2006-11-28 08:58:03 · 6 answers · asked by Mark L 1 in Science & Mathematics ➔ Physics
The coefficient of thermal expansion for the liquid in the thermometer (mercury, alcohol, etc.) is greater than that for the glass capillary tube it is in. Therefore, as the thermometer heats up, the liquid expands relative to the tube and is forced up the tube. Conversely, when the thermometer is cooled, the liquid is drawn back down the tube. The small bulb of liquid at the base of the thermometer magnifies this effect.
2006-11-28 16:46:36 · answer #1 · answered by Tech Dude 5 · 0⤊ 0⤋
while you're in seek of for the mathematics at the back of it: PV = nRT V=nRT/P quantity, V, is straight away proportional to temperature, T, as shown by making use of the equation above. because of the fact the temperature of the thermometer is going up, the quantity will enhance, and because it rather is enclosed in a tumbler bulb, the only way for it to pass is up the thin column. n - style of moles of substance (yet differently of announcing how plenty substance there is modern) R - perfect gas consistent (type that keeps to be the comparable)
2016-12-17 17:54:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Pressure
2006-11-28 09:04:39 · answer #3 · answered by a2k929 1 · 0⤊ 0⤋
Both the previous two people are right, what happens is as the temperature increases (or decreases) the pressure increases (or decreases), causing the mercury to rise (or fall).
2006-11-28 09:07:34 · answer #4 · answered by Where the 'morrow lives 2 · 0⤊ 0⤋
as the mercury or what not expands the pressure has one place to go that is up so there fore the hotter the mercury the more pressure the higher it goes.
2006-11-28 09:13:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Change in temperature!
2006-11-28 09:01:22 · answer #6 · answered by Marcie E 5 · 0⤊ 0⤋