"concept" newsreels and historical clips

... straight lines that belong to the planes of the parallelepiped do not intersect, while any two of them lie in the same plane.

The concept of parallelism of straight lines.

The concept of crossing lines.

For example, the contact wires of a trolleybus and their suspension.

The rule of perpendicular lines.

A sign ...

... through this point, all other straight lines passing through this point and intersecting the plane are inclined.

The concept of oblique projection.

The concept of an inclined angle.

The concept of a straight parallel plane.

Examples.

The relative position of the planes.

The planes of the opposite walls in ...

... in the room, the walls of the airlock do not intersect.

Examples of parallel planes.

Examples of intersecting planes.

The concept of half-planes.

Dihedral and linear angles.

Examples.

Three-dimensional geometric shapes.

The concept of a straight prism.

The concept of a parallelepiped.

Examples of a parallelepiped in the life around us.

The edges of the prism.

Characteristics of the lateral edges of a straight prism.

Characteristics of a straight prism.

The concept of the lateral surface of a ...

... prism.

Calculation of the total surface of a straight prism.

Calculation of the volume of a straight prism.

The concept of a pyramid.

Examples of the pyramid in the life around us.

The concept of the vertex, base, side edges of the pyramid and height.

Examples of the use of the pyramid in architecture ...

The concept of a regular polygon.

The concept of a proper prism.

The concept of a right and wrong pyramid.

The area of the side surfaces of the regular prism and pyramid.

Examples of objects in the shape of a cylinder.

The concept of a cylinder and characteristics.

Examples.

The surface area of the cylinder ...

... cylinder.

The volume of the cylinder.

The concept of a cone and its characteristics.

Examples of using the cone shape.

The surface area of the cone.

The volume of the cone.

... explaining the concept of linearly polarized light.

The formula of the instantaneous value of the electric field strength of the wave.

The formula of the instantaneous value of the magnetic field strength of the wave.

A cartoon explaining the concept of a harmonic light wave.

The concept of right elliptical ...

... elliptical polarization.

The concept of circular polarization.

A huge number of source atoms take part in the formation of light.

The emitting atom is considered as an oscillating dipole oscillator.

Each of them emits a zug of waves of linearly polarized light during one act of emission.

Many such waves ...

... waves with different initial phases and different polarization give natural light.

A cartoon explaining the concept of natural light and partially polarized.

The formula of the degree of polarization.

Experience in reflecting natural light with a dielectric.

The refractive index of the dielectric.

Malus' ...

The studio of radio station "Russian Radio".

Director of the program tells about the concept of radio.

... of an attempt on the life of Vladimir Putin.

Discussion of the new National Security Concept.

Characteristics of relations with NATO.

The link between the increase in the defense order and the National Security Concept, military doctrine and the general policy of the state.

Internal and external threats ...

Inkom.

Office.

Operate banking specialists (many shots).

Study.

Vladimir P. Vonatkov, general manager-coordinator

personnel management - the concept of consolidation of staff

and work with the staff (synchronously).

... the program, Professor Georgy Managadze, proposed a new concept of the possibility of the emergence of primary forms of living matter in the processes accompanying the ultra-high-speed impact of a meteorite on the surface of the planet.

The concept of the origin of life on our planet is based on the results ...

The drawing is the refraction of light when it hits the surface of water.

The concept of a transverse wave.

Cartoon explaining the law of linear polarization of an electromagnetic wave.

A cartoon explaining the fluctuations of bound and free charges.

Oscillations of bound charges can be represented as ...

... orbits of electrons relative to the nuclei.

Free electrons oscillate relative to their average position.

These charges create a secondary field.

The concept of a common field in the environment.

The formula of the phase velocity of the resulting field.

Propagation of plane waves in a dielectric.

Losses ...

... medium where there are free charges.

This leads to wave attenuation and phase shift.

Formulas of conduction current and displacement current.

The concepts of conductor, dielectric and semiconductor.

The formula of the characteristic resistance of the wave.

Formation of reflected and refracted waves when ...

... crumbling.

Metallurgical production.

The nail is destroyed in an aggressive environment.

The destroyed nail.

Samples of parts destroyed by corrosion.

The concept of corrosion.

Heating of parts in the furnace.

Scale on metal.

Scale on metal is an example of mechanical corrosion.

Rolling mill.

Types of corrosion ...

Consequences of covertly occurring corrosion processes.

The concept of chemical corrosion.

Cartoon explaining the phenomenon of gas corrosion.

With such corrosion, an oxide film is formed.

Cartoon explaining the basis of gas corrosion.

The concept of electrochemical corrosion.

Experience with galvanic cells ...