Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library

Directory / Entertaining experiences / Experiments in physics

Weightlessness and vegetable oil. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Comments on the article Comments on the article

You, of course, know that in the cockpit of a spaceship during free flight, all objects lose weight. Pencils, notebooks float in the air like balloons. Yes, pencils - irons, and they would float if only they were taken on a space flight!

Well, liquids in zero gravity "do not want" to fill glasses, pots and other utensils. They "do not want" to submissively take the form of the vessel into which they are poured. No, liquids flutter in the air, gathering into neat ball drops! This is why astronauts are not allowed to drink from glasses and eat soup from bowls. They have to squeeze liquid directly into their mouths from a tube that looks like a tube of toothpaste, only bigger.

Do you want to observe liquid in zero gravity? No, not yet in a spaceship, but at home, in the kitchen. It is quite possible, although the experience is difficult.

For the experiment, three liquids are needed: water, vegetable oil and alcohol. Oil is lighter than water, and if you pour it into a jar of water, it will collect in a layer on the surface. And if you pour the same oil into alcohol, it will gather in a layer at the bottom. So alcohol is even lighter than oil.

If alcohol is added to a glass of water, then the oil added to this mixture will sink in alcohol, but will not sink in water. It should float on the border of water and alcohol. The difficulty of our experience lies precisely in the fact that it is necessary to very carefully, very carefully pour alcohol into a glass of water so that these liquids do not mix. To do this, first pour water up to half, and then slowly drain the alcohol along the wall of the glass.

Weightlessness and vegetable oil

Filling the glass almost to the top, carefully pour a teaspoon of vegetable oil into it. Perhaps you expected that it would spread in a layer on the border of alcohol and water? Nothing like it! But the oil was in a state of weightlessness. It seems to "float" on the interface. And, as if in the cockpit of a spaceship, this "weightless" oil will gather into a ball, completely even and smooth! Unless it is flattened, if the water and alcohol at the border are still a little mixed up.

Author: Galpershtein L.Ya.

 We recommend interesting experiments in physics:

▪ Competition of two pencils

▪ Live fish and toy fish

▪ Animated pieces of iron

 We recommend interesting experiments in chemistry:

▪ Sulfur in egg white

▪ Extraction of chlorophyll with alcohol

▪ Speeding Up a Reaction - How Catalysts Work

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

Cold from the lake 09.11.2007

A large city spends huge amounts of energy on air conditioning in buildings. The original solution to the problem was found in the Canadian city of Toronto.

The city stands on the shores of Lake Ontario, where in the deep layers the water temperature remains at +4°C all year round. Three polyethylene pipes with a diameter of 1600 millimeters and a length of 5 kilometers to a depth of 83 meters were led into the lake.

The cold water is first filtered and then passed to a heat exchanger, from where the cold is transferred to the air conditioning systems of 36 downtown Toronto office buildings. Another 16 skyscrapers signed contracts to connect to the system. Together, they will save the city 61 megawatts of electricity per year. The heated water enters the city water supply system and satisfies 15% of the need for drinking water.

A similar air conditioning system works in Stockholm, but it operates on water from the sea.

Other interesting news:

▪ Modular Framework Laptop

▪ Biometric wristband with GPS

▪ Named the most attractive type of woman

▪ A new flexible type of battery for wearable electronics

▪ New generation Chevrolet Volt with smart charging system

News feed of science and technology, new electronics


Interesting materials of the Free Technical Library:

▪ section of the site Civil radio communications. Article selection

▪ article How to act when meeting with a criminal. Fundamentals of safe life

▪ Why do crocodiles cry when they eat meat? Detailed answer

▪ Article Bites of reptiles and insects. Health care

▪ article Magic relay. Encyclopedia of radio electronics and electrical engineering

▪ article Radio station with AM. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:


Email (optional):

A comment:

Comments on the article:

Super article, the best of all.

Yes, interesting to try, thank you very much [up]

And if you take some other liquid instead of alcohol, which will also be lighter than water and oil, will it be the same?

All languages ​​of this page

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