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InvisibleDiploidM
Cuban


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Posts: 19,274
Loc: Rabbit Hole
Geek Test
    #8084853 - 02/29/08 02:59 AM (16 years, 22 days ago)

Without looking it up, guess in what year the first accurate measurement for the speed of light was achieved.

Hint, it was done mechanically. No electronics!


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Republican Values:

1) You can't get married to your spouse who is the same sex as you.
2) You can't have an abortion no matter how much you don't want a child.
3) You can't have a certain plant in your possession or you'll get locked up with a rapist and a murderer.

4) We need a smaller, less-intrusive government.

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Offlinemakaveli8x8
Stranger
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Registered: 02/28/06
Posts: 21,636
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Re: Geek Test [Re: Diploid]
    #8084888 - 02/29/08 03:28 AM (16 years, 22 days ago)

i dunno the year, but it was when they developed sun stones to tell time.:grin:


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We were sent to hell for eternity :hellfire: Ø:omgawesome:h®
We play on earth to pass the time :foreheadslap:

Over-population the root of all Evil-brings the Elites Closer to the gates.

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OfflineSeussA
Error: divide byzero


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Re: Geek Test [Re: Diploid]
    #8084944 - 02/29/08 04:34 AM (16 years, 22 days ago)

Mitchelson & Morley was towards the later part of the 1800's... 1885 or so, if I remember correctly. I don't know if they were the first to measure it, but they are the first that I can remember.

Edit: Wow! I cheated and looked it up... It never ceases to amaze me how creative early scientists were.


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Just another spore in the wind.

Edited by Seuss (02/29/08 04:39 AM)

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OfflineLegend9123
Male


Registered: 09/24/06
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Re: Geek Test [Re: Seuss]
    #8085340 - 02/29/08 09:14 AM (16 years, 22 days ago)

1700.


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Those who would give up a little freedom to get a little security shall soon have neither.
-Benjamin Franklin

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InvisibleDieCommie


Registered: 12/11/03
Posts: 29,258
Re: Geek Test [Re: Diploid]
    #8085345 - 02/29/08 09:16 AM (16 years, 22 days ago)

It was the 1600s with the moons of jupiter if I remember correctly... Thats not really mechanical though.

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OfflineTheCow
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Re: Geek Test [Re: Diploid]
    #8085595 - 02/29/08 10:43 AM (16 years, 22 days ago)

1500 or 1600's using some kind of shutter system and two people standing far away. I forget the details, and this might have never existed also

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InvisibleDiploidM
Cuban


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Posts: 19,274
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Re: Geek Test [Re: Diploid]
    #8086215 - 02/29/08 01:36 PM (16 years, 22 days ago)

You're all pretty close. It was 1850 and it was measured using a calibrated spinning wheel with holes in it and a distant mirror. By passing a light source through the rapidly spinning wheel and watching to see the angle of the hole when the reflection becomes visible, it was possible to calculate the speed of light.

Michelson and Morley refined the technique using a spinning prism. By passing the light through the prism, then onto a distant mirror and back, they could measure the angle the reflected light beam made with the incident beam due to the rotation of the prism as the light traversed the distance. This gave a measurement within about a percent of the actual value.

These were very clever scientists to come up with these methods long before electronics were invented.


--------------------
Republican Values:

1) You can't get married to your spouse who is the same sex as you.
2) You can't have an abortion no matter how much you don't want a child.
3) You can't have a certain plant in your possession or you'll get locked up with a rapist and a murderer.

4) We need a smaller, less-intrusive government.

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Offlineidreamofpiggies
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Loc: Victoria, Australia
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Re: Geek Test [Re: Diploid]
    #8087104 - 02/29/08 05:20 PM (16 years, 22 days ago)

I was under the impression that it was Fizeau, could be very wrong tho.


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Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. - marianne williamson

What I do nobody notices... Till it stops - Garry Talent on the Bass.

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OfflineMadtowntripper
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Re: Geek Test [Re: Diploid]
    #8088196 - 02/29/08 10:31 PM (16 years, 22 days ago)

Quote:

Diploid said:

These were very clever scientists to come up with these methods long before electronics were invented.




I'm not sure what I was reading recently, it might have been a Bill Bryson book...But at any rate the author was discussing the various experiments you could do if all that you had was a straight stick.

It is actually pretty amazing, and if I could find this book ATM in the detritus of my recent move I would transcribe it for you. Suffice to say the amount you can learn about your surroundings with even simple tools is astonishing.


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After one comes, through contact with it's administrators, no longer to cherish greatly the law as a remedy in abuses, then the bottle becomes a sovereign means of direct action.  If you cannot throw it at least you can always drink out of it.  - Ernest Hemingway

If it is life that you feel you are missing I can tell you where to find it.  In the law courts, in business, in government.  There is nothing occurring in the streets. Nothing but a dumbshow composed of the helpless and the impotent.    -Cormac MacCarthy

He who learns must suffer. And even in our sleep pain that cannot forget falls drop by drop upon the heart, and in our own despair, against our will, comes wisdom to us by the awful grace of God.  - Aeschylus

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InvisibleAsante
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Re: Geek Test [Re: Diploid]
    #8088313 - 02/29/08 11:18 PM (16 years, 22 days ago)

1932


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Omnicyclion.org
higher knowledge starts here

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InvisibleWhiskeyClone
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Re: Geek Test [Re: Diploid]
    #8101330 - 03/04/08 12:08 PM (16 years, 18 days ago)

1880 something


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Welcome evermore to gods and men is the self-helping man.  For him all doors are flung wide: him all tongues greet, all honors crown, all eyes follow with desire.  Our love goes out to him and embraces him, because he did not need it.

~ R.W. Emerson, "Self-Reliance"

:heartpump:

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OfflineBrAiN
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Re: Geek Test [Re: WhiskeyClone]
    #8102129 - 03/04/08 04:37 PM (16 years, 18 days ago)

420

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Offlineflangenips
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Re: Geek Test [Re: Madtowntripper]
    #8102342 - 03/04/08 05:20 PM (16 years, 18 days ago)

Quote:

Madtowntripper said:
Quote:

Diploid said:

These were very clever scientists to come up with these methods long before electronics were invented.




I'm not sure what I was reading recently, it might have been a Bill Bryson book...But at any rate the author was discussing the various experiments you could do if all that you had was a straight stick.

It is actually pretty amazing, and if I could find this book ATM in the detritus of my recent move I would transcribe it for you. Suffice to say the amount you can learn about your surroundings with even simple tools is astonishing.




Yeah the ancient greeks found a great mathematical use for a straight stick, they apparently got the circumference of the earth by measuring the points of a shadow of a stick stuck in the ground over time. They got the arc distance and angle for that distance somehow and from that could work out circumference, and thus diameter, and thus a rough surface area etc. I think they were also able use similar methods to estimate distance to the sun and moon and roughly estimate their size too.

Go the stick!!


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All are lunatics, but he who can analyze his delusions is called a philosopher. - Ambrose Bierce

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