimension.

Answer 6

This video is about the legend of the Philadelphia Experiment. This is a legend that grew out of few facts but now is mostly myth, speculation and absurdity. The 1st link below details how this legend came to be.

Regarding invisibility, recent experiments indicate that it is possible to bend light of a specific wavelength around object via both a positive and negative index of refraction. (See 2nd link). While some success has been had in the very small realm using one light wavelength, a huge amount of scientific development is still needed to create an "invisibility cloak" which will work on all wavelengths of visible light for large objects. I would think that is still 50-100 years in the future.

Answer 7

If invisibility as it is commonly understood were possible, the person who was invisible would be completely blind. This is because that person's eyes would be transparent and unable to absorb photons. If his retinas absorbed photons at least these disembodied retinas would be seen as moving around with the person, but even then they would absorb photons from all around, not just those focused on the retina by the eyes lens, so he would still be blind.

While research is being done on invisibility it is not true invisibility, it is camouflage, a very different thing.

Answer 8

No

I'll look at this video later tonight and edit my response if different, but I can't imagine anything showing up on this video that would change my opinion.

However....there are caveats.

*** The video bored me to the point of a coma.......I couldn't force myself to sit and listen to it any longer.

So.....The caveats are:

Invisibility.....in real life things can be made to not appear to us. Our eyes are sensitive to a really small portion of the EM spectrum (electromagnetic spectrum -- I'm not gonna educate you....look it up for yourself). Its range is from about 400 nm to about 700 nm. There are ways to make the visible (viz) region of the spectrum 'disappear'.

It's not magic.....it's based on science...you know...real life?....and it has parameters within which it functions as intended. As such it is not perfect and functions on essentially planar surfaces. Negative index materials have been floating around for about a year...probably a little longer. Their ramifications are being equated to tachyons in second-grade science casts.

Eventually neg-index materials will be parametrized and defined, then it will be handed off to the engineers to figure out a way to use them. The marketing and sales wolves will be there with claws and gnashing teeth all vying for a way to capitalize on them, like they do with everything. Essentially compromising the science and cheapening the value with BS over and above what the engineers specify, and certainly what we physicists intended as well.

Irregular surfaces present a host of problems to things becoming 'invisible', as do materials on which negative index materials can be matched to.

Optics and other components have been given coatings for years and years to permit as much light as possible to pass thru them without reflection. Purpose being to lose as LITTLE light during the transition from one index material (air) to another (optics: glasses, microscopes, telescopes, binoculars, etc etc).

It will be a while before this gets neg-index stuff gets anywhere. The sales, corporate, marketing, legal wolves come to an agreement on what's best for them you can not worry about it (sort of)...unless you value your freedom, and way of life here in this country.

Ignorance is no longer a lifestyle....you need to get smart and wise about what's going on.

Answer 9

I've got better proof than that, go to a government office and ask a serious question.  No one there will be able to see you or even acknowledge that you even exist.

Answer 10

Yes, kind of. The Stealth fighters. the F-111A Nighthawks (link below) by it's shape, radar resistant (radar has a hard time bouncing off of it) materials, and being black (and usually flown at night) is for all practical purposes invisible to the human eye (at least at night) and to radar.

Is invisibility like the invisible man (optical invisibility) possible? If it is it must still be Top Secret with the military not  wanting to give away an obvious advantage.

Regarding the Philadelphia Experiment. It is entirely possible that a strong enough electro magnetic field would interfere with a radar signal. It is also well documented that exposure to a large enough EM field will effect human behavior and perception.

As for the I use to be this person in another timeline instead of who I am now that is a much more difficult claim to believe and the short video didn't offer any evidence to support his claim.

Psiexploration

Answer 11

Well, In today's world, I'd say that only theories can exist. Light is photonic (has behaviour of particles and waves.) which means separating the spectrum of light in two different ways. Chemicals do exist which can not be detected on radio waves. However, Light is almost seemingly impossible.

    Some scientist say it might be possible to terminate the refraction properties in a material but still have the same density. this theory is far from proven, though.

  In short, it may be possible but the technology we have today

is just slightly at a disadvantage. There is no officialy proven device or material that can cause invsibility.