Measurement Units

Front 1

Ampere

Back 1

Electric Current

Hint 1

The ampere is a measure of the amount of electric charge in motion per unit time ― that is, electric current.

But the quantity of electric charge by itself, whether in motion or not, is expressed by another SI unit, the coulomb (C).

Front 2

Ampere - Hour

Back 2

Quantity of Electricity

Hint 2

Ampere hour -- sometimes abbreviated as Ah or amp hour -- is the amount of energy charge in a battery that enables 1 ampere of current to flow for one hour.

Front 3

Angstrom

Back 3

Displacement / Wave length of light

Hint 3

It is sometimes used to express wavelength s of visible light, ultraviolet (UV) light, X rays, and gamma rays.

Front 4

BTU

Back 4

Energy

Hint 4

A British thermal unit (Btu) is a measure of the heat content of fuels or energy sources. It is the quantity of heat required to raise the temperature of one pound of liquid water by 1 degree Fahrenheit at the temperature that water has its greatest density (approximately 39 degrees Fahrenheit).

One British thermal unit (Btu) is approximately equal to the energy released by burning a match.

Front 5

Barrel

Back 5

Crude Petrolium

Front 6

Bell

Back 6

Intensity of sound

Front 7

Bequerrel

Back 7

Radioactivity

Front 8

Calorie

Back 8

Quantity of Heat

Front 9

Centigrade

Back 9

Temperature

Front 10

Celcius

Back 10

Temprature

Front 11

Centimeter

Back 11

Length

Front 12

Columb

Back 12

Electric Charge

Front 13

Decible

Back 13

Intensity of sound

Front 14

Dioptre

Back 14

Power of a lens

Hint 14

Diopter, in optics, unit of magnifying power of a lens or lens system. Because the power of a lens is proportional to unity (one) divided by the focal length (see lens), the power of a lens in diopters is numerically equal to 1 m divided by the focal length in metres.

Front 15

Dyne

Back 15

Force

Front 16

Electron volt

Back 16

Energy

Hint 16

Electron volt, unit of energy commonly used in atomic and nuclear physics, equal to the energy gained by an electron (a charged particle carrying unit electronic charge) when the electrical potential at the electron increases by one volt.

Front 17

Erg

Back 17

Work

Front 18

Erg

Back 18

Work

Hint 18

Erg, unit of energy or work in the centimetre-gram-second system of physical units used in physics; to lift a pound weight one foot requires 1.356 × 107 ergs. It equals the work done by a force of one dyne acting through a distance of one centimetre and is equal to 10-7 joule, the standard unit of work or energy.

Front 19

Faraday

Back 19

Electric Charge

Front 20

Gram

Back 20

Mass

Front 21

Gram weight

Back 21

Gravitational Force

Hint 21

A gram- force, is a gravitational unit of force.

That is one gram force is defined as the force exerted by one gram of mass in the standard value of gravitational field.

The gram-force is equal to the product of mass of one gram by the standard acceleration due to gravity.

Front 22

Henry

Back 22

Inductance

Hint 22

The henry is a large unit of inductance. In audio-frequency ( AF ) and radio-frequency ( RF ) applications.

Front 23

Horse Power

Back 23

Power

Front 24

Joule

Back 24

Work

Front 25

Kilo watt

Back 25

Electric Power

Hint 25

Watts are the SI unit of power.

Kilowatts are equivalent to 1,000 Watts and are the most frequently used unit of electrical power.

Front 26

Kilowatt - hour

Back 26

Electric Power

Hint 26

The kilowatt-hour (symbolized kWh) is a unit of energy equivalent to one kilowatt (1 kW) of power expended for one hour (1 h) of time. The kilowatt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications.

Front 27

Knot

Back 27

Speed

Front 28

Light Year

Back 28

Distance

Front 29

Litre

Back 29

Volume

Front 30

Lumen

Back 30

Luminus Flux

Hint 30

One lumen is the amount of light emitted in a solid angle of 1 sr, from a source that radiates to an equal extent in all directions, and whose intensity is 1 cd.

Front 31

Lux

Back 31

Intensity of illumination / Illuminance

Hint 31

The lux is a small unit. An alternative unit is the watt per meter squared

Front 32

Maxwell

Back 32

Magnetic Flux

Hint 32

The name of the unit honors James Clerk Maxwell, who formulated a unified theory of electromagnetism.

Front 33

Meter

Back 33

Distance

Front 34

Newton

Back 34

Work

Front 35

Ohm

Back 35

Electric Resistance

Front 36

Pascal

Back 36

Pressure

Front 37

Second

Back 37

Time

Front 38

Siemens

Back 38

Electric conductence

Hint 38

Siemens AG is a German company engaged in electrical engineering and electronics.

Front 39

Tesla

Back 39

Magnetic Flux Density

Hint 39

The tesla was named for Nikola Tesla , the Serbian-American scientist who contributed greatly toward the development of modern-day electrical power systems.

Front 40

Volt

Back 40

Electric Potential Difference

Hint 40

Electric potential difference is also known as voltage.

The size of 1 volt is officially defined as the potential difference between two points of a wire carrying a current of 1 ampere when the power dissipated in the wire is 1 watt.

Front 41

Weber

Back 41

Magnetic Flux

Hint 41

Weber, unit of magnetic flux in the International System of Units (SI),

defined as the amount of flux that, linking an electrical circuit of one turn (one loop of wire), produces in it an electromotive force of one volt as the flux is reduced to zero at a uniform rate in one second.

It was named in honour of the 19th-century German physicist Wilhelm Eduard Weber and equals 108 maxwells, the unit used in the centimetre–gram–second system.

Front 42

X - unit

Back 42

X - Ray wave length

Front 43

Bar

Back 43

Energy

Front 44

Parsec

Back 44

Unit of distance equal to 3.26 light years