How can light act as a particle?
How can light act as a wave?
What uses microwaves, then the signal goes to a tower, then a hub, then to a switching station, then to a tower close to you?
What stops radio waves from going one satellite to the other?
Radio waves carry information from a broadcasting station to your radio and what?
What makes long-distance telephone calls possible anywhere in the world?
What kind of light consists of waves that vibrate in only one direction?
How are electromagnetic (EM) waves classified?
A thermogram uses what types of waves to identify warm and cool parts of objects?
What is the part of the spectrum you can see?
What effect is shown when electric current flows when light shines on certain substances?
In electromagnetic (EM) waves, the magnetic fields are what to the electric fields?
Which electromagnetic (EM) waves have the longest wavelengths and lowest frequencies?
The frequency remains the same on what radio waves?
When FM signals travel what changes?
Which rays have the highest frequencies?
The particle model is best explained by what?
What is electromagnetic spectrum?
In a vacuum, all EM waves have the same what?
Which waves have some electrical and magnetic properties?
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