excited state State of an atom when one of its electrons is in a higher energy orbital than the ground state. Atoms can become excited by absorbing a photon of a specific energy, or by colliding with a nearby atom.
Excited Atom
An atom in which an electron has moved from a lower to higher orbit.
Extinction ...
EXCITED STATE - Any energy state of an atom, or of a solid, above its ground state. For atoms and solids, excited states refers to energy levels of electrons higher than the ground-state energy.
Excited State
A greater-than-minimum energy state of any atom that is achieved when at least one of its electrons resides at a greater-than-normal distance from its parent nucleus.
Exposure ...
Excited stateExcited utteranceExciter
Exciter (album)Exciter (band)Exciter (effect)
Exciter TourExciteraExcitera Innovation Challenge ...
Excited astronomers note that Cassini's results at Jupiter hint at spectacular findings that may await the interplanetary probe when it reaches Saturn.
I'm excited about the contributions I plan on making, but I am also excited about what I will discover along the way. The end goal for me will be to create a great journey and to inspire others to do the same.
The excited gas atoms return rapidly to their original states, each emitting one or more photons in the process.
"We're excited about using this outstanding new telescope to answer some important questions about fundamental physics," he said.
"We were excited to discover these stripes because they might allow us to directly track, for the first time, the origin of the most energetic particles produced in our Galaxy," says Eriksen. "But, we're not claiming victory yet." ...
A slightly excited electron whose spin is aligned with that of the proton will eventualy flip its spin to enter a lower energy state. The energy emitted is very small and equivalent to a wavelength of 21cm.
Copland was excited to be so close at hand to the new post-Impressionistic French music of Ravel, Roussel
Roussel ...
For the first excited state, n=2. Using this in the above equation gives E = -3.40 eV
2 . Use the above expression to find the energy of the released when an electron around a hydrogen atom moves from the 4th to the 2nd level.
self-excited vibration = self-induced vibration. self-induced vibration Vibration of a mechanical system resulting from conversion, within the system, of nonoscillatory excitation to oscillatory excitation. Also called self-excited vibration.
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139. Excited Atom
An atom in which an electron has moved from a lower to higher orbit.
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140. Extinction
The dimming of light by intervening material; commonly, dimming by the interstellar medium.
extremely highly excited atoms are called Rydberg atoms (Rydberg was an early systematizer of atomic spectra). These atoms are huge (the size of viruses for the largest) and fragile but interact very strongly with radiation.
Then he really got excited. "I see the Surveyor! I see the Surveyor! Hey! That's almost as good as being there." ...
The shower that has excited meteor observers over the past few years is the Leonids.
delayed neutrons (NASA SP-7, 1965) Neutrons emitted by excited nuclei in a radioactive process, so called because they are emitted an appreciable time after the fission. Compare prompt neutrons.
Atomic Emission Spectroscopy - This method uses flame excitation; atoms are excited from the heat of the flame to emit light. This method commonly uses a total consumption burner with a round burning outlet.
Sadr (at center), in a complex region of the Milky Way, is surrounded by reddish interstellar clouds that are excited to glow by the ultraviolet light of hot stars, IC 1318 up and to the right.
The ionization balance of a species emitting collisionally-excited lines is set by the local ionizing-radiation field (since the electrons are freed by recombination).
The excited states have very short lifetimes.
Fluorescence, like luminescence, can be produced in a number of ways. Examples are by bombardment with electrons and by absorption of other electromagnetic radiation.
Those at low levels can be excited to higher levels, usually by heat, and after reaching the higher levels they give off light when they return to a lower level.
When the atoms in the gas cloud absorb the light, the electrons will be momentarily excited, but as you know, they don't like to be excited.
The electrons in the atoms of a laser medium are first pumped, or energized, to an excited state by an energy source.
On the Earth the waves are observed only after earthquakes, while on the Sun they are continuously excited, probably by the currents in the convective zone.
In the end they were traced to unusual excited levels of the oxygen atom. In dense oxygen, e.g.
Excited electrons are found in the Earth's atmosphere as a result of the soilar wind. Because of their high energy, these electrons bury themselves into the electrical components of the satellites, "frying" them so that they no longer work correctly.
Gamma rays are essentially very energetic X-RAYS emitted by excited nuclei. They often accompany alpha or beta particles, because a nucleus emitting those particles may be left in an excited (higher-energy) state.
Everyone was excited. We all went out to see what we could see. My Grandma and my girlfriend's family were also interested and we all looked at the Moon and the planets.
These microwave emissions could be generated from water molecules in a planet's atmosphere when they are excited by the infrared light of its host star.
If this cloud can be excited by a nearby source of energy such as hot, young stars or an active galactic nucleus then the electrons in atoms of the gas cloud can get excited. When they de-excite they emit photons of specific frequency and wavelength.
Most noticeable is the red emission from the excited hydrogen and nitrogen, the green emission from doubly-ionized oxygen, and the blue emission from excited helium.
Physicists showed in the 1920s that in gas at extremely low densities, electrons can populate excited metastable energy levels in atoms and ions which at higher densities are rapidly de-excited by collisions.
A parade of other observers took their turns at the eyepiece and we were all excited about testing the ETX's GOTO feature on another object. Next we tried Object -
Solar System -
Jupiter.
In spite of these early ideas, I was nonetheless shocked by their response to the proposal: they were so excited that they jumped out of their seats. College freshmen, no less! Jumping up in excitement about being asked to do extra work.
In both the atomic and molecular cases, the excited states do not persist: after some random amount of time, the atoms and molecules revert back to their original, lower energy state.
The coma is bright both because it reflects sunlight and because its gases are excited by sunlight and emit electromagnetic radiation.
An astronomer with his very own cometary nucleus and some very excited Aberdeen schoolchildren. Image: Dr Francisco DiegoOne of the neatest demonstrations in astronomy is to make a comet in the classroom.
The red colors represent what is known as an emission nebula, where ionized hydrogen (which was excited by energy from nearby young, hot stars) falls back to its unexcited, normal, run of the mill ground state.
The reason the tornado appears multi-colored is because particles at the tip of the jet are more excited than those nearer to the star where they are emanating from.
Four protons are added, one by one, to a carbon nucleus to form a succession of excited (unstable) nuclei of carbon, nitrogen, and oxygen.
This nebula exhibits many of the features we are describing here: the red light comes from hydrogen Balmer emission, excited by the ultraviolet radiation from a hot star embedded in the nebula.
The taking of photographs of the moon then excited much interest among astronomical observers of various countries.
Scientists have been very excited about the information from this probe because they believe it has actually peered back 15 billion years in time! ...
Emission nebula A cloud of glowing gas excited by ultraviolet radiation from hot stars.
Ephemeris (plural ephemerides) A tabulated list of positions for an object calculated from its orbital elements.
This part of the closest star forming region is excited to glow chiefly by a multiple star Trapezium (q1 Orionis). Glowing gas forms distinct filaments and the whole cloud is surrounded by dust. This impressive emmision nebula is approx.
A collection of spaced antennas, dishes, mirrors or lenses that when properly excited in the correct phase, can act in unison with the diffraction-limited beam performance of a single element as large as the extreme dimensions of the array.
Emission Nebula: A cloud of gas that is excited by the ultraviolet radiation from hot stars.
The color produced depends upon which blob of chemical is excited by the electron beam.
The field ionizes the atmosphere above the cloud and causes it to glow red, a color emitted by excited nitrogen atoms, a source confirmed by spectral analysis of the light from the sprites.
Auroras are beautiful undulating sheets of light in the near-polar sky. They are caused by gases that become excited after being hit by solar particles. Most auroras are 100 to 250 km above the ground.
B
Balmer lines (J. Balmer)
Emission or absorption line in the spectrum of hydrogen that arise from transitions between the second (or first excited) state and higher energy states of the hydrogen atom.
Radiation is produced by radioactive decay, nuclear fission and nuclear fusion, chemical reactions, hot objects, and gases excited by electric currents.
Emission spectroscopy uses the range of electromagnetic spectra in which a substance radiates. Hot metals, for example, radiate a continuous spectrum of many (or all) wavelengths, while excited gasses emit various discreet wavelengths, ...
This material is mostly gas that the Sun has caused to boil off the comet's icy nucleus. This gas shines both by reflected sunlight and light emitted by excited molecules. A cometary coma can extend up to a million miles from the nucleus.
everyone started worrying about a press conference scheduled for later that Saturday. Should the suspected moon be announced? But the press already knew. Some papers -- the bigger, more respectable ones -- played it straight; many others ran excited ...
those nacelle caps, it is going to totally change the process, we are very excited about it.
 See also: Light, Energy, Time, Field, Earth
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