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The Secret Diary of Mrs A. - List of Idioms

·         X-ray – a photograph of a part of the body to see if anything is wrong taken with the use of a beam of electromagnetic radiation of very short wavelength

·         the law of gravity – the force that causes something to fall or to be attracted to another planet; the law states that every object attracts every other object with a force directly proportional to the product of the masses of the objects and inversely as the square of the distance between them

·         inclined plane – a completely flat surface sloping or leaning in particular direction

·         pendulum – a rod with a weight at the bottom that swings regularly from side to side to control the working of a clock

·         precious metals – rare and valuable metals such as gold or silver

·         connected vessels – containers, joined together, used for holding liquids

·         mercury / quicksilver – a heavy silver white metal that is liquid at ordinary temperatures and is used in thermometers

·         electric circuit – the complete circle that an electric current travels

·         electric current – a flow of electricity; the rate of flow of electric charge

·         Volt – a unit of electromotive force for measuring the force of an electric current

·         battery – a number of electric cells joined together to give a bigger force

·         positive pole – having the type of electrical charge that is carried by protons

·         negative pole – having the type of electrical charge that is carried by electrons

·         electric shock – a sudden shock to your body caused by electricity

·         volume – the amount of space that an object or substance fills, expressed in cubic meters, etc.

·         Archimedes Principle – the principle of an equilibrium between a floating body and the hydrostatic pressure of the liquid in which it floats. The principle states that when a body is partially or totally immersed in a liquid, its apparent loss of weight is equal to the weight of liquid displaced: i.e. the body experiences an upthrust equal to the weight of fluid displaced

·         colour – the sensation when the eye receives certain wavelengths of light

·         prism – a transparent block of glass of triangular cross section that breaks up white light into different colours

·         refraction – the sudden change of direction of light when it passes from one transparent substance into another, e.g. from air into water or glass

·         inflammable materials – substances that catch fire easily

·         rust – become covered with the reddish-brown substance that forms on iron and steel when they get wet

·         magnetic field – an area around an object that has magnetic power, e.g. a magnet

·         like poles – a pole is a point at the end of the magnet, like poles are either two positive poles or two negative poles (a negative pole is the end of a magnet which turns naturally towards the south)

·         unlike poles – opposite poles, i. e. a positive plus a negative pole

·         the atmosphere – (1) the mixture of gases that surrounds the Earth; (2) the feeling that an event or place gives you

·         highly charged – (1) such that makes you feel angry, nervous or excited; (2) with stored electricity

·         discharge – (1) the act of sending out (gas, liquid, smoke, etc); (2) electricity that is sent out (e.g. in a storm)

·         energy – the capacity of a body or substance for doing work

·         emitting – sending out heat, light, gas, etc.

·         thunder – (1) the loud noise which you hear during a storm usually after a flash of lightning; (2) shout loudly and angrily

·         optical illusion – a picture or image that tricks your eyes and makes you see something that is not usually there

·         diffraction – an important property of light and other waves when a wave in motion is spread into secondary waves by objects in its path

·         interference – when waves from different sources superimpose

·         nuclear reactor – an apparatus in which a nuclear fuel undergoes fission (when the nucleus of an atom splits into two parts) under controlled conditions

·         magnetism – (1) the physical force by which a magnet attracts metal; (2) a quality that makes people attracted

·         crystal – a small regular shaped piece of a substance, formed naturally when this substance becomes solid; a solid composed of a group of atoms or molecules which is repeated in space to form a very regular structure

·         lubricant – a substance that is put on surfaces in order to make them move smoothly and easily

·         blown fuse – a short thin piece of wire that is inside electrical equipment which has melted because too much electricity was running through it

·         theory of relativity – Einstein’s Special Theory of Relativity maintains that the velocity of light is constant and that the observation of time, size and mass in a system depends in its velocity

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