The effects of hot-wire spatial resolution on measurements in wall-bounded turbulence.

Reassessment of new and pre-existing data reveal that recorded scatter in the hot-wire measured near-wall peak in viscous- scaled streamwise turbulence intensity is due in large part to the simultaneous competing effects of Reynolds number and viscous scaled wire-length $l^{+}$. These competing factors can explain much of the disparity in existing literature, in particular explaining how previous studies have incorrectly concluded that the inner-scaled near-wall peak is independent of $Re$. We also investigate the appearance of the, so-called, `outer-peak' in the broadband streamwise intensity, found by some researchers to occur within the log-region of high Reynolds number boundary layers. We show that this `outer-peak' is most likely a symptom of attenuation of small-scales due to large $l^{+}$. Fully mapped energy spectra, obtained with a range of $l^{+}$, are presented to demonstrate this phenomena.