A Bose Einstein condensation, a state predicted by Einstein almost a century ago, is the unique state of matter in which certain types of atoms can exist in temperatures close to absolute zero. The Bose Einstein condensate is one of the simplest systems in nature. The Bose Einstein condensation shows the phenomenon of superfluity and superconductivity.Continue Reading
The Bose Einstein condensate is a gas of atoms so dense and cold that their matter waves lose their individuality and condense into a macroscopic coherent superatom wave. Atomic Bose Einstein condensation very often occurs at a temperature near absolute zero. However, excitons are expected to exhibit the same phenomenon at temperatures that are millions of times higher.
Remarkably, this is a range of temperatures whereat Butov and his team have observed the onset of exciton coherence. Excitons are particles that can be created inside of semiconductors -- in this case, gallium arsenide, the material used to make transistors in cell phones. One can make excitons, or excite them, by shining bright light on a semiconductor. The light kicks electrons out of the atomic orbitals they normally occupy inside of the material. This creates a negatively charged "free" electron and a positively charged "hole."Learn more about States of Matter
Albert Einstein, probably the most influential physicist of the 20th century, published multiple groundbreaking theories in 1905 and won the 1921 Nobel Prize in physics for his explanation of the photoelectric effect. He published his seminal general theory of relativity in 1915.Full Answer >
In its natural state, silver is not magnetic; its atoms have paired electrons that spin in opposite directions, thus causing their magnetic fields to be canceled out, making silver a diamagnetic material.Full Answer >
Plasma is the most common state of matter in the universe. Matter in this state makes up 99 percent of all matter. Most of this plasma is in the form of hydrogen in stars.Full Answer >
At room temperature, neon's state of matter is gas. It is a very rare, inert gaseous element that is found in the noble gases section in group 18 of the periodic table. Neon is represented by the element symbol Ne, and its atomic number is 10.Full Answer >