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By Mary Bellis, About.com Guide to Inventors since 1997

The History Behind the Thermometer

Tuesday November 16, 2004
Thermometers measure temperature, by using materials that change in some way when they are heated or cooled. In a mercury or alcohol thermometer the liquid expands as it is heated and contracts when it is cooled, so the length of the liquid column is longer or shorter depending on the temperature. Modern thermometers are calibrated in standard temperature units such as Fahrenheit or Celsius.

Comments

February 21, 2007 at 2:41 pm
(1) lailai says:

u suck

March 20, 2007 at 10:20 am
(2) ashley nixon says:

i hate your web site it sucks so bad!!!!!

April 30, 2007 at 8:20 pm
(3) aj says:

THis web site sucks! I got one measly little paragraph abot theremometors! Any way, I looked up the historly, not “lame Junky CRAP!!!”

April 30, 2007 at 8:20 pm
(4) aj says:

THis web site sucks! I got one measly little paragraph abot theremometors! Any way, I looked up the history, not “lame Junky CRAP!!!”

April 30, 2007 at 8:21 pm
(5) jon says:

Spelled words wrong!

April 30, 2007 at 8:22 pm
(6) AJ says:

SHUT YOUR DIRTY PIE HOLE!!!

May 1, 2007 at 3:42 pm
(7) inventors says:

http://inventors.about.com/library/inventors/blthermometer.htm

You guys and your comments are dumb

October 22, 2007 at 12:56 pm
(8) jezz juse says:

this says NOTHING about the HISTORY of the thermometer

November 5, 2007 at 11:22 am
(9) nick says:

thanx 4 trying to help, and u guys shuld shut the hell up…they r trying there hardest to give information altho i wuld do better

November 26, 2007 at 10:00 am
(10) Brad says:

Bitch Your Worse Then Anyone Get A Life

November 26, 2007 at 10:01 am
(11) Brad's Bro says:

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November 26, 2007 at 10:02 am
(12) Brad's lil Bro says:

u are A PEE PEE Head

November 26, 2007 at 10:03 am
(13) Brian says:

Who Ever Reads This Is A Loser

November 26, 2007 at 10:09 am
(14) George W Bush says:

This Is The President of the USA And My Comment Is Get Out Of My Country Go Live In China Or Some Stupid Place Like That You Need To Get A Better Life

George W Bush

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November 26, 2007 at 10:12 am
(15) Matt Lonsdale says:

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June 25, 2008 at 1:37 pm
(16) jay jay babii says:

this doesn’t tell anything about the history of the damn thermometer

September 12, 2008 at 5:38 am
(17) bez dawggggg says:

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September 12, 2008 at 5:41 am
(18) bez dawgggggggggggggggggggg says:

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September 12, 2008 at 5:44 am
(19) corie liegh man says:

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September 12, 2008 at 5:45 am
(20) corie liegh man says:

wot the hell shut up u heffa’s

September 17, 2008 at 1:51 pm
(21) woof daddy says:

you fruikin wankshaft you wankshafts are so uncool I will kill you wankshafts so do be a friukin wankshaft

September 18, 2008 at 10:17 am
(22) Sam says:

this website doesnt even tell u anything

October 8, 2008 at 10:20 pm
(23) Pie says:

This website got me even more confused!!! now, i don’t have ANY INFORMATION about the thermometer for my essay. What kind of teacher is evil enough to tell you to write an 1000 word essay on the history of THERMOMETERS?????

October 12, 2008 at 3:52 am
(24) sarah says:

… can u write the history? thnx it’s an ok site…

November 13, 2008 at 1:05 am
(25) Tia says:

i swear dis site suz like anythng………………

November 25, 2008 at 12:24 pm
(26) Julizz says:

You guys are all losers who can’t spell and have no lives.

Get a facebook.
and a dictionary.

November 25, 2008 at 12:26 pm
(27) Julizz says:

You guys are all losers who can’t spell and have no lives.

Get a facebook.
and a dictionary.

November 25, 2008 at 12:45 pm
(28) Chandra says:

Shut the hell up JUlizz.

YOU OBVIOUSLY HAVE NO LIFE EITHER.

f-u-c-k you.

November 25, 2008 at 12:48 pm
(29) Nick Inchaustegui says:

Dude, Chandra what’s yo numba?

November 25, 2008 at 12:49 pm
(30) Chandra says:

No.

You’re gross.

December 15, 2008 at 12:08 pm
(31) sdklafji says:

omg god guys grow up

December 17, 2008 at 7:19 pm
(32) hotichick1497 says:

these ppl tried but its not getin it sorry… hi ppl hows it goin

January 27, 2009 at 11:21 am
(33) spencer says:

Early History
The first thermometers were called thermoscopes and while several inventors invented a version of the thermoscope at the same time, Italian inventor Santorio Santorio was the first inventor to put a numerical scale on the instrument. Galileo Galilei invented a rudimentary water thermometer in 1593 which, for the first time, allowed temperature variations to be measured. In 1714, Gabriel Fahrenheit invented the first mercury thermometer, the modern thermometer.
Thermometer
At the start of the seventeenth century there was no way to quantify heat.
Santorio Santorio
Santorio invented several instruments, a wind gauge, a water current meter, the “pulsilogium,” and a thermoscope, a precursor to the thermometer. Santorio was the first to apply a numerical scale to his thermoscope, which later evolved into the thermometer.

February 11, 2009 at 12:40 pm
(34) Savana M. says:

That Does Not Help Me At All ]’: ;; haha [:

February 13, 2009 at 8:19 am
(35) rashawn says:

ahhhh me so horny

March 1, 2009 at 2:34 am
(36) gaby baby says:

you tried but this has nothing to do with the history of the thermometer
but well tried

March 5, 2009 at 5:17 am
(37) Sophie- says:

Your Soo Gay !!

March 5, 2009 at 5:28 am
(38) Sophie- says:

And I Thought I Was Stupid !!

March 6, 2009 at 2:04 pm
(39) FiestyTigress says:

guys be nice its really hard to make a website if you’re not sure what you’re doing! its not that great but they are trying!

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April 3, 2009 at 10:28 pm
(41) Kristina says:

This website wasn’t the greatest but,it did help a little bit of my questions!!

June 8, 2009 at 11:57 am
(42) Mona Awad says:

I like women and uhhh stuff and this is not very informative someone start a column on women! NOW! I LIKE WOMEN!!!

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