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2. Galileo thermometer - Wikipedia

   en.wikipedia.org/wiki/Galileo_thermometer

   In the Galileo thermometer, the small glass bulbs are partly filled with different-colored liquids. The composition of these liquids is mainly water; some contain a tiny percent of alcohol, but that is not important for the functioning of the thermometer; they merely function as fixed weights, with their colors denoting given temperatures.

3. Temperature measurement - Wikipedia

   en.wikipedia.org/wiki/Temperature_measurement

   For instance in 170 AD, physician Claudius Galenus [1]: 18 mixed equal portions of ice and boiling water to create a "neutral" temperature standard. The modern scientific field has its origins in the works by Florentine scientists in the 1600s including Galileo constructing devices able to measure relative change in temperature, but subject ...

4. Sight glass - Wikipedia

   en.wikipedia.org/wiki/Sight_glass

   Water gauge on a steam locomotive. Here the water is at the “top nut”, the maximum working level. Note the patterned backplate to help reading and toughened glass shroud. A sight glass or water gauge is a type of level sensor, a transparent tube through which the operator of a tank or boiler can observe the level of liquid contained within.

5. Casting (fishing) - Wikipedia

   en.wikipedia.org/wiki/Casting_(fishing)

   Drop-casting, on the other hand, is all about fast sinking, and the angler must bring the rod high before releasing the finger grip on the line and drop the cast into water with full force. The double-handed overhead cast, used more for distance, uses a kendo-like overhead swing to throw the line as far as possible. [3]

6. Thermometer - Wikipedia

   en.wikipedia.org/wiki/Thermometer

   A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury ...

7. AOL Mail

   mail.aol.com

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