Do you know your formulae?
Do you know your formulae?
28 February 2011
07:14
Unit 3 Formulae
Tell the person next to you…
· All of the formulae from this unit
o eg. "The formula that links v, f and λ is…"
· All of the quantities from this unit
o eg. "λ = Wavelength"
· All of the units from this unit
o eg. "The unit of wavelength is metres"
Answers
Formulae
· v = f x λ
· f = 1/T
· n = sin i / sin r
· sin c = 1/n
· v = d / t
Quantities and Units
· v = wave speed (m/s)
· f = frequency (Hertz, Hz)
· λ = wavelength (m)
· T = period (s)
· n = refractive index (no units)
· i = angle of incidence (o)
· r = angle of refraction (o)
· c = critical angle (o)
· d = distance (m)
· t = time (s)