High-temperature superconductivity?

Published April 01, 2018

High-temperature superconductivity?

A rare phenomenon has such an amazing history as superconductivity - the discovery made by Camerling-Onnes in 1911. But all superconductors passed into the superconducting state at very low temperatures - near absolute zero. Is a remarkable phenomenon - superconductivity - always a low-temperature phenomenon? It turns out that back in 1964...

Charge of quarks

Published April 01, 2018

Charge of quarks

What is the charge of an electron? The number -1,6*10-19 was first obtained by Robert Millikan, who measured the rate of ascent of contaminated oil droplets in the electrostatic field. The minimum charge that a drop could have had was taken as a single one. In the middle, for example, in the 1960s, the number of elementary particles was measured by hundreds...

Eye and image

Published April 01, 2018

Eye and image

Having studied the structure of the eye in biology lessons, we can say that from the physical point of view, the eye looks most like a camera. The lens plays the role of an objective, the pupil is a diaphragm, and the retina, which forms an inverted reduced image of the subject under consideration, is a liquid crystal matrix...

Electrons and plasticity of metals

Published April 01, 2018

Electrons and plasticity of metals

It turns out that electrons affect the mechanical properties of metals. If you pass through an electric current, you can change its strength and ductility. In addition, the transformation of the alloy into a superconducting state caused also a change in its mechanical properties. And superconductivity is closely connected with the motion of free electrons...

Rayleigh waves

Published April 01, 2018

Rayleigh waves

In 1885, the English physicist Rayleigh conducted research on acoustic surface waves that propagate along the surface of the globe, not leaving in its depths. Rayleigh waves, as they were later called, played a huge role in the birth of a new science - acoustoelectronics. But first the scientists simply forgot about them. Even in the second half of the 20th century. it was not at all clear whether it was worthwhile to deal with them again...

MHD generator with own hands

Published April 01, 2018

MHD generator with own hands

Obtaining electrical energy is very important for modern mankind. For this, new methods of obtaining electric energy in magnetohydrodynamic generators (MHD) are being searched for. How to build an MHD generator with your own hands, too, is of considerable interest. The MHD generator works as follows. When fuel is combusted, the gas in the working...

Page ‹‹ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 ››

Tools