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# the speed of light and it relationship to frequency and wavelength the equation c = f?.

c=λ*f

Measuring the Speed of Light
With Chocolate  when microwaving.

Distance between the hot spots ______________________________cm
Wavelength _____________________________________________cm
Wavelength _____________________________________________m
Frequency of the microwave ________________________________m
EQUATION _____________________________________________
Your calculated speed of light _______________________________m/s

### 1 Answer by Expert Tutors

5.0 5.0 (2 lesson ratings) (2)
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Treena,

You need to supply the spacing of the hot spots and the frequency of the microwave oven. This will vary from oven to oven.

Steve

Distance between the hotspots: 4 cm
Wavelength: 25 cm
Wavelength: 1.0 m
Frequency of the microwave: 300 MHz
EQUATION _____________________________________________
Your calculated speed of light _______________________________m/s

Treena,

The distance between hotspots is the wavelength. What role do the other two wavelengths serve?

c = ??, where ? is the frequency and ? is the wavelength.

The other two wavelengths serve to teach and get the student to realize:

1) the distance between hotspots IS the wavelength.
so distance = X  then they have to write the same number
wavelength = X
2) that the wavelength for the equation must be in meters
so converting
wavelength X in cm
wavelength Y in meters

Often teachers will make a worksheet where the student writes the same thing
in different ways or different laces to get them to realize some king of relationship or fact.
OOPs   "Places"  Kind"  sorry.  (we need an edit function.)