Properties of a concave reflector © Siemens Stiftung 2011. All rights reserved.
CC BY-NC-SA 4.0 international

Properties of a concave reflector

Video

Video (00:22 minutes):
Light strikes a concave reflector and ignites a sparkler in the process.

English, German
Video (3.4 MByte)
2019-04-17
The video shows a light source directed at a concave reflector. The reflected light is concentrated into a focal point. The high temperature of the focal point ignites a sparkler.
The video ends with a concrete application of this physical principle – the solar stove.

This video is an excerpt from the teaching DVD,
„Optik – Eigenschaften des Lichts".
Experiment; Illustration
Physics; Technology
Grade 7 to 9; Grade 10 to 13
Middle/high school
Optics; Power generation; Solar energy
Siemens Stiftung Media Portal
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© Siemens Stiftung 2011. All rights reserved.
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