Antimatter quiz
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What is the estimated cost to produce one gram of antimatter?
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More questions about Antimatter
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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Which device stores charged antiparticles in a vacuum without contact?
Answer: Penning trap
Why: Penning traps combine a uniform magnetic field with a static electric field to suspend antiparticles away from destructive matter walls.
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How many gamma rays usually come from low-energy positron annihilation?
Answer: Two
Why: At least two photons must be produced to conserve both energy and momentum simultaneously.
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Which cosmic puzzle is the unexplained excess of matter over antimatter?
Answer: Baryon asymmetry
Why: Standard physics models predict equal amounts of matter and antimatter were created, meaning the universe shouldn't exist.
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Which symmetry operation converts a particle into its antiparticle?
Answer: Charge conjugation
Why: Charge conjugation flips all internal quantum numbers like electric charge, replacing every particle in a system with its antiparticle.
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Which physicist predicted antimatter before it was ever seen?
Answer: Paul Dirac
Why: Dirac first took his equation's negative-energy states for protons, then predicted the anti-electron a year before Anderson saw it.
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Which accelerator first produced antiprotons in 1955?
Answer: Bevatron
Why: The Bevatron at Berkeley produced the first antiprotons, earning Chamberlain and Segrè a Nobel Prize.
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