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Estimation - interpolation

 There will be no students at school or the sky could be cloudy for the equinox day.


2 days before and after the date

 

 

2 days before and after the date

 

 

 

 

 

 

 

 

 

 

2 days before and after the date

 

 

 

3 days  after the date

 

 

 

 

3 days  before the date

 

As we could not make any measurement on march 20th, we experimented on 15th, 16th and 19th.

 

Then we we made a graphic interpolation to have an estimation of the result for 20th march.

Gnomon : 100 cm
Shadow : 97 cm
Angle : 44.13° = 44°10’

 

 

 March 2014

 

 

 

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