. The Ontario high school physics. Fio. 265. — Determination of freezinj; point. FiQ. 266.—Determina-tion of boiling point. 226 TEMPERATUEE Fig. 2G7.—Thermometerscales. The Centigrade scale, first proposed by Celsius, a Swedishscientist, in 1740, and subsequently modifiedby his colleague Marten Stromer, is nowuniversally employed in scientific space intervening between the freezingpoint and the boiling point is divided intoone hundred equal divisions, or degrees, andthe zero of the scale is placed at the freezingpoint, the graduations being extended bothabove and below the zero point.
. The Ontario high school physics. Fio. 265. — Determination of freezinj; point. FiQ. 266.—Determina-tion of boiling point. 226 TEMPERATUEE Fig. 2G7.—Thermometerscales. The Centigrade scale, first proposed by Celsius, a Swedishscientist, in 1740, and subsequently modifiedby his colleague Marten Stromer, is nowuniversally employed in scientific space intervening between the freezingpoint and the boiling point is divided intoone hundred equal divisions, or degrees, andthe zero of the scale is placed at the freezingpoint, the graduations being extended bothabove and below the zero point.* The Fahrenheit scale is in common useamong English-speaking people for house-hold purposes. It was proposed by GabrielDaniel Faln^enheit (1686-1736), a Germaninstrument maker. The space between the freezing point andthe boiling point is divided into one hundred and eiglity equaldivisions, each called a degree, and the zero is placed thirty-two divisions below the freezing point. The freezing point,therefore, reads 32° and
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