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E – 15, Other functions ( x, Unit conversions – CITIZEN SRP-285N User Manual

Page 16: Physical constants

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E – 15

File name : CBM_SR285,A_HDBSR285T19_English.doc

version : 2010/04/26

„ Other Functions ( x

–1

, ,

X

, x

2

, ^ )

z

The calculator also provides reciprocal ( [ x

–1

] ), square root

( [ √ ] ), universal root ( [

X

] ), square ( [ x

2

] ) and

exponentiation ( [ ^ ] ) functions. See Example 47~50.

„ Unit Conversions

z

The calculator has a built-in unit conversion feature that enables
you to convert numbers from metric to English units and vice
versa. See Example 51.

1. Enter the number you want to convert.
2. Press [ 2nd ] [ CONV ] to display the menu. There are 7

menus, covering distance, area, temperature, capacity,
weight, energy, and pressure.

3. Use the [ ] [ ] to scroll through the list of units until a

appropriate units menu is shown, then [

].

4. Pressing

[ ] or [ ] can convert the number to another

unit.

„ Physical Constants

z

You can use a number of physical constants in your calculations.
See table below :
Symbol Meaning

Value

c

Speed of light in vacuum

299792458 m / s

g

Acceleration of gravity

9.80665 m.s

–2

G Gravitational

constant

6.6725985 x 10

–11

N.m

2

kg

–2

Vm

molar volume of ideal gas

0.0224141 m

3

mol

–1

NA

Avagadro's number

6.022136736 x 10

23

mol

–1

e

Elementary charge

1.6021773349 x 10

–19

C

me

Electron mass

9.109389754 x 10

–31

kg

mp

Proton mass

1.672623110 x 10

–27

kg

h

Plank's constant

6.626075540 x 10

–34

J.s

k

Boltzmann's constant

1.38065812 x 10

–23

J.K

–1

R

Gas constant

8.3145107 J / mol

z

k

F

Faraday constant

96485.30929 C / mol

mn

Neutron constant

1.67492861 x 10

–27

kg

µ

Atomic mass constant

1.66054021 x 10

–27

kg

ε

0

Dielectric permittivity

8.854187818 x 10

–12

F/m

µ

0

Magnetic permittivity

1.256637061 x 10

–6

H / m

φ

0

Flux quantum

2.0678346161 x 10

–15

Vs

a

0

Bohr radius

5.2917724924 x 10

–11

m

µB

Bohr magneton

9.274015431 x 10

–24

A

z

m

2

µN

Neutron magnetic moment

5.050786617 x 10

–27

J / T