Spontaneous Photon Emission - Revision history

Delaney.mcg at 17:58, 29 April 2022

2022-04-29T17:58:37Z

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	The collection of photon emissions for an atom's transition from a higher to a lower state is called an emission spectrum. For any given atom in an excited state, there typically exists a wide range of potential photon emissions, and these emissions vary greatly between different elements. The capture of these photon emission patterns with diffraction gradient apparatuses is call spectroscopy.		The collection of photon emissions for an atom's transition from a higher to a lower state is called an emission spectrum. For any given atom in an excited state, there typically exists a wide range of potential photon emissions, and these emissions vary greatly between different elements. The capture of these photon emission patterns with diffraction gradient apparatuses is call spectroscopy.

	Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.		Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.
	[[File:~~astronomy_spectral_lines~~.~~png~~]]		[[File:astronomy_spectral_lines2.jpg]]

			Above is a representation of the process by which spectral lines appear by the time light travels through space and reaches observers.

	[[File:HEM.png]]		[[File:HEM.png]]

Delaney.mcg at 17:52, 29 April 2022

2022-04-29T17:52:24Z

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	==Connectedness==		==Connectedness==
	The primary use of spontaneous photon emission in industry is in the creation of products that center around the emission of light, such as fluorescent lights, light emitting diodes, and plasma TV screens. This process allows for the production of photons through the energizing of atoms, and can be extremely helpful for creating controlled light sources.		The primary use of spontaneous photon emission in industry is in the creation of products that center around the emission of light, such as fluorescent lights, light emitting diodes, and plasma TV screens. This process allows for the production of photons through the energizing of atoms, and can be extremely helpful for creating controlled light sources.

			Ultraweak spontaneous photon emission is currently being used in the development of a breast cancer detecting technique that has shown promise in trials on mice. To do so, scientists analyze the ultra weak photon emission from either sides of the mice's' bodies and compares the ratio. Using cluster analysis, they have been able to successfully detect human breast cancer, especially in the early stages.

			Fun Fact about ultraweak spontaneous photon emission:
			Ultraweak spontaneous photon emission is the spontaneous photon emission that the atoms of your body undergoes! The light that results is more than 1000 time weaker than the sensitivity of the naked eye, but you are quite literally glowing. The energy for this emission comes from the energy our bodies use for metabolism. Now you know!

	==History==		==History==
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	==References==		==References==
			https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2707605/

			https://www.sciencedirect.com/science/article/abs/pii/S1011134416310211#:~:text=Spontaneous%20ultra%2Dweak%20photon%20emission,2%5D%2C%20%5B3%5D.

	"Emission Spectrum." <i>Wikipedia</i>. Wikimedia Foundation, 29 Nov. 2015. Web. 05 Dec. 2015.		"Emission Spectrum." <i>Wikipedia</i>. Wikimedia Foundation, 29 Nov. 2015. Web. 05 Dec. 2015.

Delaney.mcg at 16:36, 29 April 2022

2022-04-29T16:36:09Z

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	Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.		Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.
	[[File:astronomy_spectral_lines.png~~\|200px\|thumb\|left\|alt text~~]]		[[File:astronomy_spectral_lines.png]]

	[[File:HEM.png]]		[[File:HEM.png]]

Delaney.mcg at 16:34, 29 April 2022

2022-04-29T16:34:08Z

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	Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.		Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.
	[[File: astronomy_spectral_lines.~~jpg~~]]		[[File:astronomy_spectral_lines.png\|200px\|thumb\|left\|alt text]]

	[[File:HEM.png]]		[[File:HEM.png]]

Delaney.mcg at 16:32, 29 April 2022

2022-04-29T16:32:53Z

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	In accordance with the law of conservation of energy, if we chose a system that includes both the photon and the atom, this process will feature no net energy change.		In accordance with the law of conservation of energy, if we chose a system that includes both the photon and the atom, this process will feature no net energy change.
	The collection of photon emissions for an atom's transition from a higher to a lower state is called an emission spectrum. For any given atom in an excited state, there typically exists a wide range of potential photon emissions, and these emissions vary greatly between different elements. The capture of these photon emission patterns with diffraction gradient apparatuses is call spectroscopy. Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.		The collection of photon emissions for an atom's transition from a higher to a lower state is called an emission spectrum. For any given atom in an excited state, there typically exists a wide range of potential photon emissions, and these emissions vary greatly between different elements. The capture of these photon emission patterns with diffraction gradient apparatuses is call spectroscopy.

			Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.
			[[File: astronomy_spectral_lines.jpg]]

	[[File:HEM.png]]		[[File:HEM.png]]
	[[File:Krypton Spectrum.jpg]]		[[File:Krypton Spectrum.jpg]]

	Above you'll see the emissions spectrums for hydrogen and krypton respectively. As you can see, krypton has a much wider range of potential photon emissions, largely because its atoms are far more complex than those of a more simple element like hydrogen.		Above you'll see the emissions spectrums for hydrogen and krypton respectively. As you can see, krypton has a much wider range of potential photon emissions, largely because its atoms are far more complex than those of a more simple element like hydrogen.

Delaney.mcg: /* A Computational Model */

2022-04-29T16:29:00Z

A Computational Model

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	[[File:Spontaeous_photon_emission_phet.png]]		[[File:Spontaeous_photon_emission_phet.png]]
	<https://www.https://phet.colorado.edu/en/simulations/lasers>		<https://www.https://phet.colorado.edu/en/simulations/lasers>

			The above simulation from Physics Education Technology demonstrates the use of spontaneous photon emission in the starting of laser technology.

			The number and distance between energy levels can be manipulated to observe their effect on the protons emitted and vice versa. The photon emitter power can be manipulated to observe the effect on the electron's energy (a display of stimulated photon emission)

	==Examples==		==Examples==

Delaney.mcg at 16:19, 29 April 2022

2022-04-29T16:19:05Z

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	[[File:Spontaeous_photon_emission_phet.png]]		[[File:Spontaeous_photon_emission_phet.png]]
			<https://www.https://phet.colorado.edu/en/simulations/lasers>
	==Examples==		==Examples==

Delaney.mcg at 16:15, 29 April 2022

2022-04-29T16:15:10Z

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	===A Computational Model===		===A Computational Model===

	~~How do we visualize or predict using this topic. Consider embedding some vpython code here~~ [~~https~~:~~//trinket~~.~~io/glowscript/31d0f9ad9e Teach hands-on with GlowScript~~]		[[File:Spontaeous_photon_emission_phet.png]]

	==Examples==		==Examples==

Delaney.mcg at 16:04, 29 April 2022

2022-04-29T16:04:54Z

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	==The Main Idea==		==The Main Idea==
			Spontaneous photon emission is a great example of the need for quantum theory. Because electron states used to characterize atoms are formally considered stationary states (time independent), we must find an explanation for why this time dependent behavior occurs. Quantum behavior explains this by taking into account the interactions of photons and electrons, in where the initial state of an atomic electron is just an electron but the final state of the system can be an electron and proton. There are currently no quantum models to describe this, but because of our current understanding of quantum theory, we know it does not violate our currently understanding of quantum behavior.

	If an atom is in an excited state, its current energy level is higher than the minimum energy level, or ground state (n=1). In this state, it is possible for it to undergo the process of spontaneous photon emission, decreasing its energy level to one closer to the ground state (n-1). During this process, the atom will emit a photon with energy equal to the difference in energy between its starting and ending energy levels.		If an atom is in an excited state, its current energy level is higher than the minimum energy level, or ground state (n=1). In this state, it is possible for it to undergo the process of spontaneous photon emission, decreasing its energy level to one closer to the ground state (n-1). During this process, the atom will emit a photon with energy equal to the difference in energy between its starting and ending energy levels.
	[[File:Spontaneousemission.png]]		[[File:Spontaneousemission.png]]

Delaney.mcg at 17:09, 24 April 2022

2022-04-24T17:09:27Z

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	Claimed by Delaney McGowan Spring 2022		Claimed by Delaney McGowan Spring 2022

	Spontaneous photon emission is a ~~process~~ that occurs when an atom or other quantum system decreases its energy level and releases a photon. This process is referred to as spontaneous because the atoms decrease in energy level is caused by a loss of energy that occurs simply due to time. This process should not be confused with stimulated photon emission, a process that must be incited with the absorption of other particles. This release of a photon results in the production of light, ~~and~~ has been instrumental in many inventions, such as fluorescent lights, television displays and light emitting diodes. Most notable, ~~laser~~ use spontaneous photon emission to start up, and stimulated photon emission to continue running.		Spontaneous photon emission is a quantum effect that occurs when an atom or other quantum system decreases its energy level and releases a photon in a random direction. This process is referred to as spontaneous because the atoms decrease in energy level is caused by a loss of energy that occurs simply due to time. This process should not be confused with stimulated photon emission, a process that must be incited with the absorption of other particles. This release of a photon results in the production of light, referred to as luminescence. Luminescence has been instrumental in many inventions, such as fluorescent lights, television displays and light emitting diodes. Most notable, lasers use spontaneous photon emission to start up, and stimulated photon emission to continue running.


	==The Main Idea==		==The Main Idea==
	If an atom is in an excited state, its current energy level is higher than the minimum energy level, or ground state (n=1). In this state, it is possible for it to undergo the process of spontaneous photon emission, decreasing its energy level to one closer to the ground state (n-1). During this process, the atom will emit a photon with energy equal to the difference in energy between ~~the two~~ energy levels.		If an atom is in an excited state, its current energy level is higher than the minimum energy level, or ground state (n=1). In this state, it is possible for it to undergo the process of spontaneous photon emission, decreasing its energy level to one closer to the ground state (n-1). During this process, the atom will emit a photon with energy equal to the difference in energy between its starting and ending energy levels.
	[[File:Spontaneousemission.png]]		[[File:Spontaneousemission.png]]

	In accordance with the law of conservation of energy, if we chose a system that includes both the photon and the atom, this process will feature no net energy change.		In accordance with the law of conservation of energy, if we chose a system that includes both the photon and the atom, this process will feature no net energy change.
	The collection of photon emissions for an atom's transition from a higher to a lower state is called an emission spectrum. For any given atom in an excited state, there typically exists a wide range of potential photon emissions, and these emissions vary greatly between different elements. The capture of these photon emission patterns with diffraction gradient apparatuses is call spectroscopy. Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.		The collection of photon emissions for an atom's transition from a higher to a lower state is called an emission spectrum. For any given atom in an excited state, there typically exists a wide range of potential photon emissions, and these emissions vary greatly between different elements. The capture of these photon emission patterns with diffraction gradient apparatuses is call spectroscopy. Spectroscopy is used heavily in fields like astronomy to determine the chemical composition of light sources too distant to observe directly.
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	===External links===		===External links===
	[http://www.scientificamerican.com/article/bring-science-home-reaction-time/]		[http://www.scientificamerican.com/article/bring-science-home-reaction-time/]
			[a href="https://www.rp-photonics.com/spontaneous_emission.html"]

	==References==		==References==