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Oxygen-filled discharge tube glowing purple.
Oxygen-filled discharge tube glowing purple.
Joseph Priestley is usually given priority in the discovery.
Joseph Priestley is usually given priority in the discovery.
Antoine Lavoisier discredited the phlogiston theory.
Antoine Lavoisier discredited the phlogiston theory.
Robert H. Goddard and a liquid oxygen-gasoline rocket
Robert H. Goddard and a liquid oxygen-gasoline rocket
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Estimated distribution of dark matter and dark energy in the universe. Only the fraction of the mass and energy in the universe labeled "atoms" is com
Estimated distribution of dark matter and dark energy in the universe. Only the fraction of the mass and energy in the universe labeled "atoms" is composed of chemical elements.
Portrait of Robert Boyle, c. 1740
Portrait of Robert Boyle, c. 1740
Title page of The Sceptical Chymist, published in 1661
Title page of The Sceptical Chymist, published in 1661
Portrait of Isaac Watts by John Shury, c. 1830
Portrait of Isaac Watts by John Shury, c. 1830