Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Jodrell Bank Observatory' has mentioned 'Frequency' in the following places:
Occurrence Sentence Text Source
[15] It discovered radio noise from the Great Nebula in Andromedaxe2x80x94the first definite detection of an extragalactic radio sourcexe2x80x94and the remains of Tycho's Supernova in the radio frequency; at the time it had not been discovered by optical astronomy.
[39] At a wavelength of 6xc2xa0cm (5xc2xa0GHz frequency), MERLIN has a resolution of 50xc2xa0milliarcseconds which is comparable to that of the HST at optical wavelengths.
The adaptation and development of radar and radio frequency reflectivity to develop radically new equipment, such as the Transit Telescope and Lovell Telescope, were a key part in the development of entirely new fields of scientific research and led to a dramatic change in the understanding of the Universe.