Do Electromagnets work Underwater?

In summary, the question asked if electromagnetic waves work in water, to which the response clarified that while electromagnetic in the sense of Maxwell's Equations do work underwater, electromagnetic waves do not propagate well in water. However, there are some examples of wave propagation, such as blue light and very low frequency radio waves. The conversation also introduced the concept of magnetohydrodynamic drive, a type of propulsion that uses electromagnetic waves in water.
  • #1
FeDeX_LaTeX
Gold Member
437
13
Hello;

Just a question that I have been thinking about. Is there some reason why they wouldn't work in water?

Thanks.
 
Physics news on Phys.org
  • #2
FeDeX_LaTeX said:
Hello;

Just a question that I have been thinking about. Is there some reason why they wouldn't work in water?

Thanks.

You need to clarify the question a little more.

Electromagnetics in the sense of (Maxwell's Equations) do work underwater. However, electromagnetic waves (whether radio or light) do not propagate particularly well underwater, if that is what you are asking.

Blue light propagates reasonably well under water, so there is an example of wave propagation. Also, I believe the Navy has used very low frequency radio waves underwater. However, typical radio transmissions are highly attenuated under water.
 

1. How do electromagnets work underwater?

Electromagnets work by using electric currents to create a magnetic field. When the current flows through a wire, it creates a magnetic field around the wire. This magnetic field can attract or repel other magnetic materials, allowing the electromagnet to move or pick up objects.

2. Can electromagnets be used to move objects underwater?

Yes, electromagnets can be used to move objects underwater as long as the objects are made of magnetic materials. The strength of the electromagnet's magnetic field will determine how large and heavy of an object it can move.

3. Are there any limitations to using electromagnets underwater?

One limitation of using electromagnets underwater is that the magnetic field weakens with distance. This means that the farther away an object is from the electromagnet, the weaker the magnetic force will be. Additionally, the presence of other magnetic materials in the water can interfere with the electromagnet's field.

4. Are there any safety concerns with using electromagnets underwater?

Yes, there can be safety concerns when using electromagnets underwater. The electric currents used to power the electromagnet can pose a risk of electrocution if not handled properly. It is important to follow safety protocols and use proper insulation when working with electromagnets underwater.

5. Can electromagnets be used for underwater exploration or research?

Yes, electromagnets have various applications in underwater exploration and research. They can be used to pick up and move objects, collect samples, and even map the seafloor. They are also commonly used in underwater robotics for tasks such as pipeline inspection and salvage operations.

Similar threads

  • Electromagnetism
Replies
2
Views
1K
  • Electromagnetism
Replies
10
Views
541
Replies
3
Views
168
Replies
1
Views
790
  • Electromagnetism
Replies
2
Views
673
Replies
2
Views
1K
Replies
3
Views
893
Replies
4
Views
923
Replies
13
Views
960
Replies
22
Views
2K
Back
Top