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The story
A UCLA research team has announced the first-ever room-temperature (about 27°C) observation of “quantum heat waves” — heat traveling in a straight line like a beam of light, defying the everyday assumption that heat simply spreads out in every direction. The experiment revealed a “star-shaped” temperature pattern, with thin ray-like trails of heat extending from the heating point in six directions across the crystal. On 5ch’s Science News+ board, users debated the nature of phonons — the particles that carry heat — their relationship to Bose statistics, and possible applications in semiconductors and room-temperature quantum computers.
First room-temperature observation of heat traveling in a straight line, like light, as a “quantum wave”
Research conducted at the University of California, Los Angeles (UCLA) has achieved the first-ever room-temperature observation of “heat that propagates as a quantum wave” (a quantum heat wave).
Heat is commonly understood to spread out gradually in every direction, but this experiment confirmed a phenomenon in which it instead travels dead straight, like a beam of light.
Source: nazology.kusuguru.co.jp / Original article here
What people said
Armed with the power of the devil
A hero of justice
Devilman, Devilman
(riffing on the theme song from the anime Devilman)
And if it does tie in, then since the electromagnetic field strength given off by human body heat is a fixed value, that would settle this 100%!
>>When you film an ordinary material with this camera, the heat just spreads out in a plain circle around the heating point.
>>But from that single heated point, a "star-shaped" temperature pattern emerged, with six thin rays extending perfectly straight.
>>Rather than spreading in a circle, the heat concentrated intensely along six directions dictated by the crystal, traveling the whole way as a straight wave.
>>That's the moment a quantum heat wave — supposedly the exclusive domain of extreme cold — was confirmed to actually happen at room temperature, around 27°C.
Phonon is just a quantum of sound, an everyday physics term — what was the Japanese translation for it again?
Radioactivity (thermal neutron energy) works the same way.
that's just a sound wave; of course it travels straight normally, even in a solid at room temperature, albeit with some scattering along the way.
"…a resident of the quantum world." —
the one that's actually a resident of the quantum world is the phonon, which has particle-like properties — do they even know where the word "phonon" comes from?
Does "travels straight even when it hits an object" mean a laser wider than a single atom still passes straight through?
If an atom is the size of a period "." and the laser is the size of a circle "●", then even if it hits the atom, it envelops and passes through it, so it goes straight.
But flip that around —
if the atom is the size of "●" and the laser is the size of ".", then wouldn't the laser bounce off in a different direction the instant it collides with the atom?
"…wouldn't the laser field bounce off in a different direction?"
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"…wouldn't the laser bounce off in a different direction?" (fixing a typo in my post above)
If anyone here knows just how small the minimum unit of a photon actually is, that would settle whether this experiment is even possible.
The interference fringes stayed robust even at high temperature. Even heated to 900K (about 627°C), the second-order>> bright fringes are still clearly observed. Under the Einstein model the fringes should vanish completely at 900K, so their survival at this high temperature can only be an effect of correlated vibrations.
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>>The interference fringes stayed robust even at high temperature. Even heated to 900K (about 627°C), the second-order bright fringes are still clearly observed. Under the Einstein model the fringes should vanish completely at 900K, so their survival at this high temperature can only be an effect of correlated vibrations. (fixing a stray ">>" in the quote above)
Background and Key Points
Phonons — the quantized vibrations that carry heat through a solid — are not exotic new physics; the term itself is just a transliteration into Japanese (フォノン, “phonon,” from the Greek for sound), which is what one poster (#20) was really asking about when he wondered what the “Japanese translation” was and got the implicit answer: there isn’t one, because it’s borrowed English/Greek, not a domestic coinage. That trivia matters because it signals how the thread’s skeptics see the story — as familiar phonon physics repackaged with buzzwords like “quantum wave” for a press release. Directional, anisotropic heat conduction along crystal axes and reduced phonon scattering (the isotopically pure carbon-12 diamond example in #21) have been documented for decades; what’s new here is specifically achieving and imaging ballistic, wave-like phonon transport at room temperature (~27°C) rather than near absolute zero, with interference fringes reportedly surviving up to 900K (#41).
The thread’s real split isn’t science-denial versus belief — it’s between posters treating this as an incremental, technically impressive extension of known phonon/interference physics, and posters (or the source article’s framing) treating “heat traveling like a laser” as a novel, almost magical phenomenon. A side argument (#19, #33, #37) about whether electromagnetic fields could be photographed the same way conflates photon wavelength/beam width with atomic scale, and never gets resolved.
What the thread never engages with: why this matters practically — potential for direction-specific heat dissipation in semiconductor chips or thermal management in room-temperature quantum computing hardware — the application angle the original article raised but posters largely ignored in favor of terminology nitpicking.
*This article is compiled as excerpts and a summary from the 5ch (Science News+) thread “[Nazology] First room-temperature observation of heat traveling in a straight line, like light, as a “quantum wave”.”
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