Service
Principle
Air is a gas mixture consisting mainly of nitrogen, oxygen and carbon dioxide. In the course of respiration, oxygen is consumed and carbon dioxide is formed. The volume fraction of oxygen in exhaled air is therefore smaller than in inhaled air.
Similarly, combustion (e.g. a candle flame) requires oxygen, which is used in this experiment as an "indicator" of oxygen concentration. Different concentrations of oxygen in the air lead to different burning times of a (candle) flame. Exhaled air has a lower concentration, therefore the burning time of a candle flame in exhaled air is shorter than in "normal" air.
Device name
Article no.
Quantity
Name
File name
File size
File type
(de) Versuchsbeschreibung
p9621200_de .pdf
File size 1.60 Mb
pdf
Free shipping from 300,- €