There is no such thing as invisibility and - you can't prove me wrong!

The wind is invible? No way José!
You can see the wind impose it's shape on how it moves a tree. You can see the wind with it's fast and sometimes slow hands push leaves. You can see the angry wind destroy cities and forrest when it's angry and become a tornado.
Feelings? Think again bub!
No anti-bullet vest can protect you against them! You can die from them. If that's not something pretty clear I don't know what is.
Uv rays - we may not see them with our eyes but our entire body sees them - cells get old, cancer is born.
Farts? They can kill you too and...er...maybe I had enought example already to prove my point...

 

The thing that is invisible is the thing that one has yet to percieve.

 

What about thoughts?

 

Thoughts are percievable.

So they are not invisible

 

dark matter no?

 

I would consider invisible to mean undetectable by the naked eye. As in, yes I see what the wind does but I cannot see the actual wind therefore it is invisible. Invisible doesn't mean non-existent.

 

I believe the original poster was pointing more towards "impercievable"

In which case, its difficult to argue against intuition, and the obvious

The wind is as water. When underwater your just in a more dense substance. Consider your sight underwater, and consider it exactly the same as how you see wind.

Or you are in some other dimension/time

 

man nothing is invisible under the right microscope you can see the air particles in wind.

 

just because it does/moves something doesnt mean its not invisible

 

Astral Travel? or maybe Ninjas

 

Could something conceivably exist that has no impact upon anything else? If so, then that thing is invisible. Though really I think we're talking about something just being imperceptible in general. Inaudible, tasteless, etc.

 

i deffinatly believe in invisibility
we cant see infrared with our senses but can pick it up with machines
who can say there isnt more out there beyond our preceptions?

 

But technically infra-red isn't beyond our perceptions, is it? We can, after all, perceive it.

 

Infrared is beyond our physical perceptions, therefore couldn't there be other colors beyond or physical perception that we cannot perceive even with technology?

 

Some aspect of infra-red isn't beyond our physical perception, though. Though maybe that isn't the whole thing, so aspects of infra-red might actually be totally invisible. That's something to think about, aspects of things being invisible.

I'm certain there are a great deal of things we do not currently perceive with our technology, and maybe there are things which cannot be perceived with any technology.

 

What about black holes, they can not be conceived of light because it just bends into it's vortex.

 

i think you're using the word "see" a little figuratively.

an invisible man could still push you down. does that make him any less invisible?

something i thought up once (was probably stoned): what if someone designed a suit that was completely covered in cameras and mini "tv" screens. everything the camera saw was shown on the opposite side through a screen. predator style, maaaan.

 

imprecetrtive.

 

I guess that would be another situation where the majority of its aspects are invisible.

 

There is a suit out there that is made of a material kind of like a mirror except super lightweight and flexable, from a decent distance you can't even see anyone wearing it. Think I read about it in Nat Geo.