Infra- (Infra-)

Infra- (Infra-) is a prefix denoting a value greater than any other value.

The prefix "infra-" comes from the Latin word "infra", which means "below". In scientific terminology, "infra" is used to refer to wavelength ranges beyond visible light.

For example:

1. Infrared rays are electromagnetic waves with a wavelength longer than visible red light. Used in thermal imagers.

2. Infrasound is sound waves with a frequency below 20 Hz, inaudible to humans.

3. Infraviolet radiation is electromagnetic waves with wavelengths less than 100 nm, beyond the visible color violet.

Thus, the prefix “infra-” indicates that this range lies outside of any other range, having larger values ​​of one or another parameter.

Infra is a Latin word that translates as “below”, “under”. In Russian, this word is used to mean something low, small, not very important. In physics and mathematics, this word began to be used to denote a quantity that is smaller than some other quantity.

The prefix “infra-” is used to denote the infrared range of electromagnetic waves. Infrared light is light that is below the visible spectrum. It has a wavelength of 740 to 1400 nanometers. This light is not perceived by the human eye, but it can be seen using special instruments.

Infrared light is used in various fields of science and technology. For example, it is used to measure the temperature of objects, to detect motion, to create images in the infrared range. Infrared light can also be used to heat rooms and illuminate streets at night.

In mathematics, the prefix “infra-” is also used to denote a quantity that is greater than some other quantity but less than infinity. For example, in mathematics a function called “sine” is often used. This function has a value from -1 to 1. But if we consider the “sine” function in the infrared range, that is, in the range from 0 to π/2, then we will get another function that will be greater than zero and less than one.

Infra-, which is the prefix of this word, originally comes from the Latin (infirma, infirmus) and is translated as “weak, small, feeble, insignificant.” Infracrystal "opaque, dark, opaque crystal."

Infrared - the part of the spectrum that follows the visible and before the ultraviolet, also has several meanings. Infrared radiation is light radiation that is not perceived by the human eye. It can be very useful for creating thermal imaging equipment. In military affairs during the Second World War, there was a fairly massive industry associated with the production of infrared reconnaissance, enemy detection, and star navigation. Much attention was paid to the operation of thermal imagers