Publication:
A handheld LED coloured-light mixer for students to learn collaboratively the primary colours of light

Issued Date

2009-07-23

Resource Type

Article

ISSN

13616552
00319120

DOI

10.1088/0031-9120/44/2/001

Other identifier(s)

2-s2.0-67650695656

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Physics Education. Vol.44, No.2 (2009), 123-128

Suggested Citation

Suchai Nopparatjamjomras, Ratchapak Chitaree, Bhinyo Panijpan A handheld LED coloured-light mixer for students to learn collaboratively the primary colours of light. Physics Education. Vol.44, No.2 (2009), 123-128. doi:10.1088/0031-9120/44/2/001 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/28345

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Title

A handheld LED coloured-light mixer for students to learn collaboratively the primary colours of light

Author(s)

Suchai Nopparatjamjomras
 Ratchapak Chitaree
 Bhinyo Panijpan

Other Contributor(s)

Mahidol University

Abstract

To overcome students' inaccurate prior knowledge on primary additive colours, a coloured-light mixer has been constructed to enable students to observe directly the colours produced and reach the conclusion by themselves that the three primary colours of light are red, green, and blue (NOT red, yellow, and blue). Three closely packed tiny light-emitting diodes (LEDs) producing primary colours are combined with green intensity varying circuitry to generate the standard colour-triangle secondary colours and various shades ranging from yellow to orange and pale blue to cyan. In the laboratory, students worked collaboratively, predicting, observing and explaining, and finally discussing until there was a consensus. © 2009 IOP Publishing Ltd.

Keyword(s)

Physics and Astronomy
 Social Sciences

Availability

URI

https://repository.li.mahidol.ac.th/handle/20.500.14594/28345

Collections

Scopus 2006-2010