Rotating pendulum. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Rotating pendulum. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

In pocket and wrist watches, a special type of pendulum is used - a torsion pendulum. The wheel-balancer under the action of the spring rotates in one direction or the other. Its uniform movements ensure the accuracy of the watch mechanism.

A fairly well-known toy will help us simulate the movements of a torsion clock pendulum - a button with a harsh thread threaded through two holes.

For this experiment, select a large button, thread, as mentioned, a harsh thread through its two holes and tie the ends of the thread. Take the ends of the thread, placing the button in the middle. With circular motions of your hands, make sure that the threads are twisted. When they are well twisted, pull them in different directions. The button will begin to rotate rapidly and, by inertia, will twist the threads in the other direction.

Torsional pendulum

Alternating the tension and loosening of the threads, we will force the button to quickly rotate in one direction or the other. Whenever we pull the ends of the threads and thereby unwind them, we give the button a portion of energy. Our hands in this case act as an engine. The button will be in motion until you get tired of this fun.

Author: Rabiza F.V.

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Samsung Electronics has announced the start of mass production of 4Gb DDR8 chips using 20nm technology. The new memory chips enable the creation of 32 GB modules, whose production has already begun. In the future, Samsung will be able to create server modules with a capacity of 128 GB.

Samsung's new 8Gb DDR4 memory chips are certified to operate at frequencies up to 2400MHz with a supply voltage of 1,2V, the lowest in the industry. While the 8Gb memory chips will not operate at the ultra-high frequencies of the 4Gb variants, they will allow for larger modules, which is important for powerful next-generation servers based on multi-core Intel Xeon E5 v3 "Haswell-EP" processors.

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