Covers the hearing range of humans and defines infrasound as sound below 20 Hz and ultrasound as sound above 20 kHz. It then turns to adverse physical workplace factors such as microclimate and atmospheric pressure, and their prevention, though the text is brief and mostly illustrated by pictures.
Topic 17 of 21 in the MU Sofia syllabus for Hygiene and Epidemiology (Dental Medicine, Year 3). The free AceMed note covers it in 2 sections, about 29 words (2 min of reading), with 31 flashcards.
In this note
Noise, ultrasound and infrasound in production, industrial vibrations – hygienic characteristics, biological effects, prevention.
Impact of adverse physical factors on the human body in the workplace (microclimate, atmospheric pressure, etc.). Prevention.
Noise, ultrasound and infrasound in production, industrial vibrations – hygienic characteristics, biological effects, prevention.
Humans can hear sounds in the frequency range of 20 Hz to 20 kHz.
Sounds below 20 Hz are called infrasound, and sounds above 20 kHz are called ultrasound.
Read the full note free
The whole note, all 2 sections, is free with an AceMed account, with its 31 flashcards. Premium adds flashcard recall, highlights and Ask AI.
