Drinking Bird
Art. 120.34

CHF 50.00        each

A great demonstration for the physics of heat and thermodynamic: Our little bird dips his beak into a glass of water as evaporative cooling induces the rise of a volatile liquid from his tail towards his head. As he dunks, the liquid returns to his tail, the bird stands up, and the process begins again.

Dimensions:  height 15 cm
Contains ether
Drinking Duck
Art. 157.103

CHF 20.00        each

Wet its head, stand it by a glass full of water and the intriguiing bird begins to „drink“ , bending back and forth as long as its head touches the water.  To understand this phenomenon requires some basic knowledge of physics.  However, even without this, you can carry out further fascinating experiments.

Height: 20 cm
Sand Pendulum
Art. 03.19

CHF 300.00      each

The classic sand pendulum in a new edition provides more than just relaxation.

 (extra sand available; can be supplied in larger sizes if required)

Dimensions: height 55 cm, Ø 31 cm
Design: Jürg Naef; „Original Naef“
Rott’s Chaotic Pendulum
Art. 23.02

CHF 490.00      each

à Design & Art

This chaotic pendulum was invented by Professor Nicolas Rott (Federal Institute of Technology, Zurich) in 1970.  Fixed and flexible parts in red treated metal which, once activated,  move in unforeseen ways around the fixed metal axis.  For mounting on a wall.

Size: 48 x 38 cm; requires space of  1 x 1 m
Design: Prof. Nicolas Rott

Rott’s Chaotic Pendulum small
Art. 23.04

CHF 190.00      each

 à Design & Art

This chaotic pendulum was invented by Professor Nicolas Rott (Federal Institute of Technology, Zurich) in 1970.  Fixed and flexible parts in silver treated metal which, once activated,  move in unforeseen ways around the fixed metal axis.  For mounting on a wall.

Size: 33 x 25 cm; requires space of  83 x 83  cm
Design: Prof. Nicolas Rott
Oloid bronze
Art. 27.03
CHF 420.00      each

 à  Geometry		 Paul Schatz developed the oloid which consists of two circles standing at right angles to each other. Described as a device to generate a tumbling motion, this can indeed be observed when the oloid is placed on a slightly inclined surface.

Available in matt or polished bronze

Dimension: length 17 cm, height 13 cm
Design: Paul Schatz
Alogo 1
Chaotic Pendulum
Art. 238.01

CHF 690.00      each

à  Physical toys

The chaotic pendulum is a simple means to illustrate the scientific phenomenon of chaos, as it is understood today.  The Alogo wall sculpture made of chromium consists of two or three moveable parts.  As soon as you touch the object, it begins to „dance“ chaotically

Ø 29.5 cm; length 40 cm
requires space of : 1.2 x 1.2 m
Design: Wernli/Dürst Architektur nach N. Rott
Dynamo Torch
Art. 157.54

CHF 34.00        each

Everything seems a little more friendly when illuminated.   So here is a torch which will never let you down.  Easily operated by a small dynamo and never affected by a power cut.

Size: 15 cm
Dynamo-Kit
for torch
Art. 157.77

CHF 36.00        each
 

Building set for the kinetic torch, which will never let you down.  Easily operated by a small dynamo and never affected by a power cut.  Everything seems a little more friendly when illuminated.  

Size: 15 cm (when put together)
Newton pendulum
Art. 157.33

CHF 45.00        each

The game with the chaim reaction.  If a ball on the outside hits those on the inside, these appear to remain still whille the outer one at the other end swings outwards.

Five metal balls hanging in a metal frame.

Radiometer
Art. 157.85


CHF 29.00        each

 

 The radiometer is also known as a light mill, solar power station or the Crookes’ radiometer.  It was invented by the chemist and physicisit Sir William Crookes.  Heat rays from the sun or a bulb warm the dark side of the wings  - and therefore the air around it -  more than on the light side.  The difference in pressure causes the turning motion of  the winged wheel.

Dimensions:  height: 12 cm


Mouvelette-Kit
Art. 03.107

CHF 98.00        natural
CHF 98.00        white
CHF 98.00        silver
CHF 98.00        anthrazit
CHF 98.00        red
CHF 98.00        petrol

 

 





Mouvelette Swiss

CHF 98.00        swiss

That solar-powered vehicles are not only environmentally friendly, but can also be beautiful is proven by the Solar racer Mouvelette, a genuine product of Swiss precision work.  It has received awards for its design, careful use of materials and high functionality.  The Mouvelette can overcome amazing inclines, powered soleley by the sun and is not put off by potholes.  On smooth, level surfaces it demonstrates its true elegance.  With the help of its turnable front axis it moves in lovely circles.  The transparent wheels and smart bodywork  catch your eye. 

The kit is easy to assemble.  In full sunshine,  the polycristal solar cells produce 350 mAJ.  

Design: Peter Wüthrich; „Original Naef“

Kit with solor module, wooden body, acrylic wheels, rubber tyres and instructions

Dimensions: 20 x 9 x 8 cm

 
Goethe-Barometer
Art. 157.83

CHF 55.00        each		 After his death in 1832, an instrument of this type was found to have belonged to Goethe.  It is half-filled with a liquid which evaporates very slowly and should be kept in a place where the temperature is constant.  As the air pressure rises, the level of the liquid sinks and vice-versa.  As the temperature increases, the liquid rises by steam pressure and vice-versa.  

Height: 26 cm

Love Meter or
Mood Indicator 
Art. 160.02

CHF 28.00        each		 The lower part of the glass container is filled with a red or blue liquid (ether).  As soon as you touch the glass with warm hands, the liquid bubbles up.

Size: 40 x 100 mm
Turning over top
Aluminium

Art. 70.06 polished
 CHF 38.00        each
Art. 70.06 matt
 CHF 36.00        each

à Tops

 Once the top has gathered speed, it flips over and continues to rotate on its stem. Available in polished or matt aluminium, packaged in black india rubber.

Diameter: 30 mm / Height: 33 mm
Design: Christoff Guttermann

 
Tumbling top
Art. 70.08

CHF 46.00        each

à  Tops

Two sections which can be combined in two ways, either to create a rotating top or a tumbling object (oloid, see illustration) which rolls down a slanting plain in a swaying movement.

Height: 30 mm
Colour: blue
Design: Christoff Guttermann

Eulers Disc
Art. 202.23

CHF 78.00        each

à Tops

Named after the famous mathematician Leonard Euler. A glittering chromuim disc, standing on its edge,  is placed on a concave mirror surface.  It turns faster and faster und, finally, ends up lying flat on the base.

Chromium disc: Ø 7 cm
Mirror surface: Ø 22 cm

Experimenting Set
'Licht & Farben'
Art. 122.07

CHF 64.00        each

 This „Light and Colour“ set will inspire you to carry out a variety of experiments and observations.  Some are based on every-day, but amazing, occurrences; others will suprise even adults.  You will gain interesting insights into colours, their formation and perception in light and shadow. 

From 10 years
Dimensions of box: 15,7 x 11,5 x 3 cm

Experimenting Set
'Licht und Finsternis'
Art. 122.01

CHF 49.00        each

  „Light and Darkness“   is a light-hearted introduction to the phenomena of light, shadow, mirrors and lenses.  It starts out with simple light games and an introduction to shadow play.

from 10 years
Dimensions of box: 15,7 x 11,7 x 4,6 cm

Experimenting Set
'Gläserne Kugel'
Art. 122.16

CHF 8.00          each

 This hollow glas ball becomes a magnifying glass or a lense when it is partially or completely filled with water.  You can see reductions when it is held under water and acts as a giant air bulbble.  What is really exciting are the intermediate stages and unexpected mirror images. You may even observe prism effects. 

Experimenting set from 9 years
Dimensions: 6,5x6,5x4,5 cm

Experimenting Set
'Spiegelräume'
Art. 122.32

CHF 52.00        each

 With four regular and one semi-permeable mirror experiments wil lead you from „simple“ mirror phenomena to multiple mirror images and allow insights into infinity.  Depending on the light, the permeable mirror changes its characteristics.  This results in images which combine vista and reflection, while reality is obscured.  A large open kaleidoscope magics colourful figures, lively patterns, honeycomb and snow flakes.  But you can go beyond magic:  Working in easy steps allows you to comprehend how the mirror images are created.  Depending on the angles between the mirrors, simple and complex spatial mirror images and spatial illusions are created – a small insight into the world of virtual images.

Experimenting set from 10 years
Dimensions Box: 20 x 20 x 3,5 cm

Experimenting Set
'Spiegelkabinett'
Art. 122.26

CHF 23.00        each

 With two mirrors, a flexible mirror and a mirror globe you can carry out many experimetns in the mysterious world of mirror images. Distorted images, mirrrored mirror images, distorted reflections of distorted mirror images....

Experimenting set from 8 years
Dimensions Box: 11,5x8,3x4,6 cm

Experimenting Set
'Wind und Wetter'
Art. 122.21

CHF 56.00        each

  Why does air move?  How is wind created and how does it blow around the house?  Why is air humid?  What is an inverted weather situation?  What can you see on a weather chart?  With many experiments and observations indoors and out, during summer and winter, be it calm, stormy, sunny,  raining or snowing , this set will provide answers to many  questions.  As you make progress, there are explanations which lead on to the next weather phenomenon.  You can also build a simple weather station with instructions on how to observe the weather on a daily basis.  The accompanying booklet covers all the essential aspects of meteorology.  It is a useful guide for students, youth leaders and teachers.

Observation and Experimenting set from 12 years
Dimensions: Box 22,5 x 16 x 4 cm

Experimenting Set Magnetic Forces
Art. 122.14

CHF 68.00        each

 All the experiments and components of the Small Magnet Box are included in this.  In addition, a second, strong magnet allows additional experiments.  With the help of the electric magnet you can construct a motor powerful enough to run small toys.  It can also be used as a dynamo and light up a small bulb.

Experimenting Set from 10 years
Box: 15,7 x 11,5 x 3 cm
Small Magnet Box
Art. 122.22

CHF 34.00        each
 		 Magnetism is an elemental force.  There are stones which contain iron and are naturally magnetic.   Yet we do not have a sense which responds to magnetism.  The materials in this set allow  you to experience the mysterious magnetic forces in a playful way.

Experimenting Set from 10 years
Box: 15,7 x 11,5 x 3 cm

Experimenting Set
Pulleys
Art. 122.23

CHF 40.00        each

 

 Lifting heavy items – no problem with a pulley.  Everyone has seen one, but few really know how it works.  This set allows you to design and try out a range of pulleys and understand what a few wheels and ropes can achieve.  It does not matter how much force you have, only how cleverly you use it.  Enjoy the experiments!

Experimenting Set from 10 years
Box: 15,7 x 11,7 x 4,6 cm
Mini Planetarium
Art. 122.39

CHF 50.00        each		 This pocket-sized planetarium vividly illustrates the course of the sun, moon and planets.  Magnetic discs in different colours mark the constellation in the zodiac; as the discs are turned, you can observe the movements of the sun, moon and planets which may be visible from Central Europe.

From 12 years
Dimensions: Box 22,3 x 16 x 1,8 cm
Light see-saw
Art. 122.11

CHF 38.00        each		 The light see-saw is powered by a tea light.  The motor consists of a spring made of bimetal.   As long as the flame burns, the figures bob up and down in a regular rhythm.  Enjoyable to watch, but not suitable for children. 

Set for self-assembly
Dimensions: 20 cm
Wendolin -
the gravity car
Art. 122.20

CHF 15.00        each		 A heavy steel ball under the bonnet runs the Wendolin.  As soon as the course is slightly sloping, it always moves downhill forwards, even if it has to turn before setting off.

Building set with driver
Construction from 9 years; play from 5 years
Dimensions: 8 cm
Aolinchen
Art. 122.25

CHF 14.00        each		 Even the slightest breeeze will make the sun and moon circle around each other.  Aolinchen looks very decorative in a flower pot; a group of them placed together in the garden looks particularly effective.  Ideas for further experiments with wind mills are included.

Building set from 8 years
Dimensions: Ø 24 cm