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This distinction of luminous and non-luminous heat, explains the elevation of temperature caused by transparent bodies.

— Joseph Fourier On the Temperatures of the Terrestrial Sphere and the Planetary Spaces (1827)

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More quotes by Joseph Fourier

Profound study of nature is the most fertile source of mathematical discoveries.

The Analytical Theory of Heat (1822)

Mathematical Analysis is as extensive as nature herself.

We cannot know the primary causes; but they are subject to simple and constant laws, which we can discover by observation, the study of which is the subject of natural philosophy.

Theorie analytique de la chaleur (1822)

The solar system is situated in a region of the universe, every point of which has a common and constant temperature, determined by the rays of light and heat which proceed from the surrounding stars. This low temperature is a little below that of the polar regions of the earth.

On the Temperatures of the Terrestrial Sphere and the Planetary Spaces (1827)

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