Chemistry, 20.09.2020 08:01 josephbrowne9p18dit

How can we determine a measurement that cannot be measured

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The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

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How can we determine a measurement that cannot be measured...