Electromagnetism Electromagnetic fields

In summary, electromagnetism is a branch of physics that studies the electromagnetic force and its effects on matter. It involves the interaction between electrically charged particles and the creation of electromagnetic fields. These fields are created when there is a flow of electric current through a conductor, and have various applications in our daily lives such as in electric motors, generators, and communication systems. The main difference between electric and magnetic fields is that electric fields are created by stationary or moving electric charges, while magnetic fields are created by moving electric charges. While some studies have suggested a possible link between electromagnetic fields and certain types of cancer, the majority of scientific research has not found any significant health risks from exposure to low-frequency electromagnetic fields.
  • #1
james walshe
7
0
Hi all,
can the angular frequency of a electric waves be used to determine the wavelength using the following;
ω=2πf
rearranging for the frequency, and using the following;

E=hf=(hc/λ)

or can this formula no be used as it is dealing with photons?
 
Physics news on Phys.org
  • #2
yep, that's fine. all you're really doing is using the two equations: ##\omega = 2 \pi f## and ##c=\lambda f##.
 
  • Like
Likes 1 person

What is electromagnetism?

Electromagnetism is a branch of physics that deals with the study of the electromagnetic force and its effects on matter. It involves the interaction between electrically charged particles and the resulting creation of electromagnetic fields.

How are electromagnetic fields created?

Electromagnetic fields are created when there is a flow of electric current through a conductor. This flow of current creates a magnetic field around the conductor, and when the current changes, it creates an electric field perpendicular to the magnetic field. These two fields combine to form an electromagnetic field.

What are the applications of electromagnetism?

Electromagnetism has a wide range of applications in our daily lives. Some common applications include electric motors, generators, transformers, televisions, radios, and computers. It is also used in medical equipment such as MRI machines and in communication systems like cell phones and satellites.

What is the difference between electric and magnetic fields?

An electric field is created by stationary or moving electric charges, whereas a magnetic field is created by moving electric charges. Electric fields exert forces on other electrically charged particles, while magnetic fields exert forces on moving electrically charged particles.

What are some health concerns related to electromagnetic fields?

There have been concerns about the potential health effects of exposure to electromagnetic fields. However, the majority of scientific research has not found any evidence of significant health risks from exposure to low-frequency electromagnetic fields. Some studies have suggested a possible link between electromagnetic fields and certain types of cancer, but more research is needed to confirm these findings.

Similar threads

Replies
4
Views
760
  • Electromagnetism
Replies
4
Views
811
Replies
1
Views
849
  • Electromagnetism
Replies
24
Views
1K
Replies
6
Views
799
Replies
2
Views
470
Replies
41
Views
3K
Replies
5
Views
912
  • Electromagnetism
Replies
25
Views
20K
Replies
4
Views
980
Back
Top