толқын

A wooden wall built across a beach from land to sea. Designed in the 19th century to stop the removal of sand from beaches becoming popular with new tourists, they became ...

толқын ұзындығы

Occhiali; Optometria; Lenti a contatto; Chirurgia oftalmologica

The distance between the top of one wave and the top of the next wave. The length of one complete wave of the argon fluoride excimer laser is 193 nm. This wavelength is in the far ...

толқын фронты

Occhiali; Optometria; Lenti a contatto; Chirurgia oftalmologica

A technology used in optics that is able to determine and measure high order aberrations. These aberrations directly relate to an individual's quality of vision. Conventional eye ...

толқын ұзындығы

Chimica; Chimica (generale)

On a periodic curve, the length between two consecutive troughs (low points) or peaks (high points).

олефин

Chimica; Chimica (generale)

A compound that consists of only carbon and hydrogen, that contains at least one carbon-carbon double bond. Alkene names end with -ene. Examples are ethylene (CH2=CH2); 1-propene ...

майшыт

Chimica; Chimica (generale)

A colloid formed from tiny liquid droplets suspended in another, immiscible liquid. Milk is an example of an emulsion.

нейтрино

Chimica; Chimica (generale)

An elementary particle produced by certain nuclear decay processes. Neutrinos have no charge and extremely small masses compared to other subatomic particles.

қос жылу

Chimica; Chimica (generale)

A device that senses temperature changes by using a pair of joined wires made of dissimilar metals that produces a voltage that changes with temperature.