Physics

A single fiber actuator inspired by human muscles

A single fiber actuator inspired by human muscles

Assembly of 100 strands of artificial muscle fiber bundle structure on a glass slide. Credit: Kim et al. To effectively replicate the movements of humans and animals, robots must incorporate muscle-like structures. These artificial muscles must achieve optimal performance for all relevant actuation parameters, including energy density, tension, stress and mechanical resistance. Researchers from KAIST …

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It may be one of the building blocks of all matter, but we still have a lot to learn about the proton

It may be one of the building blocks of all matter, but we still have a lot to learn about the proton

A proton should be one of the simplest objects in physics. It is a basic building block of all atoms, or, alternatively, the simplest atom possible on its own, since hydrogen (a positively charged proton plus a negatively charged electron) is always hydrogen when ionized. Most atoms in the Universe are hydrogen, as are most …

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New space observatory helps solve mystery involving huge black holes

New space observatory helps solve mystery involving huge black holes

Most galaxies are built around huge black holes.— Reuters WASHINGTON: Most galaxies are built around huge black holes. While many of them are relatively docile, like the one at the center of our Milky Way, some are fierce surrounding materials and unleash huge, bright jets of high-energy particles far out into space. Using data from …

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Physicists strike gold and solve 50-year-old lightning mystery

Physicists strike gold and solve 50-year-old lightning mystery

Did you know: lightning can strike the same place several times? For example, the Empire State Building would be struck by lightning approximately 23 times per year. Credit: Pixabay/CC0 Public domain The odds of being struck by lightning are less than one in a million, but those odds dropped dramatically this month when more than …

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Two black holes met by chance and created something never seen before

Two black holes met by chance and created something never seen before

The ripples in spacetime generated by colliding black holes have taught us a lot about these enigmatic objects. These gravitational waves encode information about black holes: their masses, the shape of their internal spiral towards each other, their spins and their orientations. From there, the scientists established that most of the collisions we’ve seen have …

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Mathematical theorem used to crack US government encryption algorithm

Mathematical theorem used to crack US government encryption algorithm

Credit: public domain CC0 In the digital age and the move towards quantum computing, protecting data from hacking attacks is one of our biggest challenges, and one that experts, governments and industries around the world whole are trying to answer. While this is an effort to build a more connected and secure future, it can …

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Max Planck and how the spectacular birth of quantum physics changed the world

Max Planck and how the spectacular birth of quantum physics changed the world

This is the first in a series of articles exploring the birth of quantum physics. We now live in the digital age. The landscape of technological wonders that surrounds us is something we owe to a hundred physicists who, at the dawn of the 20e century, were trying to figure out how atoms worked. They …

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