Not exact matches
New evidence comes out to modify the structure of the
atom (from a spherical particle to one of a nucleus and
electrons orbiting it).
The
atom had a nucleus with
electrons orbiting around it.
If one could imagine the
electron to cease
orbiting then the hydrogen
atom ceases to exist.
Lest he be misunderstood, he says that panpsychism does not for once question the real existence of such entities as
atoms or
electrons but merely insists that such individuals must «feel» and «will» He does not shrink from the view that
electrons «enjoy» their existence and deliberately alter their
orbits in order to obtain vivid contrasts and thus avoid being bored.30
The history of science provides many examples of this combination of analogy and innovation in the creation of models which were useful in generating theories.4 The «Bohr model» of the
atom, in which «planetary»
electrons revolve in
orbits around a central nucleus, resembles the solar system in certain of its dynamical properties; but the key assumption of quantum jumps between
orbits had no classical parallel at all.
For those who enjoy chemistry: Free radicals are an unpaired
electron in
orbit around the nucleus of an
atom.
They show the beauty of the
atom, including its
orbiting electrons in the colors of red, orange, and light green.
These protons yank negatively charged
electrons from their
orbits around
atoms within molecules.
These rules predict, for example, how
electrons orbit a nucleus in an
atom, and how an
atom can absorb photons, particles of light.
The idea that massive stars will have a considerable effect on their surroundings is not new: such stars are known to blast out vast quantities of powerful, ionising radiation — emission with enough energy to strip
atoms of their
orbiting electrons.
They shoot
atoms, each with a widely
orbiting electron, through a photon stream, and then measure how much the photons knock the
electrons out of phase.
All light comes from the same physical process: An
electron circling the nucleus of an
atom in its customary
orbit is energized — often by heat — and moves into a higher
orbit.
But unlike household magnets, quantum mechanics dictates that two
electrons circling a nucleus in the same
orbit of an
atom must be either completely aligned or completely misaligned; there is no in - between.
Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon,
electron, or helium nucleus) carries enough energy to ionize an
atom or molecule (that is, to completely remove an
electron from its
orbit).
The large
orbit of the loosely bound outer
electron of cesium
atoms would repel the negative charge of the helium
atom — overcoming the van der Waals forces that normally help spread superfluid helium over a surface.
The
atom is a helium nucleus
orbited by an
electron and an antiproton rather than two
electrons.
It's the result of a particular magnetic property of materials — the magnetic moment, a tiny magnetic field produced by
electrons orbiting the nucleus of an
atom.
Electrons occupy different
orbits around their
atom and, by analogy, spin like Earth.
Each molecule consists of
atoms and each
atom has an atomic nucleus and,
orbiting around the nucleus we have
electrons.
One of the most ubiquitous is the «octet rule,» which states that each
atom in a molecule that is produced by a chemical reaction will have eight outer
orbiting electrons.
Atoms can be thought of as miniature solar systems, with a nucleus at the centre and
electrons orbiting at certain specific distances from it.
An
electron orbits a hydrogen
atom in about 150 attoseconds.
This turned them into Rydberg
atoms, in which the
electrons are in high - energy states and so
orbit further away from the positively - charged nucleus.
Nineteen
electrons orbit around the nucleus of a potassium
atom.
All the elements in the periodic table consist of
atoms with a nucleus of positively charged protons,
orbited by the same number of negatively charged
electrons.
«Ever since the beginning of quantum mechanics people have been looking for a configuration which could explain the stability of
atoms and why
orbiting electrons do not radiate,» Dr Miroshnichenko said.
Phosphorus - doped silicon is a promising medium for spintronics because each phosphorus
atom «donates» an extra
electron that
orbits rather freely and hence is open to manipulation in the silicon crystal.
Caesium
atoms contain
electrons that
orbit a nucleus, and it is possible for the direction of an
electron's spin to become entangled with that of the nucleus's spin.
These temporary adhesive forces happen because
electrons orbiting the nuclei of
atoms are not evenly spaced, creating a slight electrical charge.
Lead scientist Professor Tim Gershon, from The University of Warwick's Department of Physics, explains: «Gravity describes the universe on a large scale from galaxies to Newton's falling apple, whilst the electromagnetic interaction is responsible for binding molecules together and also for holding
electrons in
orbit around an
atom's nucleus.
Spin
orbit coupling is a quantum mechanical phenomenon that results from the interaction between the
electron's orbital motion in
atoms and its spin orientation.
Most of the harmful radiations are «ionizing radiations» — they have sufficient energy to remove
electrons from the
orbits of surrounding
atoms, causing them to become charged, or «ionized.»
Therefore the
electron does not only
orbit its own atomic nucleus, numerous other
atoms lie inside its
orbit too.
If the
electron orbits the nucleus at a great distance, there is plenty of space in between for other
atoms.
The perplexing thing about this
atom: the radius of the
orbit, on which the
electron moves around the nucleus, is much larger than the typical distance between two
atoms in the condensate.
Rydberg
atoms are
atoms, in which one single
electron is lifted into a highly excited state and
orbits the nucleus at a very large distance.
The levitation trick works because giant magnetic fields slightly distort the
orbits of
electrons in the frog's
atoms.
The team used a novel technique that involves replacing the
electrons in hydrogen
atoms with negatively charged particles called muons, and then measuring subtle shifts in the energy that is required to bump a muon into a higher - energy
orbit around the single - proton nucleus.
In Rydberg
atoms, one or more
electrons are excited with a precise amount of energy so that they
orbit far from the
atom's nucleus.
Prior attempts to measure the proton's g - factor were not precise as they were restricted to probing protons in
atoms, where
orbiting electrons disguise the proton's properties.
Some half truths here, an
atom of elemental silver is completely transformed into a silver ion when it loses one orbital
electron, leaving 46
electrons in
orbit instead of the 47
electrons found in an
atom of silver.
With his daydreaming and his dyslexia, he has never been a good student, and the purpose of the
electron shell — the
orbit of
electrons around an
atom's nucleus — escapes him.
But on a small scale, such as inside an
atom, the space is so small that there is no main path, no «
orbit»; there are all sorts of ways the
electron could go, each with an amplitude.
The Bohr model of the hydrogen
atom: a dense nucleus containing the hydrogen
atom's single proton (and possibly one or more neutrons), surrounded by an
electron that can be on one of several different
orbits.
The models can be viewed in either the traditional Bohr model, which shows an
atom with a central nucleus with
electrons in
orbit around it, or with the quantum mechanical model, which shows off the
atom as an
electron cloud.