Physics · Dawn of Modern Physics

An experiment on Cosmic rays performed by Carl D Anderson led to the accidental discovery of the positron. Anderson allowed cosmic rays to pass through a cloud chamber and a lead plate. A magnet surrounded this apparatus, caused the particles to bend in different directions based on their electric charge. The ion trail left by each positron appeared on the photographic plate with a curvature matching the mass-to-charge ratio of an electron, but in a direction that showed its charge was positive. It was the first evidence of anti-matter.

An experiment on Cosmic rays performed by Carl D Anderson led to the accidental discovery of the positron. Anderson allowed cosmic rays to pass through a cloud chamber and a lead plate. A magnet surrounded this apparatus, caused the particles to bend in different directions based on their electric charge. The ion trail left by each positron appeared on the photographic plate with a curvature matching the mass-to-charge ratio of an electron, but in a direction that showed its charge was positive. It was the first evidence of anti-matter.

An experiment on Cosmic rays performed by Carl D Anderson led to the accidental discovery of the positron. Anderson allowed cosmic rays to pass through a cloud chamber and a lead plate. A magnet surrounded this apparatus, caused the particles to bend in different directions based on their electric charge. The ion trail left by each positron appeared on the photographic plate with a curvature matching the mass-to-charge ratio of an electron, but in a direction that showed its charge was positive. It was the first evidence of anti-matter.

An experiment on Cosmic rays performed by Carl D Anderson led to the accidental discovery of the positron. Anderson allowed cosmic rays to pass through a cloud chamber and a lead plate. A magnet surrounded this apparatus, caused the particles to bend in different directions based on their electric charge. The ion trail left by each positron appeared on the photographic plate with a curvature matching the mass-to-charge ratio of an electron, but in a direction that showed its charge was positive. It was the first evidence of anti-matter.

An experiment on Cosmic rays performed by Carl D Anderson led to the accidental discovery of the positron. Anderson allowed cosmic rays to pass through a cloud chamber and a lead plate. A magnet surrounded this apparatus, caused the particles to bend in different directions based on their electric charge. The ion trail left by each positron appeared on the photographic plate with a curvature matching the mass-to-charge ratio of an electron, but in a direction that showed its charge was positive. It was the first evidence of anti-matter.