Assertion: newton | /r/CapableOf | make the mistake
Facets:
Source sentences:
text: It appears that Newton made the mistake of supposing that all prisms would give a spectrum of the same length; the objections of his opponents led him to measure carefully the lengths of spectra formed by prisms of different angles and different refractive indices, but he was not led thereby to the discovery of the different dispersive powers of different refractive substances.[citation needed]