C is experimentally found to be between 0.7 and 2.2.
This behaviour is controlled by an unknown constant that could not be found experimentally.
This reaction works by using two clear solutions (many variations) that change color after a time delay (the exact time can be found experimentally).
Both and are found experimentally and agree on results from both hypotheses.
This gives some insight into the reason why Zipf's law has been found experimentally to hold in such a wide variety of languages.
However it has been experimentally found that the intensity of the overtone band is very low compared to the fundamental band.
Because of this, contact conductance/resistance is usually found experimentally, by using a standard apparatus.
It is actually experimentally found and doesn't always agree exactly with what we expect.
So far, no elementary particle with spin 3/2 has been found experimentally.