A tutorial for laboratory determination of Planck’s constant from the Planck radiation law

dc.creator	Adam Usman
dc.creator	John Dogari
dc.creator	M. Ridwan Enuwa
dc.creator	Isa Sambo
dc.date	2009-05-01T00:00:00Z
dc.date.accessioned	2015-07-20T22:12:19Z
dc.date.available	2015-07-20T22:12:19Z
dc.identifier	1870-9095
dc.identifier	https://doaj.org/article/db4641530fb54e57973a960fbad1f473
dc.identifier.uri	http://evidence.thinkportal.org/handle/123456789/15146
dc.description	AbstractDetailed discussions are presented on the determination of Planck’s constant from the Planck radiation law. Thelaboratory setup consists of a low cost lamp and a photodiode such that a light filter of known wavelength isinterposed between the two pieces of apparatus. The lamp filament is the approximate blackbody of which radiation isgoverned by the Planck’s law of radiation. For the purposes of didactics, it is explained that laboratory precautions willenable accurate data. However, if the governing equation is subjected to spurious approximations, errors will beinevitable in the computation. This was the situation before. Now, when the setup is in operation, a phenomenon ofresistance-temperature filter effect is observed. Data collected have been subjected to interesting analyses, which canbe used to introduce students into numerical experiments. Usually, a pair of intensity values calculated from theobserved phenomenon, would be required. Ratio of the intensities is then used in the exact Planck’s radiationequations leading to a transcendental exponential equation. Solutions of this equation subsume the precise value of thePlank’s constant.
dc.language	English
dc.language	Spanish
dc.language	Portuguese
dc.publisher	Instituto Politécnico Nacional, Latin American Physics Education Network
dc.relation	http://www.journal.lapen.org.mx/May09/LAJPE%20276%20preprint%20f.pdf
dc.relation	https://doaj.org/toc/1870-9095
dc.source	Latin-American Journal of Physics Education, Vol 3, Iss 2, Pp 246-252 (2009)
dc.subject	Planck’s constant determaintion
dc.subject	numerical experiment
dc.subject	photoemperature
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	DOAJ:Education
dc.subject	DOAJ:Social Sciences
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	DOAJ:Education
dc.subject	DOAJ:Social Sciences
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.title	A tutorial for laboratory determination of Planck’s constant from the Planck radiation law
dc.type	article