Has anyone ever seen a UFO?

[Morgoth]

That still doesn't explain why the triangular flight objects hovered slowly (!) over the ground, having three huge spotlights under it's belly (what for?) and make strange and incredebly fast manouvers without any sound.

[Walsingham]

I for one can't believe anything, even a UFO, can move at unbelievable speed without making any noise at all. Air displacement alone would make some sort of noise. Has to be a visual artifact.

[Amentep]

I for one can't believe anything, even a UFO, can move at unbelievable speed without making any noise at all. Air displacement alone would make some sort of noise. Has to be a visual artifact.

 

Or maybe the noise was too low/high for human ear ranges?

[Slowtrain]

That still doesn't explain why the triangular flight objects hovered slowly (!) over the ground, having three huge spotlights under it's belly (what for?) and make strange and incredebly fast manouvers without any sound.

 

 

Eh, it's just a theory. Probably no truth to such at all. Black Triangles are a pretty common UFO sighting though so there are some specific theories related to them.

 

 

http://en.wikipedia.org/wiki/Black_triangle_(UFO)

[Checkpoint]

My dad claims to have seen "something strange made out of pipes" in the sky when he was young. He was obviosuly unable to identify it, so I guess it was a UFO. Maybe there was some kind of alien snake race living in those pipes? Maybe they were sending us snake impostors plotting to take over the world? Oh no, snakes!

[Walsingham]

I for one can't believe anything, even a UFO, can move at unbelievable speed without making any noise at all. Air displacement alone would make some sort of noise. Has to be a visual artifact.

 

Or maybe the noise was too low/high for human ear ranges?

 

You cross the sound barrier, you make noise. I don't see how you couldn't.

 

EDIT: I suppose you could use a system to create and opposing vortice of air as you went along, but I'm not sure how much energy that would require.

[Amentep]

Wasn't really thinking of "breaking the sound barrier" speed when I mentioned that, which would make things awkward, but then how far from the breaking of the barrier does a viewer have to be before they're not going to hear it?

 

Could the fast moving object is just too distant?

[mkreku]

Wasn't really thinking of "breaking the sound barrier" speed when I mentioned that, which would make things awkward, but then how far from the breaking of the barrier does a viewer have to be before they're not going to hear it?

 

Could the fast moving object is just too distant?

No, when you break the sound barrier you actually break it. It's both a visual and audible experience. At a distance it sounds like thunder, close up it's like a gigantic explosion and a shockwave. It can easily break a lot of windows. A friend's mother had her buns fly out of the oven when a jet plane did a low fly-by above her house (her boyfriend is a fighter pilot). She was not impressed.

[Gfted1]

LOL, Im sure something is lost in translation here but are you saying a sonic boom made your friends mom go into labor or literally her buns flew out of the oven?

[Gorgon]

I dunno, they could be actual buns, but what would propel them.

[mkreku]

Haha, no, I meant actual buns. It was one of those old fashioned stoves where you burn wood and put the buns above a fire. The pressure from the boom sent a shockwave down the chimney which blew the lids open and the buns flew out. Or something like that, I wasn't there, I've only been told about it.

[Nick_i_am]

This thread is the end result of Hades' experiments with self-launching catapaults.

[Amentep]

Wasn't really thinking of "breaking the sound barrier" speed when I mentioned that, which would make things awkward, but then how far from the breaking of the barrier does a viewer have to be before they're not going to hear it?

 

Could the fast moving object is just too distant?

No, when you break the sound barrier you actually break it. It's both a visual and audible experience. At a distance it sounds like thunder, close up it's like a gigantic explosion and a shockwave. It can easily break a lot of windows. A friend's mother had her buns fly out of the oven when a jet plane did a low fly-by above her house (her boyfriend is a fighter pilot). She was not impressed.

 

Well yes I know you can still hear a sonic boom from a distance, but I guess I was asking could an object still be visable but distant enough to break the sound barrier without the sound reaching the viewer.

[Dragon Lord Jones]

i saw 'em in concert in 19 ? man it was along time a go ..... awesome concert though

[Walsingham]

Wasn't really thinking of "breaking the sound barrier" speed when I mentioned that, which would make things awkward, but then how far from the breaking of the barrier does a viewer have to be before they're not going to hear it?

 

Could the fast moving object is just too distant?

No, when you break the sound barrier you actually break it. It's both a visual and audible experience. At a distance it sounds like thunder, close up it's like a gigantic explosion and a shockwave. It can easily break a lot of windows. A friend's mother had her buns fly out of the oven when a jet plane did a low fly-by above her house (her boyfriend is a fighter pilot). She was not impressed.

 

Well yes I know you can still hear a sonic boom from a distance, but I guess I was asking could an object still be visable but distant enough to break the sound barrier without the sound reaching the viewer.

 

 

In theory. I suppose that you might also be travelling above mach 1, and miss the boom wave, like a surfer. But if a ground observer saw one fly cose by you'd definitely notice it. On the other hand... if we assume for the sake of argument that these are interstellar craft then they have some emans of breaking the 'light barrier' so it could be related to that.

[samm]

i saw 'em in concert in 19 ? man it was along time a go ..... awesome concert though

Concert of what band, UFO?

 

Missing sound is just one of a number of things that are attributed to UFOs that are impossible for ... 'normal' objects. Take acceleration for example (would kill any human), going invisible, changing form and what not.