t

s, min, tund, a

m

kg, g, t, ts

s

m, mm, cm, dm, km

S

m², cm², dm², mm²

t

°K,°C

I

A, mA, kA

U

V, mV, kV

U=I·R

R

W, kW, MW

A

J, kJ

A=P·t
A=I·U·t

P

W, kW, MW

P=I·U

Q

J, kJ

Q=I² ·R·t

r

,

c

F

N

F=m·g

Q

J, kJ, cal, kcal

Q=c·m·(t₁-t₂)
Q=l·m

l

A

J, kJ

A=F·s

f

m, mm, cm, dm

D

dptr (dioptria)

h

%

r

Wm, Wmm²/m