3 семестр / Glossary

Term

Pronunciation

Definition

Example

Russian

Unit 13

propagation (n, u)

ˌprɒpəˈɡeɪʃn

any of the ways in which waves travel

propagation of waves

распространение

spring (n, c)

sprɪŋ

a twisted piece of wire that can be pushed, pressed or pulled but which always returns to its original shape or position afterwards

The springs in the sofa have gone

пружина

stretch (v)

stretʃ

to make something longer, wider or looser, for example by pulling it; to become longer, etc. in this way

spring is stretched

тянуть

compress (v)

kəmˈpres

to press things together or press something into a smaller space; to be pressed in this way

compressing a spring

сжимать

stiffness (n, u)

ˈstɪfnəs

the fact of being hard and difficult to bend or move

stiffness of the spring

жесткость

pendulum (n,  c)

ˈpendʒələm

a body suspended from a fixed point so as to swing freely to and fro under the action of gravity and commonly used to regulate movements

simple pendulum

маятник

overlap (v)

ˌəʊvəˈlæp

to extend over or past and cover a part of

pulses from the loops overlap in phase

перекрывать

Term

Pronunciation

Definition

Example

Russian

Unit 14

longitudinal (adj)

ˌlɒŋɡɪˈtjuːdənl

placed or running lengthwise

longditional wave

продольный

rarefaction (n, u)

ˌreərɪˈfækʃn

a decrease in the density of air or a gas

rarefaction at higher levels in the atmosphere

разрежение

audible (adj)

ˈɔːdəbl

that can be heard clearly

audible range for humans

слышимый

ultrasonic (adj)

ˌʌltrəˈsɒnɪk

having a frequency above the human ear's audibility

ultrasonic waves

ультразвуковой

intensity (n, u)

ɪnˈtensəti

the magnitude of a quantity (such as force or energy) per unit (as of area, charge, mass, or time)

intensity level

интенсивность

the Doppler effect

ðə ˈdɒplər ɪfekt

the way that waves change in frequency depending on the direction that the source is moving in relative to the person who is observing

The reason for the Doppler effect is that when the source of the waves is moving towards the observer, each successive wave crest is emitted from a position closer to the observer than the crest of the previous wave

эффект Доплера

resonance (n, u)

ˈrezənəns

phenomenon of increased amplitude that occurs when the frequency of a periodically applied force is equal or close to a natural frequency of the system on which it acts

Resonance phenomena occur with all types of vibrations or waves.

резонанс

№

term

pronunciation

definition

example

Russian

1

add (v)

æd

to put something together with something else so as to increase the size, number, amount, etc.

if you add 16 to 4 you get 20

прибавить

2

subtract (v)

səbˈtrækt

to take a number or an amount away from another number or amount

6 subtracted from 9 is 3

вычесть

3

multiply (v)

ˈmʌltɪplaɪ

to add a number to itself a particular number of times

Multiply the length by the width.

умножать

4

divide (v)

dɪˈvaɪd

to separate into parts; to make something separate into parts

divide up After lunch we divided up for group discussions.

делить

5

fraction (n, c)

ˈfrækʃn

a small part or amount of something

Only a small fraction of a bank's total deposits will be withdrawn at any one time.

дробная часть

6

angle (n, c)

ˈæŋɡl

the space between two lines or surfaces that join, measured in degrees

the rocket’s angle of descent

угол

7

equal (v)

ˈiːkwəl

the same in size, quantity, value, etc. as something else

There is an equal number of boys and girls in the class.

равный

8

ratio (n,c)

ˈreɪʃiəʊ

the relationship between two groups of people or things that is represented by two numbers showing how much larger one group is than the other

ratio of A to B What is the ratio of men to women in the department?

соотношение