Physics
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We summarize the week's scientific breakthroughs every Thursday.
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PhysicsMaxwell’s demon faces the heat
A device inspired by an 1867 thought experiment fails to break the second law of thermodynamics, which governs the flow of heat and the drive toward maximum disorder.
By Andrew Grant -
PhysicsFinal chapter published in decades-long Gravity Probe B project
It took more than 50 years, but an experiment testing general relativity has finally come to a close.
By Andrew Grant -
EarthDon’t flip out: Earth’s magnetic poles aren’t about to switch
Earth’s waning magnetic field is returning to its long-term average, not heading toward a catastrophic magnetic reversal, new lava analysis suggests.
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Planetary ScienceBright minds, antineutrinos and more reader feedback
In the November 28, 2015, issue of Science News, readers discussed humanizing science, frog mating calls, antineurtrinos and Martian dust storms.
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Quantum PhysicsMore tests confirm quantum spookiness
New experimental results confirm and strengthen evidence for the “spooky” reality of quantum physics.
By Andrew Grant -
PhysicsWater droplets spontaneously bounce, sans trampoline
Initially stationary water droplets can bounce on an extremely water-repellent surface as if on a trampoline.
By Andrew Grant -
PhysicsWater droplets spontaneously bounce, sans trampoline
Initially stationary water droplets can bounce on an extremely water-repellent surface as if on a trampoline.
By Andrew Grant -
Science & SocietyQuantum spookiness, magnetic mysteries and more feedback
Letters and comments from readers on quantum spookiness, Earth's magnetic field, and more.
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Particle PhysicsAntiprotons match protons in response to strong nuclear force
The first study of how antiprotons interact with each other reveals yet again that particles of antimatter behave just like their ordinary matter counterparts.
By Andrew Grant -
TechElectronic skin feels the heat, hears the sound
Electronic skin inspired by human fingertips detects texture, pressure, heat and sound.
By Meghan Rosen -
PhysicsAcoustic tractor beam reels in objects like the Death Star
A platform tiled with ultrasound-emitting speakers can get small objects to hover, spin, move around and get reeled in as if pulled by a tractor beam.
By Andrew Grant -
Quantum PhysicsLight mimics hotel with limitless vacancies
By mimicking a mathematician’s method for creating vacancies in a hotel with an infinite number of rooms, physicists may have found a way of increasing the amount of data that can be carried via light.
By Andrew Grant