Search results
Results from the WOW.Com Content Network
A Celsius Galilean thermometer in two degree gradations. A risen orange orb denotes 24 °C. A Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The individual floats rise or fall in proportion to their respective density and the ...
Philo of Byzantium is credited with the construction of the first thermoscope (or Philo thermometer), an early version of the thermometer. [6] It is also thought, but not certain, that Galileo Galilei discovered the specific principle on which the device is based and built the first thermoscope in 1593.
As a temperature indicator it used red wine. (Rømer scale), The temperature scale used for his thermometer had 0 representing the temperature of a salt and ice mixture (at about 259 s). 1709 — Daniel Gabriel Fahrenheit constructed alcohol thermometers which were reproducible (i.e. two would give the same temperature)
Vapour pressure thermometer Density Galileo thermometer [45] Thermochromism Some compounds exhibit thermochromism at distinct temperature changes. Thus by tuning the phase transition temperatures for a series of substances the temperature can be quantified in discrete increments, a form of digitization. This is the basis for a liquid crystal ...
From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Galileo thermometer ...
1842 – Mayer makes a connection between work, heat, and the human metabolism based on his observations of blood made while a ship's surgeon; he calculates the mechanical equivalent of heat 1842 – William Robert Grove demonstrates the thermal dissociation of molecules into their constituent atoms, by showing that steam can be disassociated ...
The historian W.E.Knowles Middelton suggests that Marsili was added to the group to act as the simpleton used by Galileo in his work Dialogue Concerning the Two Chief World Systems. Francesco Redi – Although letters from Redi to others which state Redi was a member of the Accademia del Cimento there are no corroborating evidence from other ...
I think that this Galileo thermometer works mainly because of the small expansion coefficients of glass relative to whatever liquid is used in the tube. Sealed glass bulbs of fixed mass and approximately fixed shape regardless of temperature and pressure would rise to top or drop to the bottom depending on the temperature-dependent density and ...