Acoustic microscopy acoustic microscope (CSAM), and C-mode scanning acoustic microscope (C-SAM). More recently acoustic microscopes based around picosecond ultrasonics systems have demonstrated acoustic imaging in cells using sub-optical wavelengths working with ultrasonic frequencies into the multi-GHz. Since the vast majority of acoustic microscopes in use today are C-SAM type instruments, this discussion will be limited to these instruments. Ultrasound is broadly defined as any sound having a frequency above 20 kHz, which is approximately the highest frequency that can be detected by the human ear. However, the acoustic microscopes emit ultrasound ranging from 5 MHz to beyond 400 MHz so that micrometre
Frequencies (film) "The Austin Chronicle" wrote, "What raises Fisher's script to the upper echelons of the current wave of intellectually challenging indie sci-fi ... is that it truly weaves its concept into its nature." Kurt Halfyard of Twitch Film wrote that it "is chock-a-block full of knowledge, destiny and imagination, but suffers a bit from a lack of heart and soul." Frequencies (film) Frequencies, also known as OXV: The Manual, is a 2013 independent British science fiction romance film written and directed by Darren Paul Fisher. The film stars Daniel Fraser, Eleanor Wyld, and Owen Pugh. The film takes place in a