Sensory organs

Cobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOG

To perform electrophysiological, noninvasive, measurements of heart, eye andmuscle activities.The measurement electrodes are connectedto 3,5-mm jacks using three separate andshielded measurement cords. The sensorcan be connected to a PC wirelessly orto a USB-port.Requires measurement cords an ...

Three colour lamp

Function and Applications

For color mixing experiments in conjunction with brightness plate.

Benefits:

• The three-colour lamp consists of three independent light sources of particularly high luminosity, mounted next to each other on a common support ...

Brightness adjuster f.13760.88

Function und Applications

Adjusting unit for a continuous variation of the intensity of illumination.

Equipment and technical data:

• 3 outputs 0...12 V DC/4 A (diode sockets).
• Mains voltage 230 V/50 Hz,
• housing dimensions (mm) ...

Sine wave generator, 10 Hz - 20 KHz

Function and Applications

For generation of sine wave signals for audiometry und acoustics.

Benefits:

• Connection for head phone (jacksocket) and loud speaker (4 mmoutput sockets)
• 4-digit digital display
• Cut-off switch for the he ...

Headphone, stereo

Function and Applications

Headphone

Benefits:

• closed ear cups

Equipment and technical data:

• Distortion factor <= 1%
• Impendance 400 Ohms
• Frequency range 20 to 20,000 Hz
• headphone ...

Strobe drum

Temperature organ

Function and Applications

This ring-shaped apparatus enables a temperature gradient to be formed, and is a valuable tool for working out ecological relationships.

Benefits:

• It allows,e.g., to observe the influence of the temperature of soil on germ ...

Perimeter, diameter 60 cm

Function and Applications

Perimeter consisting of semicircular channel with protractorscale-10 degr. divisions, rotable around one axis.

Equipment and technical data:

• 10 metal disks diameter 13 mm
• 1 sheet of diff. coloured labels

Human eye,working model

Function and Applications

This model is a mechanical copy of an eyeball.

Benefits:

• The back part of which is formed as a projection surface and is removable.
• Various eyeball lengths can be attained by inserting spacer rings.
• C ...

Sensory stimulus, student kit

Function and Applications

StudentKit Sensory stimulus for comprehensive group work.

Testing taste:

• Salty and sweet,  bitter and sour solutions
• 30 plastic dishes
• 120 cotton-wool rod ...

The Eye, 5 groups, stud.kit

Function and Applications

Eye models for 5 student groups to learn the following eye functions:

• contrast viewing (bright-dark)
• direction viewing
• recognizing forms
• functions of the eye lens
• far-sightedness with correction

Spectacles, upside down

Function and Applications

Spectacles, upside down.

Benefits:

• The world is upside down, as for newborns. This experiment is fun!
• Put on the glasses and shake hands with someone, put coloured water into a glass (a particular thrill!).
...

Spectacles with 10 colour.filters

Function and Applications

Spectacles with colour filters.

Benefits:

• With these coloured glasses, students can observe the dependence of colour sensation on the reflection, absorption and mixing of wave lengths.
• The glasses are supp ...

Loudspeaker/Sound head

Function and Applications

Dynamic sound head on stem with a pair of 4 mm sockets.

Equipment and technical data

• Output power: 1 W (4 Ohm).
• Frequency response (-10 dB): 150...20000 Hz.

Directional cylinder

Function and Applications

Fitting to sound head / loudspeaker (03524-00).