Pendulum STEM Lab
Before 23.45 ordered- tomorrow delivered
Orders placed from Sunday to Friday till 23:45 will be delivered the next day. Orders placed on Saturday will be delivered on Monday.
Belgium & Luxemburg
Shipments to Belgium & Luxemburg could take 1 extra day to be shipped.
30 days warranty on parts
We regard a broken part as an exception, because we always deliver the best quality with full responsibility. But we cannot rule out a small accident.
If the purchase was made via our web-shop no more than 30 days ago, then you may order a new part from our website for free. In all the other cases you will need to pay a small handling fee. Order part here
30 days return time
You have the right to cancel your order up to 30 days after receipt without giving any reason, provided that the seal has not been broken. When the seal is broken, your order is final and can no longer be returned. If you make use of your right of withdrawal, you have another 14 days after cancellation to return your product. You will then be credited with the full order amount including shipping costs. If you make use of your right of withdrawal, the product will be returned to the entrepreneur with all accessories supplied and in its original condition and packaging. To exercise this right, please contact us via email@example.com We will send you a return label in the mail. You can print this label and stick it on the repackaged shipment. Then you can hand it in by post at no extra cost. We will then refund the order amount due within 14 days after registering your return in case the product has already been returned in good order.
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Learn how the PENDULUM works:
The Pendulum is a stylised educational model, an interactive study guide to the mechanism, only for learning its essentials and principles of working. The pendulum is one of the basic and most reliable time measuring mechanisms. Its working principle is based on the model's constant amplitude oscillation under the force of gravity (weight) and potential energy (tension force) of the rubber band. The rubber band powers the mechanism of the model and compensates for the pendulum's oscillations' kinetic energy loss. The device is animated by means of gear unit with a windup wheel.
The model has an anchor escapement controlling the frequency of oscillations, a weight, a scape-wheel, gearing, rubber band, ratchet and pawl reducing operation error. The model has several means to control the frequency of oscillations: the weight of the pendulum bob, the vertical position of the weight on the pendulum, and the tension of the rubber band.
When and who invented it:
The first study of the pendulum was implemented by Galileo Galilei, an Italian engineer in the end of the 16th century. He described the property of the pendulum to preserve the consistency of the oscillations. The first person to use a pendulum in a mechanical clock and ensure a steady rate was a Dutch physicist Christiaan Huygens back in the 17th century.
Pendulums are mainly used in mechanical clocks as an element of a launch mechanism and the way to provide a steady rate. In the musical sphere, metronomes that have pendulums as their chief constructional element, help musicians practice playing to a regular tempo. Pendulums are also used in geological surveying, seismography, sports, and laboratory research in mechanics and physics.