Interesting facts about physics. How can you turn headphones into a microphone? Presentations on physics Presentations on physics

If you connect regular headphones to the microphone input, they can be used as a microphone. In a simplified way, the design of the headphones and microphone is the same: the membrane is connected to a coil of wire located in the magnetic field of a permanent magnet. In headphones, during normal use, the current supplied to the coil is converted into vibrations of the membrane, and in a microphone, vice versa.

If you find yourself in a falling elevator, the best strategy to increase your chances of survival is to lie on your back and try to occupy as much ground as possible. large area floor. In this case, the impact force will be distributed as much as possible over the surface of the body. A common belief is that you just need to jump during the impact, but this is a misconception and it is unlikely that anyone will be able to accurately guess the time of the collision and jump at the same speed as the elevator falls

To look through glass with a matte surface, just stick a piece of transparent tape on it. Due to the irregularities of the frosted glass, the light is scattered, but the adhesive side of the tape smooths out these irregularities, and as a result, the light passes through as if through ordinary glass. It should be added that if the surface is matte on both sides, this trick will no longer work.

There is an optical phenomenon that can be called an inverted rainbow, although it happens very rarely. Such a rainbow appears only when several conditions are met. In the sky at an altitude of 78 km there must be a thin curtain of cirrus clouds consisting of ice crystals, and sunlight must fall on them at a certain angle in order to be decomposed into a spectrum and reflected into the atmosphere. The colors in an upside down rainbow are also arranged in reverse: purple is at the top and red is at the bottom.

A bird sitting on a high-voltage power line does not suffer from the current because its body is a poor conductor of current. In places where the bird's paws touch the wire, a parallel connection, and since the wire conducts electricity much better, a very small current runs through the bird itself, which cannot cause harm. However, as soon as the bird on the wire touches another grounded object, for example, a metal part of a support, it immediately dies, because then the air resistance is too great compared to the resistance of the body, and all the current flows through the bird.

If you spin a boiled egg on a smooth surface, it will quickly spin in a given direction and will spin for quite a long time, while a raw egg will stop much earlier. This happens because a hard-boiled egg rotates as a single whole, while a raw egg has liquid contents, loosely bound to the shell.

History of Physics Some historians of science believe that natural science arose around the 5th century BC. e. in Ancient Greece, where, against the background of the decomposition of mythological thinking, the first programs for studying nature arose. Already in Ancient Egypt and Babylon, significant mathematical knowledge had been accumulated, but only the Greeks began to prove theorems. If science is interpreted as knowledge with its justification, then it is quite fair to assume that it arose around the 5th century BC. e. in the cities-polises of Greece - the center of future European culture.

History of Physics Aristotle (BC) is called the godfather of physics: after all, the name of one of his works “Physics” (8 books) became the name of an entire science - physics...

Connection of physics with other sciences All sciences began with PHYSICS, for PHYSICS is the beginning of all beginnings, i.e. nature. The connections of physics are so diverse that sometimes people do not see them. I am trying to overcome this limited understanding of physics and try to show the connection of physics not only with the natural sciences (which, in general, is obvious), but also with the humanities Main menu Natural sciences AstronomyTechnologyPhilosophy

Connection with natural sciences According to academician. S.I. Vavilova, the close connection of physics with other branches of natural science led to the fact that physics has deep roots in astronomy, geology, chemistry, biology and other natural sciences. As a result, a number of new related disciplines were formed, such as astrophysics, geophysics, physical chemistry, biophysics, etc. back

With technology This connection is two-way. Physics grew out of the needs of technology (the development of mechanics among the ancient Greeks, for example, was caused by the demands of construction and military equipment of that time), and technology, in turn, determines the direction of physical research (for example, at one time the task of creating the most economical heat engines caused the rapid development thermodynamics). On the other hand, it depends on the development of physics technical level production. Physics is the basis for the creation of new branches of technology (electronic technology, nuclear technology, etc.). back

With philosophy Such major discoveries in the field of physics, such as the law of conservation and transformation of energy, were the arena of intense struggle between different approaches in philosophy. A correct philosophical generalization of scientific discoveries in the field of physics plays a large role in the formation of a scientific worldview. back

Field The main, along with matter, form of matter, characterized by the absence of rest mass. Fields connect the main components of matter (elementary particles) into unified systems and transmit the action of one particle to another at a finite speed, i.e. carry out physical interactions. Physical fields include: gravitational field, electromagnetic field and nuclear force field. back

Theoretical Ancient thinkers of China, Egypt, and Greece believed that correct conclusions and evidence could be reached through logical thinking. The theoretical method of studying physics consists of posing a problem and constructing a mathematical model for its solution. back

Conclusion Physics is one of the natural sciences. It originated during the time of the ancient Greeks in the 5th century BC. Since then, this science has developed and changed greatly. Physics is a science connected with many other important sciences. With the help of physics it is possible and necessary to understand the world, because... knowing the world is moving forward. Main menu

Physics is a very difficult, but at the same time fascinating subject. It all depends on how the teacher presents information to students. Even the most complex formulas and the laws will be easily remembered if you use presentations on physics, where physical phenomena, the reasons for their occurrence, laws and formulas, as well as biographies of famous scientists are described in a lively, accessible and interesting form. All presentations contain many illustrations and audio files, which can be easily supplemented and changed.

Physics presentations are made in PowerPoint; here you will find a large assortment of physics presentations that can be downloaded absolutely free. To do this, you need to go to the selected presentation and click on the “download” button. Before this, you can see each slide and view their description. You don’t have to download the files first and only then realize that this is not exactly what you need. If you have difficulty finding the topic you need, you can use the search for all presentations, enter keyword and we will select the most suitable jobs for you.

Here you will find presentations on physics for both elementary and high school students. Thanks to the clarity, colorfulness of the slides, correctly structured and divided into blocks of information, the audience will be able to more easily perceive the subject and better concentrate on the topic.