Found a new way to measure gravity using pairs of atoms
Researchers used differences in pairs of atoms suspended in air to accurately measure gravity.
Currently, standard gravity experiments involve dropping objects in shielded tubes for measurements with special instruments. Although this method is effective, but it provides only short-term observation of gravitational interactions, and may be affected by external magnetic fields.
Recently, a team of physicists from the University of California at Berkeley found a new way to measure. Its essence lies in the fact that a cloud of cesium atoms is released into the airspace of a small chamber, and then, using laser pulses, they are cooled and divided into several pairs in a state of quantum superposition. Further, lasers are used to fix particles in space, so that one of the atoms of each pair is much higher than its satellite..
After that, scientists measure the wave duality of each atom. Knowing the difference in their distances from the Earth, you can accurately determine the value of gravity.
This method allows for long-term studies due to the immobility of atoms. In addition, it can be used to determine the force of attraction between various objects, and the device itself is easier to protect against interference from random magnetic fields..
In the future, this method will make it possible to create compact instruments for measuring the force of gravity. It also offers scientists new tools to determine the nature of dark matter and test other physical ideas..
NASA’s Quantum Sensor Is Using Atoms To Measure Earth’s Gravity, Here’s How
Recall that recently scientists have also discovered a new stable form of plutonium that can serve as a transition phase for storing radioactive waste.
text: Ilya Bauer, photo: University of California