Complex sentence: He founded the Uppsala Astronomical Observatory in 1741, and in 1742 he proposed the Celsius temperature scale which bears his surname, though this was revised in 1745 by Carl Linnaeus, inverting the original scale, one year after Celsius' death from tuberculosis.
Split into simpler sentences: He founded the Uppsala Astronomical Observatory in 1741, and in 1742 he proposed the Celsius temperature scale which bears his surname. The scale was inverted in 1745 by Carl Linnaeus, one year after Celsius' death from tuberculosis.