Gustav Kirchhoff - Revision history

Fwalker2017: /* Further Reading */

2015-12-01T07:47:50Z

Fwalker2017 at 07:46, 1 December 2015

2015-12-01T07:46:58Z

← Older revision		Revision as of 03:46, 1 December 2015
Line 40:		Line 40:
	The absorptivity of a body has to equal its emissivity at every wavelength. This law is further explored in thermodynamics and is established in mathematical terms by Max Planck.		The absorptivity of a body has to equal its emissivity at every wavelength. This law is further explored in thermodynamics and is established in mathematical terms by Max Planck.

	==Applications Today===		==Applications Today==
	-A matrix version of Kirchhoff’s current law is the basis of most circuit simulation software		-A matrix version of Kirchhoff’s current law is the basis of most circuit simulation software

Fwalker2017 at 07:46, 1 December 2015

2015-12-01T07:46:30Z

@@ Line 39: / Line 39: @@
 “For a body of any arbitrary material, emitting and absorbing thermal electromagnetic radiation at every wavelength in thermodynamic equilibrium, the ratio of its emissive power to its dimensionless coefficient of absorption is equal to a universal function only of radiative wavelength and temperature. That universal function describes the perfect black-body emissive power.”
 The absorptivity of a body has to equal its emissivity at every wavelength. This law is further explored in thermodynamics and is established in mathematical terms by Max Planck.
 ==See Also==
@@ Line 48: / Line 55: @@
 ====Websites====
 . http://www.electronics-tutorials.ws/dccircuits/dcp_4.html

Fwalker2017: /* See Also */

2015-12-01T07:40:31Z

Fwalker2017 at 07:37, 1 December 2015

2015-12-01T07:37:15Z

← Older revision		Revision as of 03:37, 1 December 2015
Line 39:		Line 39:
	“For a body of any arbitrary material, emitting and absorbing thermal electromagnetic radiation at every wavelength in thermodynamic equilibrium, the ratio of its emissive power to its dimensionless coefficient of absorption is equal to a universal function only of radiative wavelength and temperature. That universal function describes the perfect black-body emissive power.”		“For a body of any arbitrary material, emitting and absorbing thermal electromagnetic radiation at every wavelength in thermodynamic equilibrium, the ratio of its emissive power to its dimensionless coefficient of absorption is equal to a universal function only of radiative wavelength and temperature. That universal function describes the perfect black-body emissive power.”
	The absorptivity of a body has to equal its emissivity at every wavelength. This law is further explored in thermodynamics and is established in mathematical terms by Max Planck.		The absorptivity of a body has to equal its emissivity at every wavelength. This law is further explored in thermodynamics and is established in mathematical terms by Max Planck.

	~~[[File:Spectral-lines-continuous.svg\|thumb\|Continuous Spectrum]]~~
	~~[[File:Spectral-lines-emission.svg\|thumb\|Emission spectrum\|Emission Lines]]~~
	~~[[File:Spectral-lines-absorption.svg\|thumb\|Absorption spectroscopy\|Absorption Lines]]~~

	==See Also==		==See Also==
	===Further Reading===		===Further Reading===
			1. Kirchhoff, G. (1860). "Ueber das Verhältniss zwischen dem Emissionsvermögen und dem Absorptionsvermögen der Körper für Wärme and Licht". Annalen der Physik und Chemie 109 (2): 275–301. Bibcode:1860AnP...185..275K. doi:10.1002/andp.18601850205. Translated by Guthrie, F. as Kirchhoff, G. (1860). "On the relation between the radiating and absorbing powers of different bodies for light and heat". Philosophical Magazine. Series 4 20: 1–21.
	===External Resources===		===External Resources===
			====Videos====
	==~~Resources~~==		1. Further Demonstration of Circuit Laws: https://www.youtube.com/watch?v=Z2QDXjG2ynU
			====Websites====
			http://www.electronics-tutorials.ws/dccircuits/dcp_4.html

Fwalker2017: /* The Current Law */

2015-12-01T07:29:54Z

The Current Law

← Older revision		Revision as of 03:29, 1 December 2015
Line 19:		Line 19:

	2. Sum the entering currents on one side of the equation and equate it to the sum of exiting currents		2. Sum the entering currents on one side of the equation and equate it to the sum of exiting currents

	<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>		<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>

Fwalker2017: /* The Current Law */

2015-12-01T07:29:11Z

The Current Law

← Older revision		Revision as of 03:29, 1 December 2015
Line 17:		Line 17:
	[[File:KCL - Kirchhoff's circuit laws.svg\|thumb\|center\|\|KCL - Kirchhoff's circuit laws]]		[[File:KCL - Kirchhoff's circuit laws.svg\|thumb\|center\|\|KCL - Kirchhoff's circuit laws]]
	1. Note the direction of current flow into the circuit		1. Note the direction of current flow into the circuit

	2. Sum the entering currents on one side of the equation and equate it to the sum of exiting currents		2. Sum the entering currents on one side of the equation and equate it to the sum of exiting currents
	<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>		<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>

Fwalker2017: /* The Current Law */

2015-12-01T07:28:31Z

The Current Law

← Older revision		Revision as of 03:28, 1 December 2015
Line 16:		Line 16:
	'''Example'''		'''Example'''
	[[File:KCL - Kirchhoff's circuit laws.svg\|thumb\|center\|\|KCL - Kirchhoff's circuit laws]]		[[File:KCL - Kirchhoff's circuit laws.svg\|thumb\|center\|\|KCL - Kirchhoff's circuit laws]]
			1. Note the direction of current flow into the circuit
			2. Sum the entering currents on one side of the equation and equate it to the sum of exiting currents
	<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>		<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>

Fwalker2017: /* The Current Law */

2015-12-01T07:14:32Z

The Current Law

← Older revision		Revision as of 03:14, 1 December 2015
Line 14:		Line 14:
	<math> \sum {I}_{entering}+ \sum {I}_{exiting} = 0 </math>		<math> \sum {I}_{entering}+ \sum {I}_{exiting} = 0 </math>

	'''Example'''		'''Example'''
	[[File:KCL - Kirchhoff's circuit laws.svg\|thumb\|center\|\|KCL - Kirchhoff's circuit laws]]		[[File:KCL - Kirchhoff's circuit laws.svg\|thumb\|center\|\|KCL - Kirchhoff's circuit laws]]
	<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>		<math> {i}_{2} + {i}_{3} = {i}_{1} + {i}_{4} </math>

Fwalker2017: /* The Voltage Law */

2015-12-01T07:13:56Z

The Voltage Law

← Older revision		Revision as of 03:13, 1 December 2015
Line 22:		Line 22:
	<math> \Delta {V}_{1} + \Delta {V}_{2} + \space.... = 0 </math>		<math> \Delta {V}_{1} + \Delta {V}_{2} + \space.... = 0 </math>

	'''Example'''		'''Example'''
	[[File:Kirchhoff voltage law.svg\|thumb\|center\|\|Kirchhoff voltage law]]		[[File:Kirchhoff voltage law.svg\|thumb\|center\|\|Kirchhoff voltage law]]
	1. Start at any point in the loop and continue in the same direction		1. Start at any point in the loop and continue in the same direction

← Older revision		Revision as of 03:47, 1 December 2015
Line 50:		Line 50:
	===Further Reading===		===Further Reading===
	1. Kirchhoff, G. (1860). "Ueber das Verhältniss zwischen dem Emissionsvermögen und dem Absorptionsvermögen der Körper für Wärme and Licht". Annalen der Physik und Chemie 109 (2): 275–301. Bibcode:1860AnP...185..275K. doi:10.1002/andp.18601850205. Translated by Guthrie, F. as Kirchhoff, G. (1860). "On the relation between the radiating and absorbing powers of different bodies for light and heat". Philosophical Magazine. Series 4 20: 1–21.		1. Kirchhoff, G. (1860). "Ueber das Verhältniss zwischen dem Emissionsvermögen und dem Absorptionsvermögen der Körper für Wärme and Licht". Annalen der Physik und Chemie 109 (2): 275–301. Bibcode:1860AnP...185..275K. doi:10.1002/andp.18601850205. Translated by Guthrie, F. as Kirchhoff, G. (1860). "On the relation between the radiating and absorbing powers of different bodies for light and heat". Philosophical Magazine. Series 4 20: 1–21.

			2. https://en.wikibooks.org/wiki/Circuit_Theory/Kirchhoff%27s_Law

	===External Resources===		===External Resources===
	====Videos====		====Videos====

← Older revision		Revision as of 03:40, 1 December 2015
Line 47:		Line 47:
	1. Further Demonstration of Circuit Laws: https://www.youtube.com/watch?v=Z2QDXjG2ynU		1. Further Demonstration of Circuit Laws: https://www.youtube.com/watch?v=Z2QDXjG2ynU
	====Websites====		====Websites====
	http://www.electronics-tutorials.ws/dccircuits/dcp_4.html		1. http://www.electronics-tutorials.ws/dccircuits/dcp_4.html