Alex McColgan

speaker

28,875 appearances 103 recordings 1 series first heard Nov 2024 last heard 2d ago

Alex McColgan’s voice in public audio — every appearance, attributed to the second.

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recordings per month · last 12 months

Recordings per month over the last 12 months — 67 in all, peaking in Aug 2026 with 11.

Appearances

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Astrum Space · What We Detected in the Strangest Quantum Experiments on Earth · 7 Sep 2026 podcast

Once the energy is greater than the strength of the fruit's connection to the branch, the fruit pops off. voice-verified

This was happening with the light and the electrons. voice-verified

Once the light hit an electron and gave it enough energy to pass the threshold, it broke free from the metal. voice-verified

However, what surprised scientists was that if you increased the intensity of the light, they had expected the electrons to be knocked away faster. voice-verified

If you pulled the fruit off the tree harder, it would come off faster. voice-verified

More energy equals more departing kinetic energy. voice-verified

However, this did not appear to be the case. voice-verified

Instead, increasing the frequency of the light increased the velocity of the departing electrons. voice-verified

The intensity of the light didn't affect the departing electron's velocity at all, but did affect the quantity of electrons being emitted. voice-verified

It was a bit of a puzzler. voice-verified

Albert Einstein was the man who solved the puzzle. voice-verified

He deduced that light must be travelling in little packets of energy, so sending more of them, increasing the frequency, was the only way to increase the energy going to the electrons. voice-verified

He called these packets photons, and later earned a Nobel Prize for his work. voice-verified

Light, it seemed, was more like a particle again. voice-verified

Or both a wave and a particle at once. voice-verified

Of course, even this is not the full picture. voice-verified

To be honest, we aren't completely sure about the full picture even now. voice-verified

Instead, we have more results that are contradictory. voice-verified

Let's go back to the double slit experiment. voice-verified

Armed with the knowledge of photons, physicists once again took a look at the double slit experiment. voice-verified

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