Another ancestor of cinema. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
Directory / Entertaining experiences / Experiments in physics

Another ancestor of cinema. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

thaumatrope - one of the "ancestors" of cinema. And here is a closer ancestor: a stroboscope. It also has a very fast substitution of pictures. Only in the strobe there are more pictures, and they depict different moments of movement.

Here, for example, are four images of a girl tossing a ball. The first moment - the ball is below, in the hands of the girl. Moment two - the ball is half way up. The third moment - the ball is at the top point. The fourth moment - the ball is half way again. True, it is no longer up, but down, but the picture will still be exactly the same as the second one. Translate these pictures into cells on four identical sheets of drawing paper. At the same time, double them, that is, make the cells not 5, but 10 mm each.

Before gluing, pick up an axis (knitting needle) and bearings for the stroboscope - two glass or porcelain beads, which should be put on this knitting needle completely freely. Even hang out on it a little! Now roll a tube out of paper, equal in height to the pictures of the strobe light, and glue it by putting both beads inside (also with glue). During gluing, a knitting needle must be threaded into the beads, otherwise the holes may stand askew! The lower bead should peek out of the tube up to half, the upper one can be recessed inward.

Fold the pictures with the girl in half, only without a sharp bend (on a round pencil), and glue them with a cross, "back to back". Do not glue the lower edges, but slide the tube inside, but do not hesitate with this until the glue has dried. Cut out a circle with a diameter of 10 cm from cardboard. In the middle is a hole for the tube to pass through. Place the crosspiece with the pictures on the circle and glue the edges of the pictures. The bottom bead should be peeking out.

Another ancestor of cinema

Well, now put another bead on the knitting needle, under the lower one, and take the knitting needle in your left hand, and drive the cardboard circle with your right hand. The carousel with pictures will spin - faster, faster! And the ball in the hands of the girl will jump: up - down, up - down!

You can make other pictures for the stroboscope. Let's say a dog jumping through a hoop, or a little man raising and lowering his arms, or a devil jumping out of a box.

What an interesting ancestor of the cinema!

Author: Galpershtein L.Ya.

We recommend interesting experiments in physics:

▪ Experiment magnet

▪ Weightlessness and vegetable oil

▪ The secret of the sunbeam

We recommend interesting experiments in chemistry:

▪ Crystal patterns

▪ The formation of flakes in the reaction of potassium permanganate with sodium sulfite

▪ Sugar (sucrose) glows in the dark when rubbed

See other articles Section Entertaining experiences at home.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Nerve cells still regenerate 15.04.2018

The study of neurogenesis (the formation of new nerve cells - neurons) is a relatively new area of research. In recent years, scientists have proven that new neurons are formed throughout life in the brain of many mammals, but there is still no consensus in the scientific community on the issue of human neurogenesis.

New imaging techniques (such as confocal microscopy) have shown that, at least before puberty, new neurons form in the human hippocampus, a region of the brain involved in the formation of emotions and memory. The findings could help develop drugs for neurodegenerative diseases such as Alzheimer's, the scientists believe.

Maura Boldrini, a neuroscientist at Columbia University, and her colleagues took tissue samples from the hippocampus of 28 healthy people who had died no more than a few hours before. The age of these people at the time of death ranged from 14 to 79 years. Scientists have established the rate at which new blood cells and neurons of the dentate fascia of the hippocampus, the part of the brain where neurogenesis occurs, were formed in the body of the deceased during life.

"According to studies conducted on mice, there are pluripotent "mother" stem cells in the dentate fascia, the number of which, according to some reports, is limited. The development of "daughter" cells, formed as a result of the division of "mother" cells, may follow the path of formation of neurons " , Boldrini explains.

Boldrini and her colleagues found that the number of "mother" cells decreases with age, while "daughter" cells do not. Scientists found thousands of young, incompletely formed neurons in the dentate gyrus in all samples, regardless of the age of the people from whom the samples were taken. However, the older the person, the less cells in the dentate fascia that produce substances that are associated with the ability of the brain to rebuild existing neural connections and form new ones (neuroplasticity). "New neurons that appear in adulthood may form fewer connections with each other and other neurons, or migrate to other parts of the brain less frequently," the scientists conclude.

The loss of neuroplasticity may explain the emotional vulnerability that some people experience in adulthood, but new brain cells, including neurons, are still able to withstand the decline in cognitive skills, the authors of the new work say. Now scientists plan to find out at what rate young neurons are formed in people suffering from Alzheimer's disease and emotional problems.

Other interesting news:

▪ ON Semiconductor NCL30085/6/8 LED Driver Controllers

▪ Resurrection of mammoths

▪ Robot Football Championship

▪ Infrared LEDs vs Face ID

▪ Router Netgear R6250, 802.11ac (5G Wi-Fi)

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Electric motors. Article selection

▪ Rambam article. Famous aphorisms

▪ article How are the fates of Lenin and Kerensky similar? Detailed answer

▪ article Loader of a bag forming machine. Standard instruction on labor protection

▪ article Single ended high quality tube power amplifier. Encyclopedia of radio electronics and electrical engineering

▪ article Recharging galvanic cells. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews