Fahrenheit_scale_.28first_standardized_temperature_scale.29_.281724.29 List_of_Dutch_inventions_and_discoveries

thermometer fahrenheit (symbol °f) , celsius (symbol °c) units.

various authors have credited invention of thermometer cornelis drebbel, robert fludd, galileo galilei or santorio santorio. thermometer not single invention, however, development. however, each inventor , each thermometer unique – there no standard scale. in 1665 christiaan huygens suggested using melting , boiling points of water standards, , in 1694 carlo renaldini proposed using them fixed points on universal scale. in 1701 isaac newton proposed scale of 12 degrees between melting point of ice , body temperature. in 1724 daniel gabriel fahrenheit produced temperature scale (slightly adjusted) bears name. because manufactured thermometers, using mercury (which has high coefficient of expansion) first time , quality of production provide finer scale , greater reproducibility, leading general adoption. fahrenheit scale first used temperature scale. end of 20th century, countries used celsius scale rather fahrenheit scale, though canada retained supplementary scale used alongside celsius. fahrenheit remains official scale jamaica, cayman islands, belize, bahamas, palau , united states , associated territories.