You are viewing an obsolete version of the DU website which is no longer supported by the Administrators. Visit The New DU.
Democratic Underground Latest Greatest Lobby Journals Search Options Help Login

Reply #3: i took 2 college astronomy classes last year... [View All]

Printer-friendly format Printer-friendly format
Printer-friendly format Email this thread to a friend
Printer-friendly format Bookmark this thread
This topic is archived.
Home » Discuss » Topic Forums » Science Donate to DU
MrsBrady Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Dec-20-10 10:38 PM
Response to Original message
3. i took 2 college astronomy classes last year...
but I'm no expert. However, I did do my homework.

It's hard to conceptualize in a way. And I'm no good with the math. I can only do the math with someone walking me through it.
I get the theory, mostly. Don't ask me to do the math.

But I think it has something to do with the fact that
the earth has it's own time,
the moon has it's own time
the rocket would have it's own time as well
...they probably didn't take the same route back that they took there....
they were also on the moon for a while.
I think that would do it?

I wouldn't think that it was an enormous time difference.
My guess would be a few minutes at the most, maybe a few seconds. I don't know. Can't be that much.

Mass affects the time...if a clock is closer to the larger the mass, the slower the time...and vice versa smaller mass/faster time

And no, the earth is not the center of the universe, as the sun and planets formed in kind of a centrifuge fashion...with the heavier stuff at the middle, and gasses and junk toward the outside. I'm oversimplifying that, but they are finding this to be true, more or less, in other planetary systems as well. The earth does go around the sun...or rather the sun and the earth rotate around a central point, which I think is probably pretty close to the sun because of the larger mass of the sun.

anyway...i think that's right.
Printer Friendly | Permalink |  | Top
  -Watching show on Einstein. RandomThoughts  Dec-20-10 09:44 PM   #0 
  - Meh! It's all relative.  Vinnie From Indy   Dec-20-10 09:54 PM   #1 
  - The simplest explanation is that you don't understand time dilation.  laconicsax   Dec-20-10 10:26 PM   #2 
  - You miss the point I was making.  RandomThoughts   Dec-20-10 10:55 PM   #4 
     - The point you're making is based on a misunderstanding of relativity.  laconicsax   Dec-21-10 01:06 AM   #7 
     - When this dawns on you yuor going to get it I think.  RandomThoughts   Dec-21-10 02:46 AM   #10 
        - There's nothing for me to get. Your questions are based on a misunderstanding.  laconicsax   Dec-21-10 01:32 PM   #12 
           - LOL, you still don't get it.  RandomThoughts   Dec-21-10 02:09 PM   #13 
              - Seriously. Go to the library, find a book that covers relativity, read it.  laconicsax   Dec-21-10 08:35 PM   #15 
                 - LOL.  RandomThoughts   Dec-23-10 04:53 AM   #16 
                    - "... why would one move slower in time when observed by the other, and one move faster in time."  Jim__   Dec-23-10 10:21 AM   #17 
                    - So if each person sees the other clock slow down.  RandomThoughts   Dec-23-10 01:21 PM   #18 
                       - No, they're not in the same time reference.  Jim__   Dec-23-10 03:16 PM   #19 
                          - There is a statement.  RandomThoughts   Dec-23-10 07:10 PM   #21 
                             - Read the problem statement: "Suppose that in Jacks frame we have two synchronized clocks ...  Jim__   Dec-24-10 06:08 AM   #22 
                                - You are saying the clocks are stationary.  RandomThoughts   Dec-25-10 02:45 AM   #24 
                                   - Yes, they're stationary within a reference frame.  Jim__   Dec-25-10 05:56 AM   #25 
                                   - Here is the basic thing.  RandomThoughts   Dec-25-10 10:00 PM   #27 
                                      - I'm not sure how to interpret your diagrams.  Jim__   Dec-26-10 11:34 AM   #28 
                                         - The direction would not matter, if it did it creates inconsistencies.  RandomThoughts   Dec-26-10 01:08 PM   #29 
                                            - Let's look at your diagram from post #27 then.  Jim__   Dec-27-10 02:56 PM   #32 
                                   - there is almost nothing in the universe that  qazplm   Dec-27-10 01:34 PM   #30 
                    - Reading books is one way to learn about a subject. I suggest you try it.  laconicsax   Dec-23-10 07:01 PM   #20 
     - Vectors cancel over time.  TheMadMonk   Dec-21-10 02:10 AM   #9 
  - i took 2 college astronomy classes last year...  MrsBrady   Dec-20-10 10:38 PM   #3 
  - My arguement is not that the earth is the center.  RandomThoughts   Dec-20-10 11:01 PM   #5 
     - man you've taken one of the simplest  qazplm   Dec-24-10 11:03 AM   #23 
  - There are actually two effects here  mindwalker_i   Dec-20-10 11:42 PM   #6 
  - The Twin Paradox  bananas   Dec-21-10 01:37 AM   #8 
  - I think you've missed that:  leahcim   Dec-21-10 11:57 AM   #11 
  - "... why did time dilation happen on the trip to the moon, and then it was not canceled out ...  Jim__   Dec-21-10 03:46 PM   #14 
  - You just could have said  Confusious   Dec-25-10 10:17 AM   #26 
  - there is no location on the Earth  qazplm   Dec-27-10 01:36 PM   #31 

Home » Discuss » Topic Forums » Science Donate to DU

Powered by DCForum+ Version 1.1 Copyright 1997-2002
Software has been extensively modified by the DU administrators

Important Notices: By participating on this discussion board, visitors agree to abide by the rules outlined on our Rules page. Messages posted on the Democratic Underground Discussion Forums are the opinions of the individuals who post them, and do not necessarily represent the opinions of Democratic Underground, LLC.

Home  |  Discussion Forums  |  Journals |  Store  |  Donate

About DU  |  Contact Us  |  Privacy Policy

Got a message for Democratic Underground? Click here to send us a message.

© 2001 - 2011 Democratic Underground, LLC