text: In 1999, the Zeilinger group reproduced this experiment with buckyballs by heating them up to 1000 Kelvin.
full_question: In 1999, the Zeilinger group reproduced this experiment with buckyballs by heating them up to 1000 Kelvin. The sum of the squares of two properties for objects produced in this experiment is less than or equal to one, according to the Englert-Greenberger relation. A variant of this experiment which shows entanglement by deleting information is called a quantum eraser. This experiment's resulting intensity is proportional to sinc ["sink"] squared of the width times pi times sine theta divided by the wavelength; that function predicts light and dark bands on a screen. This experiment disproved Isaac Newton's corpuscular theory of light. For 10 points, name this experiment first performed by Thomas Young, in which a coherent beam of light is diffracted through two openings.
first_sentence: In 1999, the Zeilinger group reproduced this experiment with buckyballs by heating them up to 1000 Kelvin.
raw_answer: Young's double-slit experiment