Fun Science

Chemical Chameleon (NaOH, KMnO4 and sucrose)

The aurora borealis (northern lights) is a phenomenon of glow of the upper layers within the Earth's atmosphere, caused by the movement of charged particles of the solar wind in the magnetic field of the planet. Excited oxygen atoms cause red and green glow. Purple and invisible to the eye infrared radiation is caused by ionized nitrogen molecules. Hydrogen atoms can be the source of a weak red glow.

Magic? No, physics! The Leidenfrost Effect ☝🏻 That’s a physical phenomenon in which a liquid closer to the surface, hotter than the boiling point of the liquid, creates an insulating vapor layer that prevents the liquid from boiling rapidly. Due to this "repulsive force," the droplet floats above the surface rather than making physical contact with the hot surface.

The Elephant Toothpaste Experiment in Motion Potassium iodide (a colorless crystalline salt) reacted so violently with hydrogen peroxide that it literally pushed the products of the chemical reaction out of the flask.

Magnetic levitation of aluminum, copper and magnesium💡 Magnetic levitation is a technology, a method of lifting an object using a magnetic field alone. Magnetic pressure is used to compensate the acceleration of free fall or any other accelerations

Shots from a spacecraft approaching the Sun You can see Mars, Venus, the Milky Way, and Saturn.

Dust Devil It might seem as if we're talking about some fantasy character, although the dust devil is the atmospheric phenomenon resulting when the earth's surface gets extremely hot. Then the vortex movement of the air collects dust, sand, small objects, stones from the ground, thus forming a sandy (or dusty) vortex. Such a phenomenon is typical of the desert, but it has also emerged in cities in the middle of the streets. As a rule, the vortex does not exist more than 2 minutes and reaches no more than 20 meters in height.

Cellular Tropism This is the ability of cells to ensure the reproduction of certain viruses. It is determined by the complementarity (correspondence) of special cell receptors and virion antireceptors, as well as by the ability to implement other stages of virus reproduction.

How people lost their identity.. The photo shows a California prisoner, 1961, being prepared for a frontal lobotomy (amputation of part of the brain). The procedure was used to applied to people whose actions were considered immoral by society. This is how the state tried to control problematic groups, such as racial minorities and homosexuals.

Enormous achievement of 2021: The gene editor As in 2020, CRISPR-Cas9 genome editing technology was named among the major achievements. Why was it celebrated in 2021 as well? The fact is that, according to scientists, successful experiments on animals do not yet give a reason to apply the technology to humans. Here, the requirements are quite different. And yet this year such an operation was performed. With the help of CRISPR-Cas9 the gene causing a rare severe disease - transthyretin amyloidosis - was successfully edited for the first time. This work has been called a medical breakthrough. Another study by biologists is noted. They created hybrid human and macaque embryos that lived outside the body for up to 20 days. Such embryos are called chimeric ones. Scientists need them to study the early stages of human development, model the future course of diseases and study new drugs, and, in the future, to create potentially transplantable cells, tissues and organs.

A burnt match and a magnet Only those matches will be attracted that contain in their composition, the so-called iron minium — iron oxide (Fe₂O₃), which gives the match head its characteristic dark red color.

Demonstration of the incredible Coanda effect with the example of a ball that does not fall as it 'sticks' to the lower part of the air stream. Physics is a kind of magic indeed!

⚡️ A tip from channel's admin: start studying cryptocurrency. To get started: just subscribe to a special crypto channel that will teach anyone how to make $1000 from $100 in a few weeks or even faster. The CRYPTO CREW team (Crypto-community №1 in EU Europe🇺🇦 ) have sources among oligarchs and a lot of insiders, thanks to which they were the first to report the fall of Bitcoin, and every day they report hundreds of new currencies like Bitcoin, which in a couple of months will grow to 15 -30 times. More than 250,000 people have subscribed to the free, apply and you too: https://t.me/+tQm_NdMPeRo4ZWJi

​​Newton's Cradle Prototype of Incandescent Lamps Newton's cradle is a mechanical system designed to demonstrate the conversion of different kinds of energy into each other: kinetic energy into potential one and vice versa. In the absence of counteracting forces, the system could act forever, but in reality this is unattainable.

​​Heimlich Method ☝🏻This technique can save a person who is choking and suffocating. When performing abdominal thrusts, the lifesaver stands behind the patient and puts pressure on the lower part of the diaphragm with his hands. This compresses the lungs and puts pressure on any object lodged in the trachea and usually pushes it out.

Solar-Powered Levitating Engine Levitation is overcoming gravitation, when a subject or object floats in space (levitates) without touching the surface of a solid or liquid support. For levitation it is necessary to have a force that compensates the force of gravity. The sources of such forces can be gas jets, strong sound vibrations, laser beams, etc. Diamagnetic levitation and the possibility of levitation due to the Meissner effect have also been scientifically discovered and experimentally proven.

Such miracles are possible if you know exactly what the Leidenfrost effect is Here is a little trick: a grooved surface heated much higher than the boiling point of the liquid. That's where the effect, named after Johann Gottlob Leidenfrost, occurs. An elastic layer of vapor forms under the liquid droplets. As it is a poor heat conductor, the droplet evaporates slowly. And the tricky grooving "pushes" it upwards.

A classic example of a "trick" with the center of mass As a child, many people probably had a chumbley toy that, contrary to the fact that all bodies tend to fall, did not wanna do it, and returned to its upright position whenever you deflected it. Everyone knows the secret of this toy is that its mass is concentrated at the bottom, or, to speak scientifically, the center of mass is below the center of curvature of the base. The center of mass is such a physical abstraction. When gravity, for example, acts on a solid body, it is applied to every part of it. But it turns out that absolutely nothing will change if we imagine that all this force is applied to one single point — the center of mass. It's not hard to find it. 💡One should add all the masses that make up the body multiplied by their coordinates and divide by the total mass.

Shimon is an author and performer of his own songs, musician, professional marimba player and... ROBOT 🤖 Shimon analyzes millions of pieces of music in a wide variety of genres, from jazz to hip-hop, finding patterns and connected elements, sometimes beyond the human logic of creativity. And then it composes his own lyrics, generating meaningful — relatively meaningful, of course — lyrics that can give a head start to many contemporary pop singers. All this is reinforced by extensive semantic learning, as in addition to music and lyrics, any performer has its own special style, rhythm, even facial expressions. That’s what makes Shimon different from AI musicians like it. After all, even its voice is unique — generated by the program.