Friday, March 14, 2008

laser range finder's

Laser range finder’s, are used in C.A on the San Andreas Fault. Laser range finders are useful fore measuring the slightest movement between two points that are widely separated from each other. This is how it works two stations are mounted on the opposite side of a fault line. One station has a reflector. A pulse of laser light is sent to the reflector station, witch sends the pulse back to the sending station. The atomic clock is used to measure how long it took for the light to travel to the reflectors and back. Light travels at a velocity of 186,000 miles per second knowing that it is a matter of simple arithmetic to determine exactly how far the two stations are from each other. Weeks and months later additional measurements are made and if any movement along the fault has taken place to move the two stations closer to each other or farther than they where the time it takes for the laser pulse to travel back and forth will be different. The difference in the arrival times can be converted to a precise measurement of how far the land beneath has moved. Laser range finders can detect a change of only one fifth. I think that this is a good thing to have because one I like to know if the ground is moving two its kind of cool to know.(CH 4)

13 comments:

Anonymous said...

i love u r paper

Anonymous said...

There are quite a few grammar, spelling, and punctuation mistakes and it could be a little longer.

-ASu4

Anonymous said...

I like your paper but it could use some work with the length a little bit and the spelling and grammar errors.

EB4

Anonymous said...

its got really good info, but you might want to spilt it into three paragraphs (intro, body, and conclusion...)

i liked it nice job
-mmb 4th

Anonymous said...

this could be a little longer but good job:)


ms4

Anonymous said...

Great job with defining laser range finders. Good Work! GG4

Anonymous said...

the first comma is unnecisary and you spelt for rong, other then that it is rightous!

Anonymous said...

many grammer mistakes!
NR5

Anonymous said...

Your paper is good it had a lot of information that I didn't know before.It has a few problems but I still love it.



KP5

Anonymous said...

It had good information but the length could be lenghtened. Such as an introductin or a conclusion.

ML5

Anonymous said...

Its kinda intresting but i knids think you left it hanging. Good job so far MR.5

Anonymous said...

your paper is asom. i thaught it was so good i couldent stop reading it over & over.

Anonymous said...

it was ok like some one else said here was a few mistakes but other wise it was cool!!!jg5