This has always bugged me.
01 December 2005, 03:00 PM
#32
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Originally Posted by Wurzel
If a tree fell over in the forest and there was nobody around to hear it would it still make a noise?????????
the tree makes sound but as sound is interpreted by the ear/brain as noise it doesnt make any noise as there is noone available to convert the sound to noise
01 December 2005, 03:03 PM
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Originally Posted by richieh
ok given the revised brief
the tree makes sound but as sound is interpreted by the ear/brain as noise it doesnt make any noise as there is noone available to convert the sound to noise
the tree makes sound but as sound is interpreted by the ear/brain as noise it doesnt make any noise as there is noone available to convert the sound to noise
01 December 2005, 03:13 PM
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Originally Posted by Reality
what if there was someone there but they were deaf ?
therefore once again no noise
01 December 2005, 03:13 PM
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Originally Posted by Reality
These bloody muppets - ruining another good thread 
So there
01 December 2005, 03:27 PM
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Leave a perfectly decent question laying around on a quiet news day and the muppets jump all over it in seconds like a pack of hyenas.......
01 December 2005, 03:47 PM
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The chances of anything coming from mars are a million to one my friend.... BUT STILL THEY COME!!!!! 
derr derr derrrr de de de de de de derr derr Derrrr de de de de de de...
derr derr derrrr de de de de de de derr derr Derrrr de de de de de de...
01 December 2005, 04:25 PM
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*cough*
par·sec (pär'sĕk')
n.
A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.086 × 1013 kilometers, or 1.918 × 1013 miles.
Radio waves are a form of radiant energy - therefore they do not need a medium to travel through
par·sec (pär'sĕk')
n.
A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.086 × 1013 kilometers, or 1.918 × 1013 miles.
Radio waves are a form of radiant energy - therefore they do not need a medium to travel through
01 December 2005, 04:27 PM
#39
Oh, and a Parsec is a unit of volume - one cubic light year - not time either. I know nobody mentioned it but...
Alcazar
01 December 2005, 04:41 PM
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Speed of sound is only 340m/sec in air of an ICAO standard atmosphere. Sounds travels a lot fast in water and really really fast in steel for example.
Generally the denser the material, faster sound travels and also the less energy required for a given distance. Vacuum of space isn't very dense material wise, so sound doesn't travel very fast and also requires huge energies because of the distances.
So I'm told....
Ian
Generally the denser the material, faster sound travels and also the less energy required for a given distance. Vacuum of space isn't very dense material wise, so sound doesn't travel very fast and also requires huge energies because of the distances.
So I'm told....
Ian
01 December 2005, 04:46 PM
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Originally Posted by IWatkins
Speed of sound is only 340m/sec in air of an ICAO standard atmosphere. Sounds travels a lot fast in water and really really fast in steel for example.
Generally the denser the material, faster sound travels and also the less energy required for a given distance. Vacuum of space isn't very dense material wise, so sound doesn't travel very fast and also requires huge energies because of the distances.
So I'm told....
Ian
Generally the denser the material, faster sound travels and also the less energy required for a given distance. Vacuum of space isn't very dense material wise, so sound doesn't travel very fast and also requires huge energies because of the distances.
So I'm told....
Ian
01 December 2005, 05:03 PM
#43
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Originally Posted by IWatkins
Speed of sound is only 340m/sec in air of an ICAO standard atmosphere. Sounds travels a lot fast in water and really really fast in steel for example.
Generally the denser the material, faster sound travels and also the less energy required for a given distance. Vacuum of space isn't very dense material wise, so sound doesn't travel very fast and also requires huge energies because of the distances.
So I'm told....
Ian
Generally the denser the material, faster sound travels and also the less energy required for a given distance. Vacuum of space isn't very dense material wise, so sound doesn't travel very fast and also requires huge energies because of the distances.
So I'm told....
Ian
01 December 2005, 05:37 PM
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square or round?
The parsec, measured from an interstellar vehicle, is a spherical quantity.
Therefor the formula would be followed with the 4/3 pi x the radius cubed.
Why would you measure to the square corners of that area that contains your vehicle??
Just another minor question to consider.
Therefor the formula would be followed with the 4/3 pi x the radius cubed.
Why would you measure to the square corners of that area that contains your vehicle??
Just another minor question to consider.
01 December 2005, 07:08 PM
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Originally Posted by Billbill
The parsec, measured from an interstellar vehicle, is a spherical quantity.
Therefor the formula would be followed with the 4/3 pi x the radius cubed.
Why would you measure to the square corners of that area that contains your vehicle??
Just another minor question to consider.
Therefor the formula would be followed with the 4/3 pi x the radius cubed.
Why would you measure to the square corners of that area that contains your vehicle??
Just another minor question to consider.
01 December 2005, 07:33 PM
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Originally Posted by brihoppy
did the millenium falcon really do the kessel run in less than 12 parsecs then...?!?!
richie
01 December 2005, 07:36 PM
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Originally Posted by Sbradley
A light Year is a unit of distance, not time. It's the distance light travels in, you guessed it, a year.
01 December 2005, 07:57 PM
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Because light speed is...the speed of light!
Light year is...the distance something travelling at light speed covers in a year!
Got it?
Good
SB
Light year is...the distance something travelling at light speed covers in a year!
Got it?
Good
SB
01 December 2005, 08:05 PM
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Originally Posted by Swen6
It'd get there if it flew normally smart ****
, doesn't jump to light year does it
, doesn't jump to light year does it
01 December 2005, 08:09 PM
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Parsec per sec is quick.
Speed of light is just another barrier to be passed through.
I remember all the mathamaticians that said "Speed of Sound"couldn't be broken, they also had figures to "prove" their hypothesis.
It was the hesitation as you reached Mach 1 that caused the problem. If you continued to accelerate and passed through the "barrier" or shockwave you were OK.
I think it will be the same when we achieve Light Speed and go beyond.
"Where No Man Has Gone Before!"
Speed of light is just another barrier to be passed through.
I remember all the mathamaticians that said "Speed of Sound"couldn't be broken, they also had figures to "prove" their hypothesis.
It was the hesitation as you reached Mach 1 that caused the problem. If you continued to accelerate and passed through the "barrier" or shockwave you were OK.
I think it will be the same when we achieve Light Speed and go beyond.
"Where No Man Has Gone Before!"
02 December 2005, 10:32 AM
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Radio waves travel at the speed of light regardless of the strength of the power source. They do get weaker though and that does depend on the transmit power.
Sound needs a medium such as air to travel through, as was said above.
Les
Sound needs a medium such as air to travel through, as was said above.
Les
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