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Water quality - contamination avec heavy métals

Principle

Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanic or similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlled by these enzymes may ...

 
Détails

Numéro d´article: P0990162

Nous étudions notre rythme cardiaque - électrocardiographie



Principle

The heart is a hollow, muscular organ that comprises several secondary muscles. These secondary muscles contract and relax successively, thus pumping the blood through the heart. These muscle activities can be measured electrically as a whole at the surface of the skin ...

 
Détails

Numéro d´article: P1332760

Nous étudions notre rythme cardiaque - électrocardiographie

 
Détails

Numéro d´article: P1332769

Electromyographie (EMG)sur le bras supérieur

Principle

With the exception of the heart muscle, the contractions of striated muscles can be controlled at will. This characteristic enables the observation of the activities of individual muscle groups. An electromyogram (EMG) can be used to measure (record) the electrical activity (i.e. ...

 
Détails

Numéro d´article: P1350360

Electrooculographie humaine (EOG) avec Cobra4

Principle

With this experiment, you can find evidence of the electrical activity that is generated during the movement of your eyes. Several electrodes attached to the skin of the face measure all the changes of the electrical voltage that are caused by the movement of the eyes. This ...

 
Détails

Numéro d´article: P1350460

Vérification de notre eau potable avec Cobra4

Principle

This experiment shows how much the quality of drinking water of various locations in the same region can vary. The comparison of tap water with bottled mineral water and distilled water leads to surprising results.

Benefits

  • Experiment is part of an experiment set with ...
 
Détails

Numéro d´article: P1520062

Vérification de notre eau potable avec SMARTsense

 
Détails

Numéro d´article: P1520069

Observations météorologiques avec Cobra4

Principle

The compact Cobra4 "Weather" multisensor can be employed as a simple means to set up a weather station, which can then be used to explain the relationship between air pressure, humidity, temperature, and light intensity. The measurement combination of a Cobra4 Mobile-Link and a ...

...

 
Détails

Numéro d´article: P1520462

Observations météorologiques avec SMARTsense

 
Détails

Numéro d´article: P1520469

Changes of the light conditions in à deciduous pourest

Principle

Why are there only a few different kinds of plants in a deciduous forest? Except for having trees that are all approximately of the same height, hardly any other plants grow in a deciduous forest, except for young plants of the same type of trees. This experiment shows how the ...

 
Détails

Numéro d´article: P1520762

Changes of the light condition in a forest with SMARTsenses in à deciduous pourest

 
Détails

Numéro d´article: P1520769

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

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