Système d'Expérimentation élèves TESS

 
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Acidity changes of à watercourse

Principle

The pH value (a measure of the concentration of hydrogen ions) in running waters depends on the geological conditions, the pollution load that is caused by agricultural production, and on plant activities. This experiment shows how the pH value of a stream changes even at a short ...

 
Détails

Numéro d´article: P1520862

Acidity changes of à watercourse

 
Détails

Numéro d´article: P1520869

Comparação das temperaturas do solo e do arlongo do dia com 4 Cobra

Principle

How does the temperature of the air affect the temperature of the soil in the course of a day?

Benefits

  • Experiment is part of an experiment set with numerous experiments in ecology
  • Universal handheld measurement device can also be used for other measurement parameters ...
 
Détails

Numéro d´article: P1520962

Comparação das temperaturas do solo e do arlongo do dia com 4 Cobra

 
Détails

Numéro d´article: P1520969

La valeur pH de différents sols

Principle

Information concerning the quality of soils is of great importance for agricultural production. The students are familiarised with this subject via two experiments with pH measurements that show how much soils may differ from each other (experiment  "Characteristic pH values ...

 
Détails

Numéro d´article: P1521062

La valeur pH de différents sols

 
Détails

Numéro d´article: P1521069

La salinité de différents sols et substrats de plantes

Principle

How suitable are certain soils and plant substrates for the nutrition of plants? This experiment is about measuring the conductivity, which in turn provides information as to which of the examined soils and plant substrates already contain nutrient salts for plant growth and to ...

 
Détails

Numéro d´article: P1521162

La salinité de différents sols et substrats de plantes

 
Détails

Numéro d´article: P1521169

Raised bog and fen

Principle

Bogs and fens are habitats of plants that are specialised in soils with constant excess water. Apart from this specialisation, bogs and fens differ significantly from each other. Raised bogs and fens, for example, have different plant communities, which is due to their varied ...

 
Détails

Numéro d´article: P1521262

Salinity changes of à watercourse

Principle

This experiment shows how the salt that is washed out of an abandoned potassium rock pile drastically increases the salinity of a watercourse, as well as how the salinity decreases only slightly further downstream, and how the salinity can still be measured after the stream has ...

 
Détails

Numéro d´article: P1521462

Salinity changes of à watercourse

 
Détails

Numéro d´article: P1521469

Learning stations using the experimentation case"Cobra4 Mobile, Environment and outdoors"

Principle

We are dealing here with circuit learning for four work groups. Use is made of the Cobra4 Sensor-Units and Mobile-Link handheld measuring instruments that are provided in the environment and outdoors experimentation case. One of each of the instruments is required at each of the ...

 
Détails

Numéro d´article: P1521562

We visit à wastewater treatment plant

Principle

A visit to a water treatment plant reveals some fascinating procedures and purification methods. We will not merely be concerned with interesting impressions, but instead we will increase our understanding for microbiological processes by measuring the key parameters: ...

 
Détails

Numéro d´article: P1521662

We visit à wastewater treatment plant

 
Détails

Numéro d´article: P1521669

Nous déterminons notre fréquence cardiaque

Principle

An electrocardiogram (ECG) enables you to observe the regular sequence of heart contractions as well as to determine your heart frequency by determining the interval between two heart contractions. In a second experiment, you will measure the heart frequencies of test persons of ...

...

 
Détails

Numéro d´article: P1522060

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