ADMS 3400 Lecture Notes - Lecture 3: Ultraviolet, Electromagnetic Radiation, Conjunctivitis

• School: York University
• Department: Administrative Studies
• Course: ADMS 3400
• Professor: Gary Blake

Document Summary

Ionizing: any form of electromagnetic energy capable of producing ions through interaction with matter. Non-ionizing: electromagnetic radiation that does not have energy great enough to ionize matter. Types include: ultraviolet radiation, visible light radiation. Infrared radiation: microwave radiation, radio waves, all of these come from the sun. Ultraviolet radiation (florescent tubes: conjunctivitis, keratitis, reddening of the skin, skin cancer . Infrared radiation (hot metals, fluorescents: corneal and retinal burns, overheating of the iris, cataracts, skin burns. Microwave radiation (microwave ovens, radar: deep tissue damage, surface skin rash, cataracts, pacemaker interference. Radio (cid:449)a(cid:448)es (cid:894)po(cid:449)er lines, vdt"s(cid:895: controversial area - a number of conditions, including tumours, however, none have been conclusively proven. Radiation: energy in transit, either as particles or electromagnetic waves. Radioactivity: the characteristic of various materials to emit ionizing radiation. Ionization: the removal of electrons from an atom. The essential characteristic of high energy radiations when interacting with matter. Alpha penetrates the least (up to paper)