How long would it take to go $20cm$ from the gun to the screen? Give you answer in microseconds, where one microsecond is ${10}^{-6}$ second.

Without doing the math, discuss how the flat plates that steer the beam would affect the place it lands on the screen. How does the mass of th outcome?

Identify a contemporary use of this idea other than the obsolete one of television tubes where the image you see is created by a beam inside the search the web or ask others for ideas, but please make the answer your own and cite your references in your response. If someone wants to try $"C$ that would be interesting for everyone to know. If you do$,$ tell us$,$ and critique whether it is correct or in what ways it is incomplete. Be aware that bo answers and invent citations, so do not rely on them to be truthful. You're welcome to discuss this topic in the Discussion this week, especially the div