Total reflection and the critical angle

Продукт No: P1064800


With total reflection the students become acquainted with an important special case of the law of reflection, when light passes from an optically denser to an optically less dense medium, which has a special importance for technology (fibre-optic cables).
In this experiment, the students should first become familiar with the known phenomenon of refraction when light passes from glass to air, but their attention is to be directed to the region within the block and thus to the increasing reflection of light.
In an additional procedure they observe and investigate the case in which light hits the boundary between glass and air at an angle which is smaller than the critical angle for total reflection.


  • Multifunctional light box - All-in-one: Can be used for geometric optics on the table, colour mixing and on an optical bench
  • Extension with others sets at anytime, no additional light sources needed, recognition value for students


What does the term "total reflection" mean? Investigate the behaviour of narrow light beams when light passes from glass to air with an angle of incidence greater than 40°.

Перечень материалов (вы́писка) Продукт Количество
PHYWE power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A 13506-93 1
Light box, halogen 12V/20 W 09801-00 1
Optical disk 09811-00 1
Block, semicircular 09810-01 1

Литература по данной статье

Название Продукт Язык
interTESS DVD Physik 01050-00
interTESS DVD Physik, Optik und Wellenoptik 01053-00
interTESS DVD, vollständige Version mit allen Versuchen Physik, Chemie, Biologie, Applied Sciences 01100-00
Handbuch Schülerversuche Optik, TESS advanced Physik 01164-01 DEU
TESS advanced Physics manual Optics 01164-02 ENG
TESS advanced Physique manual Optique 01164-03 FRA
TESS advanced Física manual Optica 01164-04 ESP
Schülerversuche Optik 1, Gerätesatz TESS advanced Physik OE 1, inkl. Leuchtbox 15276-88

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Продукт No: P1064800

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