Thursday, February 11, 2010


Oct 26 10:51PM - Re: Re: ..
31 Posts
So, I was just reading through the other posts here, and I thought of some more questions. 

I really like the picture you posted of your particle accelerator! That is amazing! Where does all the "action" take place within the ring? 

I read that you had an interest in photography. I have recently really gotten into photography myself. What kinds of photography most interest you? Does your knowledge and interest in physics affect your understanding of photography?

Again, thanks for your time!


Hi M,
Glad the picture helps. The "action"? Well, the particles go around and around and collide head on at two places -- I have tried to mark them with red circles in the photo here...

Each beam of particles going around contains trillions of particles. Each time the groups of particles pass through each other, only a few actually "hit" the other beam, because the particles are so small and don't take up much space. But, since they go around again they get another chance to collide again (and again, and again,... all day long).

Calculate how many times a particle (that survives and doesn't get hit!) goes around the ring (4 miles around) in 24 hours, moving at the speed of light...

(sorry for the homework problem!) ;-)

I like lots of different styles of photography, but mostly take landscape or scenery photos, myself. You can see some of my photos at my Picasa site:
And yes, my knowledge of physics helps a great deal. Photography is all (mostly) about exposure of the film (or, CCD these days) -- time and aperture, lenses, depth of field, contrast, etc. So, there's light ray optics, time, space, diffraction, as well as all the electonic capabilities of modern cameras -- it's essentially all physics with a lot of "art" thrown in! I think its great!


Oct 28 12:41PM - Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: From our awesome Physics class!
37 Posts
wow what a beautiful picture!! Rochester doesn't compare to Chicago, but it does look pretty in the fall. That's cool about your kids I hope they succeed. What are you doing for halloween?
My wife and I will be going to a party with some friends on Friday night, and then we'll be passing out out candy at the house for a few hours on Saturday. What about you?
And don't tell me you'll be launching pumpkins at the neighbors!!

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