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Old 01-10-2015, 01:07 AM   #41
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Quote:
Originally Posted by jeffaquarius View Post
Does anyone knows where the rogue waves come from?
What rogue waves?
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Old 01-10-2015, 09:35 AM   #42
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People say a lot of things that arent true or based on any actual evidence. That is the problem with the internet. Any idiot can get online and start sharing their random ideas or rumors they have heard. For example, you have a headache and type into google "Headache remedies". You will likely get a few people who pop up saying "My aunt had the same thing and it was brain cancer, she died the next day". The internet LOVES putting fear into people and always going with the absolute worst case scenario. Take what you read with a grain of salt and only trust things you hear from multiple reliable sources.
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Old 01-10-2015, 10:09 AM   #43
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Here's another one. I'm sure Greg knows the answer. Can a sound wave breaks a glass and why?
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Old 01-10-2015, 02:24 PM   #44
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Wave Maker Vs. Glass!

Yes. Once the sound wave generated is at the resonate frequency of a thin glass, like a nice wine glass, the oscillations will cause the glass to shatter. There are even humans that can sing notes (like the old commercials) that will break a glass. Mythbusters 2004.
It's back to shock waves and their speeds thru different mediums.


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Old 01-10-2015, 02:32 PM   #45
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Wave Maker Vs. Glass!

Rogue waves are generally created by refractive focussing, focusing by currents, modulation instability or a combination of the above. Wind action alone won't generally create a wave that's classified as a "rouge wave."

Fluidics class, 1973, University of Missouri Engineering School. But I did have to look it back up again!


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Old 01-10-2015, 02:37 PM   #46
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That's what I was talking about. The sound wave, rouge wave, and wave maker using a small pump. It's all about resonating waves or you may call it "standing wave".

http://www.cyberphysics.co.uk/topics...ding_waves.htm

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Old 01-10-2015, 05:23 PM   #47
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Wave Maker Vs. Glass!

But resonating waves are influenced by the viscosity and volume of the medium they are translating thru. For instance the standing wave you can create in a fish tank could indeed damage the tank, after a while, but the energy focused is also in the vertical vector, so you would get very wet and the contents of the tank would look like they were in a washing machine.


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Old 01-10-2015, 06:54 PM   #48
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We might not be on the same page Greg. All along I refer the wave maker as a pump to create waves in your tank which obviously are standing waves. Of course nobody wants an excessive wave amplitude that is why only small pump is used. You may be right that the force is concentrated only in vertical victor. It's not the force that will have an effect in your seal but it's the dynamic swinging of pressure. If your seal stays elastic for a long period of time then you are safe. What about for the old tanks with brittle seal? Just a minute continuous stretching of that seal will eventually give way prematurely.
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Old 01-10-2015, 06:57 PM   #49
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That's what I referred to when I said it would eventually damage the tank.


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