Impossible Things Physicists Just Made Possible

In the strange world of physics, the impossible is always possible. But in recent times, many scientists have managed to outdo even this caveat and have achieved some spectacular firsts.

Law-Bending Coldness

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In the past, scientists couldn’t cool an object beyond a barrier called the “quantum limit.”[1] To make something frosty, a laser must slow its atoms and their heat-producing vibrations. Ironically, laser light brings warmth to the deal. Despite lowering temperature, it also prevents it from dropping below the quantum limit. Surprisingly, physicists designed a drum of vibrating aluminum and managed to lower its temperature to 360 microKelvin, or 10,000 times more chilled than the depths of space. The drum measured 20 micrometers in diameter (a human hair is 40–50 micrometers), and the experiment defied the famous limit. physics space earth science technology science science physics space earth science technology science science physics space earth science technology science science physics space earth science technology science science

Once thought to be impossible, the breakthrough was a novel laser technique that can “squeeze” light, directing the particles with a more intense stability in one direction. This removed the laser’s fluctuations that added heat. The drum is the most frigid mechanical object ever recorded but not the coldest matter, which is a Bose-Einstein condensate. Even so, the achievement could one day play a part in superfast electronics and help unravel the stranger behaviors of the quantum world that appear when materials approach their physical limits. physics space earth science technology science science physics space earth science technology science science physics space earth science technology science science physics space earth science technology science science

The Brightest Light

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The radiance of our own Sun is already noteworthy. Now, imagine the combined light of a billion Suns. That’s about the equivalent of what physicists recently brought to life in a lab. Officially the brightest luminosity ever seen on Earth, the light also behaved in an unexpected manner. It changed objects’ appearances. physics space earth science technology science science physics space earth science technology science science physics space earth science technology science science physics space earth science technology science science

To understand this, one must look at how sight works. Photons need to scatter from electrons before vision becomes possible. Under normal circumstances, electrons bump one photon at a time. When something turns brighter, the shape usually remains the same as in lower light. The powerful laser used in the experiment scattered a jaw-dropping 1,000 photons. Since scattering equals visibility, the intensity at which it occurred changed the way the photons behaved and consequently how an illuminated object is perceived. This strange effect became more obvious when the super-sunlight got stronger. Because the photons’ normal energy and direction were altered, light and colors were produced in unusual ways. SHOW MORE….