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The best NG in the world! --- for what it's worth
No, they think they're sharp!
The navigator© wrote: Don't they approve of hard labour? Cheers MC Flying Tadpole wrote: The clients are starting to threaten caesareans. The navigator© wrote: That's the trouble with confinement. Cheers MC Flying Tadpole wrote: The fruits of my labours. The navigator© wrote: Ah well -aren't your problems trifling? Cheers MC Flying Tadpole wrote: The navigator© wrote: It must be hard in the outback! Worse than just outback, it's been just deserts lately. -- (Dr) Tim Fatchen Director Fatchen Environmental Pty Ltd PO Box 462 Mt Barker SA 5251 Phone +61 8 8391 1164 Fax +61 8 8391 5156 ================================================== ===================== This email and any attached files are a private communication. If you have received this in error, please notify and flush it from your system without making a copy. Please note that if you are not the intended recipient, you should not peruse, use, distribute, copy or disclose any information within this message or any attached files. Doing so is an offence. ================================================== ===================== |
The best NG in the world! --- for what it's worth
That's acute or grave -depending on their point of view -of course.
Cheers MC Tim Fatchen wrote: No, they think they're sharp! The navigator© wrote: Don't they approve of hard labour? Cheers MC Flying Tadpole wrote: The clients are starting to threaten caesareans. The navigator© wrote: That's the trouble with confinement. Cheers MC Flying Tadpole wrote: The fruits of my labours. The navigator© wrote: Ah well -aren't your problems trifling? Cheers MC Flying Tadpole wrote: The navigator© wrote: It must be hard in the outback! Worse than just outback, it's been just deserts lately. |
The best NG in the world!
On Fri, 01 Aug 2003 11:09:25 -0400, wrote:
Not really. The ability to determine the source of the sound is determined by the receiver, not the transmitter. Our ears are too close together to get a bearing on low frequency sound. That would make it patently less directional. 8^) If you assume human ears are the only way to receive sound S/V Cat's Meow http://www.catsmeow.org |
The best NG in the world!
The frequency of whistles is specified in the US inland version of the ColRegs Annex III:
It describes the fundamental frequency, and range. In summary: over 200 meters 70-200Hz 2 miles 75-200 130-350 Hz 1.5 miles 20-75 250-525 Hz 1.0 miles under 20 250-525 Hz 0.5 miles It also describes the volume of various overtone ranges. For the large ships this is 140-145 dB. For the smallest is 111-120 dB. wrote in message ... On Fri, 01 Aug 2003 13:05:34 -0400, Gerard Weatherby wrote: On Fri, 01 Aug 2003 11:09:25 -0400, wrote: Not really. The ability to determine the source of the sound is determined by the receiver, not the transmitter. Our ears are too close together to get a bearing on low frequency sound. That would make it patently less directional. 8^) If you assume human ears are the only way to receive sound The context is foghorns, which are usually there expressly so that humans can hear them. BB |
The best NG in the world!
Fog yes.
"DSK" wrote in message ... Gerard Weatherby wrote: Not really. The ability to determine the source of the sound is determined by the receiver, not the transmitter. Our ears are too close together to get a bearing on low frequency sound. Does that tell us something about the shape of your head? wrote: That would make it patently less directional. 8^) Gerard Weatherby wrote: If you assume human ears are the only way to receive sound wrote: The context is foghorns, which are usually there expressly so that humans can hear them. If a horn blows in the fog, and there is nobody there to hear it, does it make a sound? DSK |
The best NG in the world!
On Fri, 01 Aug 2003 13:29:18 -0400, wrote:
Not really. The ability to determine the source of the sound is determined by the receiver, not the transmitter. Our ears are too close together to get a bearing on low frequency sound. That would make it patently less directional. 8^) If you assume human ears are the only way to receive sound The context is foghorns, which are usually there expressly so that humans can hear them. So why would being less directional be an advantage for foghorns? Wouldn't it be better if you could tell exactly which bearing the sound came from? S/V Cat's Meow http://www.catsmeow.org |
The best NG in the world!
If a horn blows in the fog, and there is nobody there to hear it, does it make a sound? Yes. -- katysails s/v Chanteuse Kirie Elite 32 http://katysails.tripod.com "Women and cats will do as they please, and men and dogs should relax and get used to the idea." - Robert A. Heinlein |
The best NG in the world!
and the higher pitched noises might have other unwanted side effects.
That's what I said in my non-physic-y way.... -- katysails s/v Chanteuse Kirie Elite 32 http://katysails.tripod.com "Women and cats will do as they please, and men and dogs should relax and get used to the idea." - Robert A. Heinlein |
The best NG in the world!
No
Nobody What? Are you deaf? -- katysails s/v Chanteuse Kirie Elite 32 http://katysails.tripod.com "Women and cats will do as they please, and men and dogs should relax and get used to the idea." - Robert A. Heinlein |
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