Magnetism And Waves

Front 1

Force generated in matter by the motions of electrons within its atoms

Back 1

magnetism

Front 2

The region in space that is penetrated by the imaginary lines of magnetic force

Back 2

Magnetic Field

Front 3

Magnetized elements

Back 3

Magnets

Front 4

Region where magnetic fields are strongest

Back 4

Magnetic Poles

Front 5

In a ________, magnetic moments are equal magnitude arrange themselves in parallel to each other

Back 5

Ferromagnet

Front 6

The magnetic moments are unequal in magnitude and order in antiparallel arrangements

Back 6

Ferrimagnet

Front 7

Temperature where antiferromagnetism occurs

Back 7

Neel temperature

Front 8

When the moments are equal jn magnitude and ordering occurs at temperature called Neel temperature in an antiparallel array to give no net to magnetization, the phenomenon is referred to as _________

Back 8

Antiferromagnetism

Front 9

Is a weak form of magnetism observed in a substance which display a positive response to an applied magnetic field

Back 9

Paramagnetism

Front 10

Associated with materials that have a negative magnetic susceptibility/occurs in nonmagnetic substances like graphite, copper, etc

Back 10

Diamagnetism

Front 11

Defined as the total number of line of force per unit area

Back 11

Magnetic Flux density

Front 12

Magnetic field or flux density is measured in metric units of _______ and SI units of ____$$

Back 12

Gauss |||| Tesla

Front 13

______ and _______ are used to measure the magnitude of magnetic fields

Back 13

Gaussmeter and magnetometer

Front 14

Are extremely sensitive magnetic field detectors

Back 14

Magnetometers

Front 15

The most sensitive magnetometer in modern physics laboratory utilizes a magnetic sensing element called ______

Back 15

SQUID

Front 16

SQUID stands for?

Back 16

Superconducting Quantum Interference Device

Front 17

SQUID consists of an extremely thin electrically resistive junction called ________ between two superconductors

Back 17

Josephson Junction

Front 18

Materials that undergo transition at low temperatures to a state of zero electrical resistance

Back 18

Superconductors

Front 19

A variation of SQUID magnetometer is the __________ which measures differences in magnetic fields at different positions

Back 19

SQUID gradiometer

Front 20

Are utilized as key components of transformers in power supplies that convert electrical energy

Back 20

Electromagnets

Front 21

This rule states that if you put the thumb of your right hand in the direction of the current, the magnetic field will wrap around the wire same way your fingers will

Back 21

Right Hand rule

Front 22

Force that is perpendicular to both the magnetic field of the magnet and the current of the wire

Back 22

Lorentz Force

Front 23

A machine which converts electrical energy to mechanical energy or physical movement

Back 23

Electric motors

Front 24

Is when the movement is used to create electricity

Back 24

Induction

Front 25

Refers to the production of current in a wire when there is relative motion between the wire and a magnetic field

Back 25

Electromagnetic induction

Front 26

This feature that the magnetic effects of the induced current are such as to oppose the external change is known as ________

Back 26

Lenz's Law

Front 27

In _______, an alternating current in one coil of wires creates a changing magnetic field

Back 27

Transformers

Front 28

A disturbance in a medium that carries energy without a net movement of particles

Back 28

Wave

Front 29

The material for which a wave travels through

Back 29

Medium

Front 30

Waves that require a medium to travel through

Back 30

Mechanical waves

Front 31

A wave that vibrates the medium at right angles or perpendicular to the direction in which the wave travels

Back 31

Transverse wave

Front 32

A high point on a trasnverse wave

Back 32

Crest

Front 33

A low point on a transverse wave

Back 33

Trough

Front 34

Vibrates the medium in the same direction as the waves travels

Back 34

Longitudinal wave

Front 35

An area where the coils are close together

Back 35

Compression

Front 36

Area where the coils are spread out

Back 36

Rarefaction

Front 37

Is a combination of transverse and longitudinal waves//travels along a surface that separates two medium

Back 37

Surface waves

Front 38

Travels at the surface between air and water//known as Rayleigh wave

Back 38

Ocean wave

Front 39

Maximum distance the medium vibrates from the rest position

Back 39

Amplitude

Front 40

The distance between two corresponding parts of a wave/one period to another

Back 40

Wavelength

Front 41

Is the number of waves that pass a given point in a certain amount of time

Back 41

Frequency

Front 42

Is how far the wave travels in a given amount of time

Back 42

Speed