If there is no one in the forest and a tree falls, is there sound?  Now, no instruments!?
102078
Yes there is sound. Don't confuse sound with 'hearing'. The speed of sound is given in ft/sec, varying with what it moves through.. There is no factor there for 'hearing'. If you turn on a flashlight at night and a beam is created, but there is no one there to 'see' it, light is still emitted; the beam is certainly there. It's the same for sound. Sound is a compresson/rarifraction wave moving through a medium. The wave is there, detected or not. Or take the case of radio electromagnetic waves. The wave is certainly propagated, even if no radios are turned on.
724971
It doesn't matter...but if you shoot a mine and no one's around, will it make a sound???
1125237
this question is actually answered in my biology book..here is what it says:\n\n"perceptions, such as colors, smells, sounds and tastes, are constructions of the brain and do not exist outside it. so, if a tree falls and no one is present to hear it, is there a sound? the fall certainly produces pressure waves in the air, but if sound is defined as a perception, then there is none unless sensory receptors detect the waves and an animals brain perceives them"
956289
Yeah, it will produce a compression wave in the air - which is the definition of sound.  It doesnt matter if someone is there to hear it or not.  A sound is still made.
475814
If nobody is around to hear it, I guess we will never know!
1995
If a tree falls in the woods, and there is no one there to hear it, does it make a noise?\n\nIt doesn't matter.\n\nTHAT is existential reality.
968771
that video doesn't have sound perhaps?
345735
If everyone in the world was deaf, and the tree fell, it would still make a sound, but we just can't hear. \n\nA dog can hear things humans can't, but it doesn't mean those sounds don't exist.
213560
no, but there is equipment out there that can transform them into sounds that we can hear
796124
you will have to be in one point in the building to hear that the object will sound like a "musical scale going" down as it drops... but since objects on free fall accelerate, you would hear the 'musical scale going down" only at a very short time...\nso when you listen, listen carefully...
103290
No. Sound is a waveform of energy that travels from particle to particle. When there's no particles the wave stops. Kind of like waves of the sea don't continue on land.\n\nBut - if you have a planet with atmosphere that's thick enough you'd get sound.
65418
In the vast universe of cause and effect, yes, the tree does make a sound. It makes a sound that is heard down to the Earth's core to the vast reaches of space and into the eardrum of a snarkvorce, which is to say a creature capable of transmitting waves into melodies that in turn, turn into frequencies that can only be decifered once someone goes through a black hole and into another dimension.
329373
Well yeah it does, just cause no one's around to hear it doesnt mean the tree doesnt make a sound! I bet ya the squirrels and the deer can hear it...
532689
yes, the tree make sound.As a living thing when knife cut your finger you shout and cry.Like wise tree is also living thing it shout and cry.But as a human being we cannot hear and feel it.If you like to know it then you want to born as tree.
1325
The answer to this depends on if you are a physicist or a biologist! A physicist would say "yes" because to him/her sound is vibration of air molecules which will occur when a tree falls. \n\nA biologist, however would say "no" because sound is a perception in the brains of living things capable of perceiving it. The perception is a brain's interpretation of the nerve signals sent to it as a result of vibrations causing the eardrum to vibrate, then the ossicles in the middle ear, then the fluid in the cochlea, then the hair cells etc. There is no sound until a brain perceives it, only vibrating air.\n\nEven if the vibrations are recorded, there is still no sound until the recording is played and heard/interpreted by a capable brain.
1058932
maybe..   but who cares no one is around
107065
Neither the color blue nor any other colors have  sound.Colors don't have sounds.Colors are visible,not audible. >