Sentences with phrase «ordinary atoms»
The phrase "ordinary atoms" refers to the regular, common atoms that make up everything around us. These atoms are not unique or special, but rather the basic building blocks of all matter. Full definition
A «giant atom» can be created, filled with ordinary atoms.
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Whereas «up» and «down» quarks instantly condense to form protons and neutrons, the addition of «strange» quarks makes a stable nugget that can grow far more massive than the nuclei of ordinary atoms, Witten proposed in 1984.
23 STRANGE MATTER Ordinary atoms contain particles called quarks, which come in two varieties: up and down.
«We should hopefully be able to make a prediction for the masses of neutrinos [ghostly particles that interact weakly with ordinary atoms] based on which masses are most commonly found in different bubbles,» he says.
A team of physicists has succeeded in producing rudimentary atoms of antimatter and holding on to them for several minutes, an advance that holds hope for detailed comparisons of how ordinary atoms of matter compare with their exotic antimatter counterparts.
The Cryogenic Dark Matter Search (CDMS), buried half a mile deep in an old Minnesota iron mine to shield it from cosmic rays, searches for collisions between dark - matter particles called WIMPS and ordinary atoms in 19 hockey - puck - size hunks of germanium.
The scientists found that the force between antiproton pairs is attractive, just like the strong nuclear force that holds ordinary atoms together.
Theory predicted that if antiprotons orbited the nuclei of ordinary atoms, the antiprotons would leave their orbits within a trillionth of a second.
The leading theoretical candidates are weakly interacting massive particles, or WIMPs, which should occasionally collide with ordinary atoms and create a telltale signal.
Matter (both ordinary atoms and the invisible stuff called dark matter) once dominated the universe, but today it constitutes only a quarter of the content of the cosmos.
In abandoned mines in Minnesota and Ontario, researchers have built WIMP detectors designed to pick up the weak response when a dark particle strikes an ordinary atom.
The Big Bang theory makes detailed predictions about the total number of ordinary atoms and about the relative abundance of deuterium (heavy hydrogen) and helium in the universe.
Theoretical models of the Big Bang indicate that most of this matter can not consist of ordinary atoms.
Ordinary atoms are easily agitated by radiation, so they would take too long to settle into the observed structures.
In fact, the latest survey of the Big Bang's residual light suggests that more than 84 percent of the matter in the cosmos is of the «dark» variety: exotic particles unlike the ordinary atoms that make up our everyday world and the objects therein.
However, according to Chris Kouvaris, if dark matter is light, it could actually interact strongly with ordinary atoms, losing energy on the way to the detector, and this can make deep site detectors unable to catch it.
These particles, if they exist, do not generally associate with ordinary atoms, but they occasionally collide anyway, producing some secondary effects.
What if they actually interact strongly enough with ordinary atoms, that, as they cross the surface of Earth and travel underground, lose enough energy to become undetectable?
Ordinary atoms can only form a BEC when cooled gradually to within a fraction of a degree of absolute zero.
In present - day estimates of the universe's makeup, ordinary atoms (such as those we detect as the visible universe) contribute only about 5 percent; the bulk of the cosmos takes the form of so - called dark energy, under whose influence the universe is expanding at an increasing clip.
The team have made antihydrogen by replacing the proton nucleus of the ordinary atom by an antiproton, while the electron has been substituted by a positron.
When the antiprotons are close together, the strong force interaction overcomes the tendency of the like (negatively) charged particles to repel one another in the same way it allows positively charged protons to bind to one another within the nuclei of ordinary atoms.
«We know nature gives us ordinary atoms, we wondered if it could do it again,» he says.
Ordinary atoms can change their energy levels under the right conditions by either absorbing or emitting a photon.