Alex McColgan
speaker
29,301 appearances
104 recordings
1 series
first heard Nov 2024
last heard 6d ago
Alex McColgan’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 68 in all, peaking in Aug 2026 with 11.
Appearances
Does this mean that gravity affects matter and antimatter particles differently after all?
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Not necessarily,
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Let's have a look at the error bars.
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They indicate that there are two major forces of uncertainty in the results, including an uncertainty in the applied bias, possible errors in alignment, and other systematic and statistical uncertainties.
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When accounting for these uncertainties, the best fit gravitational acceleration is actually reported as 0.75g ± 0.13g ± 1.6g.
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This means that a full 1g of gravitational acceleration is still fairly consistent with the collected data.
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Future experiments will be able to determine more precisely how strongly gravity acts on antimatter, but we can already rule out speculative theories that rely on antimatter falling up instead of down.
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In the end, despite how weird and backwards the world of antimatter is, it seems that only the weak force actually applies differently to particles and antiparticles.
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But explaining the baryonic asymmetry of the universe would require much more drastic differences between the two.
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So, scientists aren't done looking for them.
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Could there be new forces and particles that interact even more weirdly with antimatter?
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Or would you be willing to accept that having so much more matter than antimatter around us is a mere coincidence?
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In any case, let us know if you've learned something new about antimatter from watching this video, and whether this is a topic you'd like to hear more on.
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I'm happy to announce we have a weekly newsletter to keep up with all the discoveries in our cosmos, and our designer Peter has made the most beautiful email you'll ever receive.
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Sign up with the link down below.
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If you enjoy Astrum videos, you'll love this.
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Showing 2281–2300 of 29,301 · page 115 of 1466
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