What would make
an atom absorb energy in the first place?
Not exact matches
According to quantum mechanics, an
atom can only
absorb a photon of particular
energies and colors as the electron within the
atom hops from a lower
energy state to a higher
energy state.
Fischbach has an idea about how neutrinos might alter the
energy levels in
atoms and monkey around with the way they decay even without being
absorbed — a decidedly unconventional view.
Electrons within
atoms absorb light of a specific wavelength by jumping from one
energy level to a higher one.
This material, in which carbon substitutes for some of the lattice oxygen
atoms,
absorbs light at wavelengths below 535 nanometers and has a lower band - gap
energy than rutile (2.32 versus 3.00 electron volts).
Scientists at the Department of
Energy's Oak Ridge National Laboratory have developed a new oxygen «sponge» that can easily
absorb or shed oxygen
atoms at low temperatures.
Instead of being knocked out, when an electron tightly bound to a neon
atom absorbs the lower
energy photon, it becomes loosely bound, causing the
atom to become «excited».
If a laser is tuned to the correct frequency,
atoms will
absorb its light and later re-emit the
absorbed energy at a higher frequency.
The rules of quantum mechanics give
atoms discrete ways to
absorb energy in collisions or lose it to photons.
This material, called stripe - type - lambda - trititanium - pentoxide, is composed of only titanium
atoms and oxygen
atoms, and can
absorb and release a large amount of heat
energy (230 kJ L - 1).
Each laser generates two frequencies of light, which are tuned until the
atoms oscillate between two
energy states and stop
absorbing light.
I understand that electrons in the
atoms in the wall
absorb the light, but how does that
absorbed sunlight turn into thermal
energy?
Some of those
atoms vibrate sufficiently vigorously that their vibrational
energy is roughly equal to the electronic
energy (photons)
absorbed from the sun — in essence, they are in resonance with the solar
energy.
This is usually a particle of light, but the
atom in the Chalmers experiment is instead designed to both emit and
absorb energy in the form of sound.
Atoms can be cooled using lasers because light particles from the laser beam are absorbed and re-emitted by the atoms, causing them to lose some of their kinetic en
Atoms can be cooled using lasers because light particles from the laser beam are
absorbed and re-emitted by the
atoms, causing them to lose some of their kinetic en
atoms, causing them to lose some of their kinetic
energy.
Once the excited electrons
absorb enough
energy to jump free from the silicon
atoms, they can flow independently through the material to produce electricity.
An
atom can
absorb a photon, or light particle, by boosting one of its electrons to a higher
energy, but it's unstable in this state.
In a traditional solar panel, silicon
atoms are struck by sunlight and the
atoms» outermost electrons
absorb energy from some of these wavelengths of sunlight, causing the electrons to get excited.
«The job of the photoanode is to
absorb sunlight and then use that
energy to oxidize water — essentially splitting apart the H2O molecule and rearranging the
atoms to form a fuel.
Peering through a viewport, I watch as a blob of
atoms absorbs photons of laser light and re-emits them at slightly higher
energies, losing a bit of heat each time.
Part of the kinetic
energy of the swirling molecular ions is
absorbed by the helium
atoms in collisions, and these
atoms in turn transfer it to the rotational motion of the ions, thus raising their rotational temperature.
Ordinary
atoms can change their
energy levels under the right conditions by either
absorbing or emitting a photon.
Their subatomic particles collide, and the iron
atoms» nuclei split, leaving behind helium nuclei plus a few leftover neutrons and
absorbing a lot of
energy in the process.
As hydrogen
atoms move about in space, they can
absorb small amounts of
energy, sending the
atom's single electron to a higher
energy state.
(1 MeV = 1.602 × 10 - 6 erg) A hydrogen
atom (1H) that
absorbs a fast neutron releases 2.225 MeV of binding
energy and becomes deuterium.
That incoming light is
absorbed by hydrogen
atoms and converted to heat
energy, NASA stated, and this steady conversion of light - to - heat makes the planet appear to be pitch - black to onlookers, the researchers found.
Another reason it takes so long is because iron
atoms in the sun's interior
absorb — and hold — some of the
energy that passes by them.
When
atoms absorb another form of
energy, which can be in the form of heat or another EMF.
We, too, are made up of
atoms that are always emitting and
absorbing light and
energy.
Vibrational modes in molecules with three or more
atoms (H2O, CO2, O3, N2O, CH4, CFCs, HFCs...) include bending motions that are easier to excite and so will
absorb and emit lower
energy photons which co-incide with the infrared radiation that the Earth emits.
Photons of sufficient
energy are
absorbed by oxygen molecules and as a result the
atoms of the oxygen are «blown» apart.
In this case, the electrons will
absorb the
energy of the light wave and increase their
energy state, often moving outward from the nucleus of the
atom into an outer shell or orbital.
But to make some sense of your longer distance, I suppose that little bits of C02, warmed by
absorbing outgoing IR, thermalize that
energy to adjacent
atoms, then rise to get the longer distance.
If the photon's frequency and
energy is different by even a little, the
atom can not
absorb it (this is the basis of quantum theory).
When ozone
absorbs ultraviolet light, it splits into O2 and oxygen
atoms and also releases heat
energy.
Some might argue that the term «re-radiate» should be reserved for cases where a molecule or
atom absorbs a photon of a given
energy, and later emits a photon of the same
energy, as the excited state returns to normalcy.
Fortunately, as depicted in Figure 2 (orange «thermal down surface» arrow), some of this
energy does stay in the atmosphere, where it is sent back toward Earth by clouds, released by clouds as they condense to form rain or snow, or
absorbed by atmospheric gases composed of three or more
atoms, such as water vapor (H2O), carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4).
The actual resonant frequencies of resonant molecules is affected by pressure; this means more collisions between
atoms, and sometimes vibrational
energy can be
absorbed in a collision while sometimes
energy is given off.
However, my main point was not so much about the «make up» of ozone but more about the possibility that as long as oxygen
atoms and molecules
absorb enough
energy from UV radiation to alter their structure it may be that they also produce an increase in their heat content, which should be greater at any points nearest to the source — i.e..
When that photon hits an
atom, that
energy can be
absorbed.
If the
atom absorbs that photon, the
atom will have more
energy than before.
That
energy is thermalised when it is
absorbed by an
atom or molecule on the earth and raises its temperature.