HSCI 20200 Lecture Notes - Lecture 15: Ultraviolet, Sunscreen, Electric Current
18 Oct 2016
School
Department
Course
Professor
Document Summary
Essentials of environmental, occupational, and radiological health sciences (hsci 202) An environmental agent that acts by transmitting force/energy to humans. Examples: sound, heat, electric and magnetic fields, rf/microwave radiation. Found near radio, communication, and radar towers. High levels can be fatal: ultraviolet radiation. Causes skin cancer, skin aging, and cataracts. Avoid tanning beds and going out for long hours during the day: visible light/lasers, electric current, vibration, trauma, ionizing radiation. 12. 5% of children (ages 6-19) have suffered from permanent damage to their hearing. 9 out of 10 teens admit to participating in activities they know may damage their hearing. Add to high blood pressure and stress. Heat exhaustion heat stroke: heat deaths in the us = 150-2000 (per year) Dba a weighted average level for noise of combined frequencies. Detected by hair cells in the cochlea (inner ear) Non-auditory effects of noise: climate change global warming. 1995 chicago heat wave caused 700 deaths. Over 15,000 excess deaths: cell phones.
