You’re looking at a real photograph of a single atom — something once thought impossible to see.

You’re looking at a real photograph of a single atom — something once thought impossible to see. In 2012, physicist David Nadlinger captured an image of a single strontium atom at the University of Oxford. The tiny glowing dot in the picture is one isolated atom suspended in space, made visible using advanced atomic physics and precision optics. The atom was trapped using electromagnetic fields inside an ion trap and illuminated with blue laser light. When the laser hit the positively charged strontium ion, it absorbed and re-emitted photons, creating a visible fluorescence glow. That glow is what the camera captured, turning quantum mechanics into something the human eye can actually see. Atoms are about 0.1 nanometers in size — far smaller than visible light — yet this breakthrough in laser cooling, spectroscopy, and quantum physics allowed scientists to photograph one directly.

Видео You’re looking at a real photograph of a single atom — something once thought impossible to see. канала EXPLOR