Talk:Galileo thermometer
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[edit] Minor Edit
Changed "How to tell time with a Galilean Thermometer" to "How to read temperature with a Galilean Thermometer:" Also, it states that as temperature increases density increases... this is incorrect! Absolutecaliber 01:00, 12 November 2006 (UTC)
[edit] Invented by Galileo?
I think this page definitely needs to mention Galileo as the inventor. Apathetic 18:48, 29 December 2005 (UTC)
- If that is true, then yes, I very much agree, and it should be within the first few sentances, if not in the first. Does anyone know if Galileo actually invented the thermometer, or if he just discovered the principles that allowed some other person to invent the actual device???
[edit] Mass of glass bulb
I'm not signed up for this site but i would really like to know is what the mass is for one of those glass bulbs that hold the different amounts of liquid? Does any one know?
[edit] Misc. comments
Wow, people! Hi. At my school, we had to research an invention that involved math. I chose the Galileo thermometer as my invention, and it is really cool! It even led my dad to buy me one! Galileo thermometers may seem a bit (okay, maybe really) boring, but for people like me, it's, well, totally awesome. I don't want people to think i'm a geek or anything, but hey, science is cool.
--KiraNerrice 03:01, 25 Feb 2005 (UTC)
[edit] How it really works
The basic facts in the previous dicussio,n are correct, but the conclusions are wrong!
The Galileo Thermometer actually measures pressure in the first instance, the pressure being caused by the change in ambient temperature.
The AIR in the top of the sealed container is heated by the outside temperature and it expands, applying pressure to the surface of the liquid, which is incompressible. This in turn compresses the oval floats which then start to sink because of their increased density. (their weight stays constant but their volume decreases)
To demonstrate this, take a thermometer, ensure it is stable and then wrap a piece of ice in a wet cloth and hold it against the glass where the air is. The air will cool down and the floats will begin to rise. There will not have been time or sufficient energy outflow to change the liquid temperature.
[edit] Vandalism
Any chance of getting this page partially locked? There seem to be an odd number of random vandals about. -SabineLaGrande 07:58, 15 November 2006 (UTC)
