Does the Permeability of Water Prevent Surface Disturbance in Aquariums?

In summary, the lack of disturbance at the surface of water when a fish moves in an aquarium is due to the permeability and compressibility of water. This means that the disturbance at the surface has a large radius when the fish is deep enough, but is usually negligible when the fish is near the surface due to the high density difference between air and water. Additionally, the viscosity of water causes energy loss whenever water moves, which explains why the disturbance dissipates by the time it reaches the surface.
  • #1
Kaustubh sri
22
0
When we look in the aquerium , the fish moves from here to there but there is no disturbance at the surface of water . Why is it so?

My attempt
Actually I think that this problem is due to permiability of water. Am I right or wrong?
 
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  • #2
permeability of water? Do you mean the compressibility of water? It's not that.

If the fish is deep enough the disturbance at the surface has a small large radius. Water also flows quickly so it's self levelling.
 
  • #3
What do u mean by small large radius
 
  • #4
What do you mean by 'the permeability of the water'?
 
  • #5
I mean to say water flux
 
  • #6
Kaustubh sri said:
What do u mean by small large radius

Sorry I made a typo. I meant

If the fish is deep enough the disturbance at the surface has a large radius.
 
  • #7
CWatters said:
Sorry I made a typo. I meant

If the fish is deep enough the disturbance at the surface has a large radius.

But if the fish is at the near the surface than
 
  • #8
http://www.evols.org/mediawiki/images/thumb/e/ed/BL-06-1-streamlined.png/250px-BL-06-1-streamlined.png
 
Last edited by a moderator:
  • #9
There is indeed a disturbance at the surface of the water; it is usually negligibly small because the density difference between air and water is so big.
 
  • #10
Because of the viscosity of water, any time water moves, there is a loss of energy. If the fish is deep enough under the water, the energy will have dissipated by the time the disturbance reaches the surface.
 
  • #11
Thanx Cwatters and olivermsun I got it
 

FAQ: Does the Permeability of Water Prevent Surface Disturbance in Aquariums?

1. Does water surface rise or not?

Yes, water surface can rise due to various factors such as melting glaciers and ice caps, heavy rainfall, and human activities like damming and deforestation.

2. How does water surface rise affect coastal areas?

Rising water surface can lead to coastal erosion, flooding, and saltwater intrusion into freshwater sources, which can have negative impacts on the environment, infrastructure, and human populations.

3. Is climate change causing water surface to rise?

Yes, climate change is a major contributor to water surface rise as it leads to global warming, melting of polar ice caps, and thermal expansion of the ocean.

4. Can we prevent water surface from rising?

While we cannot completely prevent water surface from rising, we can take measures to mitigate its effects by reducing greenhouse gas emissions, implementing sustainable water management practices, and adapting to the changing climate.

5. How does water surface rise impact marine life?

Rising water surface can disrupt marine ecosystems by changing water temperature, salinity, and nutrient levels. It can also displace and harm marine species, leading to loss of biodiversity and fisheries.

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